Merge

drivers/scsi/dc395x.c

@@ -5862,14 +5862,7 @@ static void __devexit dc395x_remove_one(struct pci_dev *dev)
 	struct Scsi_Host *host = pci_get_drvdata(dev);
 
 	dprintkdbg(DBG_0, "Removing instance\n");
-	if (!host) {
-		dprintkl(KERN_ERR, "no host allocated\n");
-		return;
-	}
-	if (scsi_remove_host(host)) {
-		dprintkl(KERN_ERR, "scsi_remove_host failed\n");
-		return;
-	}
+	scsi_remove_host(host);
 	host_release(host);
 	scsi_host_put(host);
 	pci_set_drvdata(dev, NULL);

drivers/scsi/hosts.c

@@ -40,6 +40,16 @@
 static int scsi_host_next_hn;		/* host_no for next new host */
 
 
+static void scsi_host_cls_release(struct class_device *class_dev)
+{
+	put_device(&class_to_shost(class_dev)->shost_gendev);
+}
+
+static struct class shost_class = {
+	.name		= "scsi_host",
+	.release	= scsi_host_cls_release,
+};
+
 /**
  * scsi_host_cancel - cancel outstanding IO to this host
  * @shost:	pointer to struct Scsi_Host
@@ -64,10 +74,18 @@ void scsi_host_cancel(struct Scsi_Host *shost, int recovery)
  **/
 void scsi_remove_host(struct Scsi_Host *shost)
 {
+	unsigned long flags;
+
 	scsi_host_cancel(shost, 0);
 	scsi_proc_host_rm(shost);
 	scsi_forget_host(shost);
-	scsi_sysfs_remove_host(shost);
+
+	spin_lock_irqsave(shost->host_lock, flags);
+	set_bit(SHOST_DEL, &shost->shost_state);
+	spin_unlock_irqrestore(shost->host_lock, flags);
+
+	class_device_unregister(&shost->shost_classdev);
+	device_del(&shost->shost_gendev);
 }
 
 /**
@@ -89,21 +107,45 @@ int scsi_add_host(struct Scsi_Host *shost, struct device *dev)
 	if (!shost->can_queue) {
 		printk(KERN_ERR "%s: can_queue = 0 no longer supported\n",
 				sht->name);
-		error = -EINVAL;
+		return -EINVAL;
 	}
 
-	error = scsi_sysfs_add_host(shost, dev);
-	if (!error)
-		scsi_proc_host_add(shost);
+	if (!shost->shost_gendev.parent)
+		shost->shost_gendev.parent = dev ? dev : &legacy_bus;
+
+	error = device_add(&shost->shost_gendev);
+	if (error)
+		goto out;
+
+	set_bit(SHOST_ADD, &shost->shost_state);
+	get_device(shost->shost_gendev.parent);
+
+	error = class_device_add(&shost->shost_classdev);
+	if (error)
+		goto out_del_gendev;
+
+	get_device(&shost->shost_gendev);
+
+	error = scsi_sysfs_add_host(shost);
+	if (error)
+		goto out_del_classdev;
+
+	scsi_proc_host_add(shost);
+	return error;
+
+ out_del_classdev:
+	class_device_del(&shost->shost_classdev);
+ out_del_gendev:
+	device_del(&shost->shost_gendev);
+ out:
 	return error;
 }
 
-/**
- * scsi_free_sdev - free a scsi hosts resources
- * @shost:	scsi host to free 
- **/
-void scsi_free_shost(struct Scsi_Host *shost)
+static void scsi_host_dev_release(struct device *dev)
 {
+	struct Scsi_Host *shost = dev_to_shost(dev);
+	struct device *parent = dev->parent;
+
 	if (shost->ehandler) {
 		DECLARE_COMPLETION(sem);
 		shost->eh_notify = &sem;
@@ -115,6 +157,8 @@ void scsi_free_shost(struct Scsi_Host *shost)
 
 	scsi_proc_hostdir_rm(shost->hostt);
 	scsi_destroy_command_freelist(shost);
+
+	put_device(parent);
 	kfree(shost);
 }
 
@@ -214,7 +258,18 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 	if (rval)
 		goto fail;
 
-	scsi_sysfs_init_host(shost);
+	device_initialize(&shost->shost_gendev);
+	snprintf(shost->shost_gendev.bus_id, BUS_ID_SIZE, "host%d",
+		shost->host_no);
+	snprintf(shost->shost_gendev.name, DEVICE_NAME_SIZE, "%s",
+		shost->hostt->proc_name);
+	shost->shost_gendev.release = scsi_host_dev_release;
+
+	class_device_initialize(&shost->shost_classdev);
+	shost->shost_classdev.dev = &shost->shost_gendev;
+	shost->shost_classdev.class = &shost_class;
+	snprintf(shost->shost_classdev.class_id, BUS_ID_SIZE, "host%d",
+		  shost->host_no);
 
 	shost->eh_notify = &complete;
 	/* XXX(hch): handle error return */
@@ -299,3 +354,13 @@ void scsi_host_put(struct Scsi_Host *shost)
 {
 	put_device(&shost->shost_gendev);
 }
+
+int scsi_init_hosts(void)
+{
+	return class_register(&shost_class);
+}
+
+void scsi_exit_hosts(void)
+{
+	class_unregister(&shost_class);
+}

drivers/scsi/ips.h

@@ -106,8 +106,10 @@
       #define IPS_REMOVE_HOST(shost)
       #define IPS_SCSI_SET_DEVICE(sh,ha)   scsi_set_pci_device(sh, (ha)->pcidev)
       #define IPS_PRINTK(level, pcidev, format, arg...)                 \
-            printk(level "%s %s:" format , (pcidev)->driver->name ,     \
-            pci_name(pcidev) , ## arg)
+            printk(level "%s %s:" format , "ips" ,     \
+            (pcidev)->slot_name , ## arg)
+      #define scsi_host_alloc(sh,size)         scsi_register(sh,size)
+      #define scsi_host_put(sh)             scsi_unregister(sh)
    #else
       #define IPS_REGISTER_HOSTS(SHT)      (!ips_detect(SHT))
       #define IPS_UNREGISTER_HOSTS(SHT)
@@ -126,22 +128,13 @@
       #define min(x,y) ((x) < (y) ? x : y)
    #endif
 
+   #define pci_dma_hi32(a)         ((a >> 16) >> 16)
    #define pci_dma_lo32(a)         (a & 0xffffffff)
 
    #if (BITS_PER_LONG > 32) || (defined CONFIG_HIGHMEM64G && defined IPS_HIGHIO)
       #define IPS_ENABLE_DMA64        (1)
-      #define pci_dma_hi32(a)         (a >> 32)
    #else
       #define IPS_ENABLE_DMA64        (0)
-      #define pci_dma_hi32(a)         (0)
-   #endif
-
-   #if defined(__ia64__)
-      #define IPS_ATOMIC_GFP	(GFP_DMA | GFP_ATOMIC)
-      #define IPS_INIT_GFP	GFP_DMA
-   #else
-      #define IPS_ATOMIC_GFP    GFP_ATOMIC
-      #define IPS_INIT_GFP	GFP_KERNEL
    #endif
 
    /*
@@ -451,9 +444,11 @@
     * Scsi_Host Template
     */
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
+   static int ips_proc24_info(char *, char **, off_t, int, int, int);
    static void ips_select_queue_depth(struct Scsi_Host *, Scsi_Device *);
    static int ips_biosparam(Disk *disk, kdev_t dev, int geom[]);
 #else
+   int ips_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
    static int ips_biosparam(struct scsi_device *sdev, struct block_device *bdev,
 		sector_t capacity, int geom[]);
    int ips_slave_configure(Scsi_Device *SDptr);
@@ -1106,7 +1101,8 @@ typedef struct ips_ha {
    uint16_t           device_id;          /* PCI device ID              */
    uint8_t            slot_num;           /* PCI Slot Number            */
    uint16_t           subdevice_id;       /* Subsystem device ID        */
-   uint8_t            ioctl_order;        /* Number of pages in ioctl   */
+   int                ioctl_len;          /* size of ioctl buffer       */
+   dma_addr_t         ioctl_busaddr;      /* dma address of ioctl buffer*/
    uint8_t            bios_version[8];    /* BIOS Revision              */
    uint32_t           mem_addr;           /* Memory mapped address      */
    uint32_t           io_len;             /* Size of IO Address         */
@@ -1116,8 +1112,10 @@ typedef struct ips_ha {
    ips_hw_func_t      func;               /* hw function pointers       */
    struct pci_dev    *pcidev;             /* PCI device handle          */
    char              *flash_data;         /* Save Area for flash data   */
-   u8                 flash_order;        /* Save Area for flash size order */
+   int                flash_len;          /* length of flash buffer     */
    u32                flash_datasize;     /* Save Area for flash data size */
+   dma_addr_t         flash_busaddr;      /* dma address of flash buffer*/
+   dma_addr_t         enq_busaddr;        /* dma address of enq struct  */
    uint8_t            requires_esl;       /* Requires an EraseStripeLock */
 } ips_ha_t;
 
@@ -1203,25 +1201,29 @@ typedef struct {
 *
 *************************************************************************/
 
-#define IPS_VER_MAJOR 5
-#define IPS_VER_MAJOR_STRING "5"
-#define IPS_VER_MINOR 99
-#define IPS_VER_MINOR_STRING "99"
-#define IPS_VER_BUILD 00
-#define IPS_VER_BUILD_STRING "00"
-#define IPS_VER_STRING "5.99.00"
-#define IPS_BUILD_IDENT 1132
+#define IPS_VER_MAJOR 6
+#define IPS_VER_MAJOR_STRING "6"
+#define IPS_VER_MINOR 10
+#define IPS_VER_MINOR_STRING "10"
+#define IPS_VER_BUILD 90
+#define IPS_VER_BUILD_STRING "90"
+#define IPS_VER_STRING "6.10.90"
+#define IPS_RELEASE_ID 0x00010000
+#define IPS_BUILD_IDENT 364
+#define IPS_LEGALCOPYRIGHT_STRING "(C) Copyright IBM Corp. 1994, 2003. All Rights Reserved."
+#define IPS_ADAPTECCOPYRIGHT_STRING "(c) Copyright Adaptec, Inc. 2002 to present. All Rights Reserved."
+#define IPS_NT_LEGALCOPYRIGHT_STRING "(C) Copyright IBM Corp. 1994, 2003."
 
 /* Version numbers for various adapters */
 #define IPS_VER_SERVERAID1 "2.25.01"
 #define IPS_VER_SERVERAID2 "2.88.13"
 #define IPS_VER_NAVAJO "2.88.13"
-#define IPS_VER_SERVERAID3 "5.11.05"
-#define IPS_VER_SERVERAID4H "5.11.05"
-#define IPS_VER_SERVERAID4MLx "5.11.05"
-#define IPS_VER_SARASOTA "5.11.05"
-#define IPS_VER_MARCO "0.00.00"
-#define IPS_VER_SEBRING "0.00.00"
+#define IPS_VER_SERVERAID3 "6.10.24"
+#define IPS_VER_SERVERAID4H "6.10.24"
+#define IPS_VER_SERVERAID4MLx "6.10.24"
+#define IPS_VER_SARASOTA "6.10.24"
+#define IPS_VER_MARCO "6.10.24"
+#define IPS_VER_SEBRING "6.10.24"
 
 /* Compatability IDs for various adapters */
 #define IPS_COMPAT_UNKNOWN ""
@@ -1230,17 +1232,17 @@ typedef struct {
 #define IPS_COMPAT_SERVERAID2 "2.88.13"
 #define IPS_COMPAT_NAVAJO  "2.88.13"
 #define IPS_COMPAT_KIOWA "2.88.13"
-#define IPS_COMPAT_SERVERAID3H  "SA510"
-#define IPS_COMPAT_SERVERAID3L  "SA510"
-#define IPS_COMPAT_SERVERAID4H  "SA510"
-#define IPS_COMPAT_SERVERAID4M  "SA510"
-#define IPS_COMPAT_SERVERAID4L  "SA510"
-#define IPS_COMPAT_SERVERAID4Mx "SA510"
-#define IPS_COMPAT_SERVERAID4Lx "SA510"
-#define IPS_COMPAT_SARASOTA     "SA510"
-#define IPS_COMPAT_MARCO        "SA000"
-#define IPS_COMPAT_SEBRING      "SA000"
-#define IPS_COMPAT_BIOS "SA510"
+#define IPS_COMPAT_SERVERAID3H  "SB610"
+#define IPS_COMPAT_SERVERAID3L  "SB610"
+#define IPS_COMPAT_SERVERAID4H  "SB610"
+#define IPS_COMPAT_SERVERAID4M  "SB610"
+#define IPS_COMPAT_SERVERAID4L  "SB610"
+#define IPS_COMPAT_SERVERAID4Mx "SB610"
+#define IPS_COMPAT_SERVERAID4Lx "SB610"
+#define IPS_COMPAT_SARASOTA     "SB610"
+#define IPS_COMPAT_MARCO        "SB610"
+#define IPS_COMPAT_SEBRING      "SB610"
+#define IPS_COMPAT_BIOS "SB610"
 
 #define IPS_COMPAT_MAX_ADAPTER_TYPE 16
 #define IPS_COMPAT_ID_LENGTH 8

drivers/scsi/pcmcia/aha152x_stub.c

@@ -177,13 +177,8 @@ static void aha152x_detach(dev_link_t *link)
     if (*linkp == NULL)
 	return;
 
-    if (link->state & DEV_CONFIG) {
+    if (link->state & DEV_CONFIG)
 	aha152x_release_cs(link);
-	if (link->state & DEV_STALE_CONFIG) {
-	    link->state |= DEV_STALE_LINK;
-	    return;
-	}
-    }
 
     if (link->handle)
 	CardServices(DeregisterClient, link->handle);
@@ -302,9 +297,6 @@ static void aha152x_release_cs(dev_link_t *link)
     
 	link->state &= ~DEV_CONFIG;
 	scsi_unregister(info->host);
-
-	if (link->state & DEV_STALE_LINK)
-		aha152x_detach(link);
 }
 
 static int aha152x_event(event_t event, int priority,

drivers/scsi/pcmcia/fdomain_stub.c

@@ -166,13 +166,8 @@ static void fdomain_detach(dev_link_t *link)
     if (*linkp == NULL)
 	return;
 
-    if (link->state & DEV_CONFIG) {
+    if (link->state & DEV_CONFIG)
 	fdomain_release(link);
-	if (link->state & DEV_STALE_CONFIG) {
-	    link->state |= DEV_STALE_LINK;
-	    return;
-	}
-    }
 
     if (link->handle)
 	CardServices(DeregisterClient, link->handle);
@@ -283,9 +278,7 @@ static void fdomain_release(dev_link_t *link)
     scsi_unregister(info->host);
 
     link->state &= ~DEV_CONFIG;
-    if (link->state & DEV_STALE_LINK)
-	fdomain_detach(link);
-} /* fdomain_release */
+}
 
 /*====================================================================*/
 

drivers/scsi/pcmcia/nsp_cs.c

@@ -1553,18 +1553,12 @@ static void nsp_cs_detach(dev_link_t *link)
 		return;
 	}
 
-	if (link->state & DEV_CONFIG) {
+	if (link->state & DEV_CONFIG)
 		nsp_cs_release(link);
-		if (link->state & DEV_STALE_CONFIG) {
-			link->state |= DEV_STALE_LINK;
-			return;
-		}
-	}
 
 	/* Break the link with Card Services */
-	if (link->handle) {
+	if (link->handle)
 		CardServices(DeregisterClient, link->handle);
-	}
 
 	/* Unlink device structure, free bits */
 	*linkp = link->next;
@@ -1792,17 +1786,6 @@ static void nsp_cs_release(dev_link_t *link)
 
 	DEBUG(0, "%s(0x%p)\n", __FUNCTION__, link);
 
-	/*
-	 * If the device is currently in use, we won't release until it
-	 * is actually closed.
-	 */
-	if (link->open) {
-		DEBUG(1, "nsp_cs: release postponed, '%s' still open\n",
-		      link->dev->dev_name);
-		link->state |= DEV_STALE_CONFIG;
-		return;
-	}
-
 	/* Unlink the device chain */
 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,2))
 	scsi_unregister_module(MODULE_SCSI_HA, &nsp_driver_template);
@@ -1824,11 +1807,7 @@ static void nsp_cs_release(dev_link_t *link)
 		CardServices(ReleaseIRQ,    link->handle, &link->irq);
 	}
 	link->state &= ~DEV_CONFIG;
-
-	if (link->state & DEV_STALE_LINK) {
-		nsp_cs_detach(link);
-	}
-} /* nsp_cs_release */
+}
 
 /*======================================================================
 

drivers/scsi/pcmcia/qlogic_stub.c

@@ -165,13 +165,8 @@ static void qlogic_detach(dev_link_t * link)
 	if (*linkp == NULL)
 		return;
 
-	if (link->state & DEV_CONFIG) {
+	if (link->state & DEV_CONFIG)
 		qlogic_release(link);
-		if (link->state & DEV_STALE_CONFIG) {
-			link->state |= DEV_STALE_LINK;
-			return;
-		}
-	}
 
 	if (link->handle)
 		CardServices(DeregisterClient, link->handle);
@@ -296,9 +291,7 @@ static void qlogic_release(dev_link_t *link)
 	scsi_unregister(info->host);
 
 	link->state &= ~DEV_CONFIG;
-	if (link->state & DEV_STALE_LINK)
-		qlogic_detach(link);
-}				/* qlogic_release */
+}
 
 /*====================================================================*/
 

drivers/scsi/ppa.c

@@ -76,6 +76,7 @@ int ppa_release(struct Scsi_Host *host)
     int host_no = host->unique_id;
 
     printk("Releasing ppa%i\n", host_no);
+    scsi_unregister(host);
     parport_unregister_device(ppa_hosts[host_no].dev);
     return 0;
 }

drivers/scsi/qla1280.c

@@ -16,9 +16,11 @@
 * General Public License for more details.
 *
 ******************************************************************************/
-#define QLA1280_VERSION      "3.23.34"
+#define QLA1280_VERSION      "3.23.35"
 /*****************************************************************************
     Revision History:
+    Rev  3.23.35 August 14, 2003, Jes Sorensen
+	- Build against 2.6
     Rev  3.23.34 July 23, 2003, Jes Sorensen
 	- Remove pointless TRUE/FALSE macros
 	- Clean up vchan handling
@@ -296,14 +298,12 @@
 #include <linux/sched.h>
 #include <linux/pci.h>
 #include <linux/proc_fs.h>
-#include <linux/blk.h>
 #include <linux/stat.h>
 #include <linux/slab.h>
 #include <linux/pci_ids.h>
 #include <linux/interrupt.h>
 #include <linux/init.h>
 
-
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/byteorder.h>
@@ -312,7 +312,10 @@
 #include <asm/system.h>
 
 #if LINUX_VERSION_CODE < 0x020545
+#include <linux/blk.h>
 #include "sd.h"
+#else
+#include <scsi/scsi_host.h>
 #endif
 #include "scsi.h"
 #include "hosts.h"
@@ -634,11 +637,14 @@ static int ql_debug_level = 1;
  *************************************************************************/
 #define	PROC_BUF	&qla1280_buffer[len]
 
-int
-qla1280_proc_info(char *buffer, char **start, off_t offset, int length,
-		  int hostno, int inout)
+#if LINUX_VERSION_CODE < 0x020600
+int qla1280_proc_info(char *buffer, char **start, off_t offset, int length,
+		      int hostno, int inout)
+#else
+int qla1280_proc_info(struct Scsi_Host *host, char *buffer, char **start,
+		      off_t offset, int length, int inout)
+#endif
 {
-	struct Scsi_Host *host;
 	struct scsi_qla_host *ha;
 	int size = 0;
 	int len = 0;
@@ -647,7 +653,10 @@ qla1280_proc_info(char *buffer, char **start, off_t offset, int length,
 	struct scsi_lu *up;
 	uint32_t b, t, l;
 #endif
-
+#if LINUX_VERSION_CODE >= 0x020600
+	ha = (struct scsi_qla_host *)host->hostdata;
+#else
+	struct Scsi_Host *host;
 	/* Find the host that was specified */
 	for (ha = qla1280_hostlist; (ha != NULL)
 		     && ha->host->host_no != hostno; ha = ha->next) ;
@@ -664,6 +673,7 @@ qla1280_proc_info(char *buffer, char **start, off_t offset, int length,
 	}
 
 	host = ha->host;
+#endif
 
 	if (inout)
 		return -ENOSYS;
@@ -1828,7 +1838,7 @@ qla1280_done(struct scsi_qla_host *ha, struct srb ** done_q_first,
 		CMD_HANDLE(sp->cmd) = (unsigned char *)INVALID_HANDLE;
 		ha->actthreads--;
 
-#if LINUX_KERNEL_VERSION < 0x020500
+#if LINUX_VERSION_CODE < 0x020500
 		if (cmd->cmnd[0] == INQUIRY)
 			qla1280_get_target_options(cmd, ha);
 #endif
@@ -4497,7 +4507,7 @@ qla1280_rst_aen(struct scsi_qla_host *ha)
 }
 
 
-#if LINUX_KERNEL_VERSION < 0x020500
+#if LINUX_VERSION_CODE < 0x020500
 /*
  *
  */

drivers/scsi/qla1280.h

@@ -1111,7 +1111,11 @@ struct scsi_qla_host {
 /*
  *  Linux - SCSI Driver Interface Function Prototypes.
  */
+#if LINUX_VERSION_CODE < 0x020600
 int qla1280_proc_info(char *, char **, off_t, int, int, int);
+#else
+int qla1280_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
+#endif
 const char *qla1280_info(struct Scsi_Host *host);
 int qla1280_detect(Scsi_Host_Template *);
 int qla1280_release(struct Scsi_Host *);
@@ -1147,8 +1151,6 @@ int qla1280_eh_adapter_reset(struct scsi_cmnd *cmd);
 	.detect = qla1280_detect,				\
 	.release = qla1280_release,				\
 	.info = qla1280_info,					\
-	.ioctl = NULL,						\
-	.command = NULL,					\
 	.queuecommand = qla1280_queuecommand,			\
 	.eh_strategy_handler = NULL,				\
 	.eh_abort_handler = qla1280_eh_abort,			\

drivers/scsi/scsi.c

@@ -1003,9 +1003,12 @@ static int __init init_scsi(void)
 	error = scsi_init_devinfo();
 	if (error)
 		goto cleanup_procfs;
-	error = scsi_sysfs_register();
+	error = scsi_init_hosts();
 	if (error)
 		goto cleanup_devlist;
+	error = scsi_sysfs_register();
+	if (error)
+		goto cleanup_hosts;
 
 	for (i = 0; i < NR_CPUS; i++)
 		INIT_LIST_HEAD(&done_q[i]);
@@ -1015,6 +1018,8 @@ static int __init init_scsi(void)
 	printk(KERN_NOTICE "SCSI subsystem initialized\n");
 	return 0;
 
+cleanup_hosts:
+	scsi_exit_hosts();
 cleanup_devlist:
 	scsi_exit_devinfo();
 cleanup_procfs:
@@ -1029,6 +1034,7 @@ static int __init init_scsi(void)
 static void __exit exit_scsi(void)
 {
 	scsi_sysfs_unregister();
+	scsi_exit_hosts();
 	scsi_exit_devinfo();
 	devfs_remove("scsi");
 	scsi_exit_procfs();

drivers/scsi/scsi_error.c

@@ -1285,7 +1285,12 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
 
       maybe_retry:
 
-	if ((++scmd->retries) < scmd->allowed) {
+	/* we requeue for retry because the error was retryable, and
+	 * the request was not marked fast fail.  Note that above,
+	 * even if the request is marked fast fail, we still requeue
+	 * for queue congestion conditions (QUEUE_FULL or BUSY) */
+	if ((++scmd->retries) < scmd->allowed 
+	    && !blk_noretry_request(scmd->request)) {
 		return NEEDS_RETRY;
 	} else {
 		/*

drivers/scsi/scsi_lib.c

@@ -502,14 +502,22 @@ static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int uptodate,
 	 * to queue the remainder of them.
 	 */
 	if (end_that_request_first(req, uptodate, sectors)) {
-		if (requeue) {
-			/*
-			 * Bleah.  Leftovers again.  Stick the leftovers in
-			 * the front of the queue, and goose the queue again.
-			 */
-			scsi_requeue_command(q, cmd);
+		int leftover = req->hard_nr_sectors - sectors;
+
+		/* kill remainder if no retrys */
+		if (!uptodate && blk_noretry_request(req))
+			end_that_request_first(req, 0, leftover);
+		else {
+			if (requeue)
+				/*
+				 * Bleah.  Leftovers again.  Stick the
+				 * leftovers in the front of the
+				 * queue, and goose the queue again.
+				 */
+				scsi_requeue_command(q, cmd);
+
+			return cmd;
 		}
-		return cmd;
 	}
 
 	add_disk_randomness(req->rq_disk);

drivers/scsi/scsi_priv.h

@@ -41,6 +41,12 @@
 #define SCSI_SENSE_VALID(scmd) \
 	(((scmd)->sense_buffer[0] & 0x70) == 0x70)
 
+/*
+ * Special value for scanning to specify scanning or rescanning of all
+ * possible channels, (target) ids, or luns on a given shost.
+ */
+#define SCAN_WILD_CARD	~0
+
 /*
  * scsi_target: representation of a scsi target, for now, this is only
  * used for single_lun devices. If no one has active IO to the target,
@@ -51,6 +57,9 @@ struct scsi_target {
 	unsigned int		starget_refcnt;
 };
 
+/* hosts.c */
+extern int scsi_init_hosts(void);
+extern void scsi_exit_hosts(void);
 
 /* scsi.c */
 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
@@ -106,20 +115,18 @@ extern void scsi_exit_procfs(void);
 #endif /* CONFIG_PROC_FS */
 
 /* scsi_scan.c */
+int scsi_scan_host_selected(struct Scsi_Host *, unsigned int, unsigned int,
+			    unsigned int, int);
 extern void scsi_forget_host(struct Scsi_Host *);
 extern void scsi_free_sdev(struct scsi_device *);
-extern void scsi_free_shost(struct Scsi_Host *);
 extern void scsi_rescan_device(struct device *);
 
 /* scsi_sysfs.c */
 extern int scsi_device_register(struct scsi_device *);
-extern void scsi_sysfs_init_host(struct Scsi_Host *);
-extern int scsi_sysfs_add_host(struct Scsi_Host *, struct device *);
-extern void scsi_sysfs_remove_host(struct Scsi_Host *);
+extern int scsi_sysfs_add_host(struct Scsi_Host *);
 extern int scsi_sysfs_register(void);
 extern void scsi_sysfs_unregister(void);
 
-extern struct class shost_class;
 extern struct class sdev_class;
 extern struct bus_type scsi_bus_type;
 

drivers/scsi/scsi_proc.c

@@ -81,6 +81,9 @@ static int proc_scsi_write_proc(struct file *file, const char *buf,
 
 void scsi_proc_hostdir_add(struct scsi_host_template *sht)
 {
+	if (!sht->proc_info)
+		return;
+
 	down(&global_host_template_sem);
 	if (!sht->present++) {
 		sht->proc_dir = proc_mkdir(sht->proc_name, proc_scsi);
@@ -96,6 +99,9 @@ void scsi_proc_hostdir_add(struct scsi_host_template *sht)
 
 void scsi_proc_hostdir_rm(struct scsi_host_template *sht)
 {
+	if (!sht->proc_info)
+		return;
+
 	down(&global_host_template_sem);
 	if (!--sht->present && sht->proc_dir) {
 		remove_proc_entry(sht->proc_name, proc_scsi);
@@ -189,21 +195,13 @@ static int proc_print_scsidevice(struct device *dev, void *data)
 static int scsi_add_single_device(uint host, uint channel, uint id, uint lun)
 {
 	struct Scsi_Host *shost;
-	struct scsi_device *sdev;
 	int error = -ENXIO;
 
 	shost = scsi_host_lookup(host);
 	if (IS_ERR(shost))
 		return PTR_ERR(shost);
 
-	if (!scsi_find_device(shost, channel, id, lun)) {
-		sdev = scsi_add_device(shost, channel, id, lun);
-		if (IS_ERR(sdev))
-			error = PTR_ERR(sdev);
-		else
-			error = 0;
-	}
-
+	error = scsi_scan_host_selected(shost, channel, id, lun, 1);
 	scsi_host_put(shost);
 	return error;
 }

drivers/scsi/scsi_scan.c

@@ -656,13 +656,32 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags)
  **/
 static int scsi_probe_and_add_lun(struct Scsi_Host *host,
 		uint channel, uint id, uint lun, int *bflagsp,
-		struct scsi_device **sdevp)
+		struct scsi_device **sdevp, int rescan)
 {
 	struct scsi_device *sdev;
 	struct scsi_request *sreq;
 	unsigned char *result;
 	int bflags, res = SCSI_SCAN_NO_RESPONSE;
 
+	/*
+	 * The rescan flag is used as an optimization, the first scan of a
+	 * host adapter calls into here with rescan == 0.
+	 */
+	if (rescan) {
+		sdev = scsi_find_device(host, channel, id, lun);
+		if (sdev) {
+			SCSI_LOG_SCAN_BUS(3, printk(KERN_INFO
+				"scsi scan: device exists on <%d:%d:%d:%d>\n",
+				host->host_no, channel, id, lun));
+			if (sdevp)
+				*sdevp = sdev;
+			if (bflagsp)
+				*bflagsp = scsi_get_device_flags(sdev->vendor,
+								 sdev->model);
+			return SCSI_SCAN_LUN_PRESENT;
+		}
+	}
+
 	sdev = scsi_alloc_sdev(host, channel, id, lun);
 	if (!sdev)
 		goto out;
@@ -737,7 +756,7 @@ static int scsi_probe_and_add_lun(struct Scsi_Host *host,
  *     Modifies sdevscan->lun.
  **/
 static void scsi_sequential_lun_scan(struct Scsi_Host *shost, uint channel,
-		uint id, int bflags, int lun0_res, int scsi_level)
+		uint id, int bflags, int lun0_res, int scsi_level, int rescan)
 {
 	unsigned int sparse_lun, lun, max_dev_lun;
 
@@ -806,7 +825,8 @@ static void scsi_sequential_lun_scan(struct Scsi_Host *shost, uint channel,
 	 */
 	for (lun = 1; lun < max_dev_lun; ++lun)
 		if ((scsi_probe_and_add_lun(shost, channel, id, lun,
-		      NULL, NULL) != SCSI_SCAN_LUN_PRESENT) && !sparse_lun)
+		      NULL, NULL, rescan) != SCSI_SCAN_LUN_PRESENT) &&
+		    !sparse_lun)
 			return;
 }
 
@@ -857,7 +877,8 @@ static int scsilun_to_int(struct scsi_lun *scsilun)
  *     0: scan completed (or no memory, so further scanning is futile)
  *     1: no report lun scan, or not configured
  **/
-static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags)
+static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags,
+				int rescan)
 {
 	char devname[64];
 	unsigned char scsi_cmd[MAX_COMMAND_SIZE];
@@ -1011,7 +1032,7 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags)
 			int res;
 
 			res = scsi_probe_and_add_lun(sdev->host, sdev->channel,
-				sdev->id, lun, NULL, NULL);
+				sdev->id, lun, NULL, NULL, rescan);
 			if (res == SCSI_SCAN_NO_RESPONSE) {
 				/*
 				 * Got some results, but now none, abort.
@@ -1037,7 +1058,7 @@ static int scsi_report_lun_scan(struct scsi_device *sdev, int bflags)
 	return 0;
 }
 #else
-# define scsi_report_lun_scan(sdev, blags)	(1)
+# define scsi_report_lun_scan(sdev, blags, rescan)	(1)
 #endif	/* CONFIG_SCSI_REPORT_LUNS */
 
 struct scsi_device *scsi_add_device(struct Scsi_Host *shost,
@@ -1046,7 +1067,7 @@ struct scsi_device *scsi_add_device(struct Scsi_Host *shost,
 	struct scsi_device *sdev;
 	int res;
 
-	res = scsi_probe_and_add_lun(shost, channel, id, lun, NULL, &sdev);
+	res = scsi_probe_and_add_lun(shost, channel, id, lun, NULL, &sdev, 1);
 	if (res != SCSI_SCAN_LUN_PRESENT)
 		sdev = ERR_PTR(-ENODEV);
 	return sdev;
@@ -1083,7 +1104,7 @@ void scsi_rescan_device(struct device *dev)
  *     sequential scan of LUNs on the target id.
  **/
 static void scsi_scan_target(struct Scsi_Host *shost, unsigned int channel,
-			     unsigned int id)
+			     unsigned int id, unsigned int lun, int rescan)
 {
 	int bflags = 0;
 	int res;
@@ -1095,19 +1116,29 @@ static void scsi_scan_target(struct Scsi_Host *shost, unsigned int channel,
 		 */
 		return;
 
+	if (lun != SCAN_WILD_CARD) {
+		/*
+		 * Scan for a specific host/chan/id/lun.
+		 */
+		scsi_probe_and_add_lun(shost, channel, id, lun, NULL, NULL,
+				       rescan);
+		return;
+	}
+
 	/*
 	 * Scan LUN 0, if there is some response, scan further. Ideally, we
 	 * would not configure LUN 0 until all LUNs are scanned.
 	 */
-	res = scsi_probe_and_add_lun(shost, channel, id, 0, &bflags, &sdev);
+	res = scsi_probe_and_add_lun(shost, channel, id, 0, &bflags, &sdev,
+				     rescan);
 	if (res == SCSI_SCAN_LUN_PRESENT) {
-		if (scsi_report_lun_scan(sdev, bflags) != 0)
+		if (scsi_report_lun_scan(sdev, bflags, rescan) != 0)
 			/*
 			 * The REPORT LUN did not scan the target,
 			 * do a sequential scan.
 			 */
 			scsi_sequential_lun_scan(shost, channel, id, bflags,
-				       	res, sdev->scsi_level);
+				       	res, sdev->scsi_level, rescan);
 	} else if (res == SCSI_SCAN_TARGET_PRESENT) {
 		/*
 		 * There's a target here, but lun 0 is offline so we
@@ -1116,37 +1147,26 @@ static void scsi_scan_target(struct Scsi_Host *shost, unsigned int channel,
 		 * a default scsi level of SCSI_2
 		 */
 		scsi_sequential_lun_scan(shost, channel, id, BLIST_SPARSELUN,
-				SCSI_SCAN_TARGET_PRESENT, SCSI_2);
+				SCSI_SCAN_TARGET_PRESENT, SCSI_2, rescan);
 	}
 }
 
-/**
- * scsi_scan_host - scan the given adapter
- * @shost:	adapter to scan
- *
- * Description:
- *     Iterate and call scsi_scan_target to scan all possible target id's
- *     on all possible channels.
- **/
-void scsi_scan_host(struct Scsi_Host *shost)
+static void scsi_scan_channel(struct Scsi_Host *shost, unsigned int channel,
+			      unsigned int id, unsigned int lun, int rescan)
 {
-	uint channel, id, order_id;
+	uint order_id;
 
-	/*
-	 * The sdevscan host, channel, id and lun are filled in as
-	 * needed to scan.
-	 */
-	for (channel = 0; channel <= shost->max_channel; channel++) {
-		/*
-		 * XXX adapter drivers when possible (FCP, iSCSI)
-		 * could modify max_id to match the current max,
-		 * not the absolute max.
-		 *
-		 * XXX add a shost id iterator, so for example,
-		 * the FC ID can be the same as a target id
-		 * without a huge overhead of sparse id's.
-		 */
+	if (id == SCAN_WILD_CARD)
 		for (id = 0; id < shost->max_id; ++id) {
+			/*
+			 * XXX adapter drivers when possible (FCP, iSCSI)
+			 * could modify max_id to match the current max,
+			 * not the absolute max.
+			 *
+			 * XXX add a shost id iterator, so for example,
+			 * the FC ID can be the same as a target id
+			 * without a huge overhead of sparse id's.
+			 */
 			if (shost->reverse_ordering)
 				/*
 				 * Scan from high to low id.
@@ -1154,9 +1174,39 @@ void scsi_scan_host(struct Scsi_Host *shost)
 				order_id = shost->max_id - id - 1;
 			else
 				order_id = id;
-			scsi_scan_target(shost, channel, order_id);
+			scsi_scan_target(shost, channel, order_id, lun, rescan);
 		}
-	}
+	else
+		scsi_scan_target(shost, channel, id, lun, rescan);
+}
+
+int scsi_scan_host_selected(struct Scsi_Host *shost, unsigned int channel,
+			    unsigned int id, unsigned int lun, int rescan)
+{
+	SCSI_LOG_SCAN_BUS(3, printk (KERN_INFO "%s: <%u:%u:%u:%u>\n",
+		__FUNCTION__, shost->host_no, channel, id, lun));
+
+	if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) ||
+	    ((id != SCAN_WILD_CARD) && (id > shost->max_id)) ||
+	    ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun)))
+		return -EINVAL;
+
+	if (channel == SCAN_WILD_CARD) 
+		for (channel = 0; channel <= shost->max_channel; channel++)
+			scsi_scan_channel(shost, channel, id, lun, rescan);
+	else
+		scsi_scan_channel(shost, channel, id, lun, rescan);
+	return 0;
+}
+
+/**
+ * scsi_scan_host - scan the given adapter
+ * @shost:	adapter to scan
+ **/
+void scsi_scan_host(struct Scsi_Host *shost)
+{
+	scsi_scan_host_selected(shost, SCAN_WILD_CARD, SCAN_WILD_CARD,
+				SCAN_WILD_CARD, 0);
 }
 
 void scsi_forget_host(struct Scsi_Host *shost)

drivers/scsi/scsi_sysfs.c

@@ -15,6 +15,43 @@
 #include "hosts.h"
 
 #include "scsi_priv.h"
+#include "scsi_logging.h"
+
+static int check_set(unsigned int *val, char *src)
+{
+	char *last;
+
+	if (strncmp(src, "-", 20) == 0) {
+		*val = SCAN_WILD_CARD;
+	} else {
+		/*
+		 * Doesn't check for int overflow
+		 */
+		*val = simple_strtoul(src, &last, 0);
+		if (*last != '\0')
+			return 1;
+	}
+	return 0;
+}
+
+static int scsi_scan(struct Scsi_Host *shost, const char *str)
+{
+	char s1[15], s2[15], s3[15], junk;
+	unsigned int channel, id, lun;
+	int res;
+
+	res = sscanf(str, "%10s %10s %10s %c", s1, s2, s3, &junk);
+	if (res != 3)
+		return -EINVAL;
+	if (check_set(&channel, s1))
+		return -EINVAL;
+	if (check_set(&id, s2))
+		return -EINVAL;
+	if (check_set(&lun, s3))
+		return -EINVAL;
+	res = scsi_scan_host_selected(shost, channel, id, lun, 1);
+	return res;
+}
 
 /*
  * shost_show_function: macro to create an attr function that can be used to
@@ -39,6 +76,20 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO, show_##field, NULL)
 /*
  * Create the actual show/store functions and data structures.
  */
+
+static ssize_t store_scan(struct class_device *class_dev, const char *buf,
+			  size_t count)
+{
+	struct Scsi_Host *shost = class_to_shost(class_dev);
+	int res;
+
+	res = scsi_scan(shost, buf);
+	if (res == 0)
+		res = count;
+	return res;
+};
+static CLASS_DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
+
 shost_rd_attr(unique_id, "%u\n");
 shost_rd_attr(host_busy, "%hu\n");
 shost_rd_attr(cmd_per_lun, "%hd\n");
@@ -51,33 +102,10 @@ static struct class_device_attribute *scsi_sysfs_shost_attrs[] = {
 	&class_device_attr_cmd_per_lun,
 	&class_device_attr_sg_tablesize,
 	&class_device_attr_unchecked_isa_dma,
+	&class_device_attr_scan,
 	NULL
 };
 
-static void scsi_host_cls_release(struct class_device *class_dev)
-{
-	struct Scsi_Host *shost;
-
-	shost = class_to_shost(class_dev);
-	put_device(&shost->shost_gendev);
-}
-
-static void scsi_host_dev_release(struct device *dev)
-{
-	struct Scsi_Host *shost;
-	struct device *parent;
-
-	parent = dev->parent;
-	shost = dev_to_shost(dev);
-	scsi_free_shost(shost);
-	put_device(parent);
-}
-
-struct class shost_class = {
-	.name		= "scsi_host",
-	.release	= scsi_host_cls_release,
-};
-
 static void scsi_device_cls_release(struct class_device *class_dev)
 {
 	struct scsi_device *sdev;
@@ -113,33 +141,23 @@ struct bus_type scsi_bus_type = {
         .match		= scsi_bus_match,
 };
 
-
 int scsi_sysfs_register(void)
 {
 	int error;
 
 	error = bus_register(&scsi_bus_type);
-	if (error)
-		return error;
-	error = class_register(&shost_class);
-	if (error)
-		goto bus_unregister;
-	error = class_register(&sdev_class);
-	if (error)
-		goto class_unregister;
-	return 0;
+	if (!error) {
+		error = class_register(&sdev_class);
+		if (error)
+			bus_unregister(&scsi_bus_type);
+	}
 
- class_unregister:
-	class_unregister(&shost_class);
- bus_unregister:
-	bus_unregister(&scsi_bus_type);
 	return error;
 }
 
 void scsi_sysfs_unregister(void)
 {
 	class_unregister(&sdev_class);
-	class_unregister(&shost_class);
 	bus_unregister(&scsi_bus_type);
 }
 
@@ -243,6 +261,24 @@ store_rescan_field (struct device *dev, const char *buf, size_t count)
 
 static DEVICE_ATTR(rescan, S_IWUSR, NULL, store_rescan_field)
 
+static ssize_t sdev_store_delete(struct device *dev, const char *buf,
+				 size_t count)
+{
+	struct scsi_device *sdev = to_scsi_device(dev);
+	int res = count;
+
+	if (sdev->access_count)
+		/*
+		 * FIXME and scsi_proc.c: racey use of access_count,
+		 * possibly add a new arg to scsi_remove_device.
+		 */
+		res = -EBUSY;
+	else
+		scsi_remove_device(sdev);
+	return res;
+};
+static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);
+
 /* Default template for device attributes.  May NOT be modified */
 static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
 	&dev_attr_device_blocked,
@@ -255,6 +291,7 @@ static struct device_attribute *scsi_sysfs_sdev_attrs[] = {
 	&dev_attr_rev,
 	&dev_attr_online,
 	&dev_attr_rescan,
+	&dev_attr_delete,
 	NULL
 };
 
@@ -403,20 +440,6 @@ int scsi_register_interface(struct class_interface *intf)
 }
 
 
-void scsi_sysfs_init_host(struct Scsi_Host *shost)
-{
-	device_initialize(&shost->shost_gendev);
-	snprintf(shost->shost_gendev.bus_id, BUS_ID_SIZE, "host%d",
-		shost->host_no);
-	shost->shost_gendev.release = scsi_host_dev_release;
-
-	class_device_initialize(&shost->shost_classdev);
-	shost->shost_classdev.dev = &shost->shost_gendev;
-	shost->shost_classdev.class = &shost_class;
-	snprintf(shost->shost_classdev.class_id, BUS_ID_SIZE, "host%d",
-		  shost->host_no);
-}
-
 static struct class_device_attribute *class_attr_overridden(
 		struct class_device_attribute **attrs,
 		struct class_device_attribute *attr)
@@ -459,31 +482,16 @@ static int class_attr_add(struct class_device *classdev,
  * @shost:     scsi host struct to add to subsystem
  * @dev:       parent struct device pointer
  **/
-int scsi_sysfs_add_host(struct Scsi_Host *shost, struct device *dev)
+int scsi_sysfs_add_host(struct Scsi_Host *shost)
 {
 	int error, i;
 
-	if (!shost->shost_gendev.parent)
-		shost->shost_gendev.parent = dev ? dev : &legacy_bus;
-
-	error = device_add(&shost->shost_gendev);
-	if (error)
-		return error;
-
-	set_bit(SHOST_ADD, &shost->shost_state);
-	get_device(shost->shost_gendev.parent);
-
-	error = class_device_add(&shost->shost_classdev);
-	if (error)
-		goto clean_device;
-
-	get_device(&shost->shost_gendev);
 	if (shost->hostt->shost_attrs) {
 		for (i = 0; shost->hostt->shost_attrs[i]; i++) {
 			error = class_attr_add(&shost->shost_classdev,
 					shost->hostt->shost_attrs[i]);
 			if (error)
-				goto clean_class;
+				return error;
 		}
 	}
 
@@ -493,31 +501,9 @@ int scsi_sysfs_add_host(struct Scsi_Host *shost, struct device *dev)
 			error = class_device_create_file(&shost->shost_classdev,
 					scsi_sysfs_shost_attrs[i]);
 			if (error)
-				goto clean_class;
+				return error;
 		}
 	}
 
-	return error;
-
-clean_class:
-	class_device_del(&shost->shost_classdev);
-clean_device:
-	device_del(&shost->shost_gendev);
-
-	return error;
-}
-
-/**
- * scsi_sysfs_remove_host - remove scsi host from subsystem
- * @shost:     scsi host to remove from subsystem
- **/
-void scsi_sysfs_remove_host(struct Scsi_Host *shost)
-{
-	unsigned long flags;
-	spin_lock_irqsave(shost->host_lock, flags);
-	set_bit(SHOST_DEL, &shost->shost_state);
-	spin_unlock_irqrestore(shost->host_lock, flags);
-
-	class_device_unregister(&shost->shost_classdev);
-	device_del(&shost->shost_gendev);
+	return 0;
 }

drivers/scsi/sd.c

@@ -308,6 +308,8 @@ static int sd_init_command(struct scsi_cmnd * SCpnt)
 		SCpnt->cmnd[4] = (unsigned char) this_count;
 		SCpnt->cmnd[5] = 0;
 	}
+	SCpnt->request_bufflen = SCpnt->bufflen =
+			this_count * sdp->sector_size;
 
 	/*
 	 * We shouldn't disconnect in the middle of a sector, so with a dumb
@@ -1353,10 +1355,14 @@ static int sd_remove(struct device *dev)
 static void sd_shutdown(struct device *dev)
 {
 	struct scsi_device *sdp = to_scsi_device(dev);
-	struct scsi_disk *sdkp = dev_get_drvdata(dev);
+       struct scsi_disk *sdkp;
 	struct scsi_request *sreq;
 	int retries, res;
 
+       sdkp = dev_get_drvdata(dev);
+       if (!sdkp)
+               return;         /* this can happen */
+
 	if (!sdp->online || !sdkp->WCE)
 		return;
 

drivers/scsi/sr.c

@@ -340,6 +340,20 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
 		return 0;
 	}
 
+	{
+		struct scatterlist *sg = SCpnt->request_buffer;
+		int i, size = 0;
+		for (i = 0; i < SCpnt->use_sg; i++)
+			size += sg[i].length;
+
+		if (size != SCpnt->request_bufflen && SCpnt->use_sg) {
+			printk(KERN_ERR "sr: mismatch count %d, bytes %d\n",
+					size, SCpnt->request_bufflen);
+			if (SCpnt->request_bufflen > size)
+				SCpnt->request_bufflen = SCpnt->bufflen = size;
+		}
+	}
+
 	/*
 	 * request doesn't start on hw block boundary, add scatter pads
 	 */
@@ -361,8 +375,11 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
 	SCpnt->cmnd[1] = 0;
 	block = (unsigned int)SCpnt->request->sector / (s_size >> 9);
 
-	if (this_count > 0xffff)
+	if (this_count > 0xffff) {
 		this_count = 0xffff;
+		SCpnt->request_bufflen = SCpnt->bufflen =
+				this_count * s_size;
+	}
 
 	SCpnt->cmnd[2] = (unsigned char) (block >> 24) & 0xff;
 	SCpnt->cmnd[3] = (unsigned char) (block >> 16) & 0xff;
@@ -390,18 +407,6 @@ static int sr_init_command(struct scsi_cmnd * SCpnt)
 	 */
 	SCpnt->done = rw_intr;
 
-	{
-		struct scatterlist *sg = SCpnt->request_buffer;
-		int i, size = 0;
-		for (i = 0; i < SCpnt->use_sg; i++)
-			size += sg[i].length;
-
-		if (size != SCpnt->request_bufflen && SCpnt->use_sg) {
-			printk("sr: mismatch count %d, bytes %d\n", size, SCpnt->request_bufflen);
-			SCpnt->request_bufflen = size;
-		}
-	}
-
 	/*
 	 * This indicates that the command is ready from our end to be
 	 * queued.

drivers/scsi/sym53c8xx_2/sym_glue.c

@@ -2029,7 +2029,7 @@ sym_attach (struct scsi_host_template *tpnt, int unit, sym_device *dev)
 	printf_info("%s: giving up ...\n", sym_name(np));
 	if (np)
 		sym_free_resources(np);
-	scsi_unregister(instance);
+	scsi_host_put(instance);
 
         return -1;
  }

drivers/scsi/sym53c8xx_2/sym_hipd.c

@@ -5942,14 +5942,7 @@ int sym_hcb_attach(hcb_p np, struct sym_fw *fw)
 	 */
 	return 0;
 
-	/*
-	 *  We have failed.
-	 *  We will try to free all the resources we have 
-	 *  allocated, but if we are a boot device, this 
-	 *  will not help that much.;)
-	 */
 attach_failed:
-		sym_hcb_free(np);
 	return -ENXIO;
 }