Merge redhat.com:/home/jgarzik/repo/linus-2.5

into redhat.com:/home/jgarzik/repo/misc-2.5

drivers/pci/pci.c

@@ -88,6 +88,8 @@ pci_max_busnr(void)
  *  %PCI_CAP_ID_MSI          Message Signalled Interrupts
  *
  *  %PCI_CAP_ID_CHSWP        CompactPCI HotSwap 
+ *
+ *  %PCI_CAP_ID_PCIX         PCI-X
  */
 int
 pci_find_capability(struct pci_dev *dev, int cap)

fs/fcntl.c

@@ -75,8 +75,8 @@ static int expand_files(struct files_struct *files, int nr)
 
 /*
  * locate_fd finds a free file descriptor in the open_fds fdset,
- * expanding the fd arrays if necessary.  The files write lock will be
- * held on exit to ensure that the fd can be entered atomically.
+ * expanding the fd arrays if necessary.  Must be called with the
+ * file_lock held for write.
  */
 
 static int locate_fd(struct files_struct *files, 
@@ -86,8 +86,6 @@ static int locate_fd(struct files_struct *files,
 	int error;
 	int start;
 
-	write_lock(&files->file_lock);
-	
 	error = -EINVAL;
 	if (orig_start >= current->rlim[RLIMIT_NOFILE].rlim_cur)
 		goto out;
@@ -131,30 +129,24 @@ static int locate_fd(struct files_struct *files,
 	return error;
 }
 
-static inline void allocate_fd(struct files_struct *files, 
-					struct file *file, int fd)
+static int dupfd(struct file *file, int start)
 {
+	struct files_struct * files = current->files;
+	int fd;
+
+	write_lock(&files->file_lock);
+	fd = locate_fd(files, file, start);
+	if (fd >= 0) {
 		FD_SET(fd, files->open_fds);
 		FD_CLR(fd, files->close_on_exec);
 		write_unlock(&files->file_lock);
 		fd_install(fd, file);
-}
-
-static int dupfd(struct file *file, int start)
-{
-	struct files_struct * files = current->files;
-	int ret;
-
-	ret = locate_fd(files, file, start);
-	if (ret < 0) 
-		goto out_putf;
-	allocate_fd(files, file, ret);
-	return ret;
-
-out_putf:
+	} else {
 		write_unlock(&files->file_lock);
 		fput(file);
-	return ret;
+	}
+
+	return fd;
 }
 
 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd)

fs/proc/generic.c

@@ -488,7 +488,11 @@ struct proc_dir_entry *proc_symlink(const char *name,
 		ent->data = kmalloc((ent->size=strlen(dest))+1, GFP_KERNEL);
 		if (ent->data) {
 			strcpy((char*)ent->data,dest);
-			proc_register(parent, ent);
+			if (proc_register(parent, ent) < 0) {
+				kfree(ent->data);
+				kfree(ent);
+				ent = NULL;
+			}
 		} else {
 			kfree(ent);
 			ent = NULL;
@@ -505,7 +509,10 @@ struct proc_dir_entry *proc_mknod(const char *name, mode_t mode,
 	ent = proc_create(&parent,name,mode,1);
 	if (ent) {
 		ent->rdev = rdev;
-		proc_register(parent, ent);
+		if (proc_register(parent, ent) < 0) {
+			kfree(ent);
+			ent = NULL;
+		}
 	}
 	return ent;
 }
@@ -520,7 +527,10 @@ struct proc_dir_entry *proc_mkdir(const char *name, struct proc_dir_entry *paren
 		ent->proc_fops = &proc_dir_operations;
 		ent->proc_iops = &proc_dir_inode_operations;
 
-		proc_register(parent, ent);
+		if (proc_register(parent, ent) < 0) {
+			kfree(ent);
+			ent = NULL;
+		}
 	}
 	return ent;
 }
@@ -549,7 +559,10 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
 			ent->proc_fops = &proc_dir_operations;
 			ent->proc_iops = &proc_dir_inode_operations;
 		}
-		proc_register(parent, ent);
+		if (proc_register(parent, ent) < 0) {
+			kfree(ent);
+			ent = NULL;
+		}
 	}
 	return ent;
 }

include/linux/pci.h

@@ -195,6 +195,7 @@
 #define  PCI_CAP_ID_SLOTID	0x04	/* Slot Identification */
 #define  PCI_CAP_ID_MSI		0x05	/* Message Signalled Interrupts */
 #define  PCI_CAP_ID_CHSWP	0x06	/* CompactPCI HotSwap */
+#define  PCI_CAP_ID_PCIX	0x07	/* PCI-X */
 #define PCI_CAP_LIST_NEXT	1	/* Next capability in the list */
 #define PCI_CAP_FLAGS		2	/* Capability defined flags (16 bits) */
 #define PCI_CAP_SIZEOF		4
@@ -251,6 +252,13 @@
 #define  PCI_AGP_COMMAND_RATE1	0x0001	/* Use 1x rate */
 #define PCI_AGP_SIZEOF		12
 
+/* Vital Product Data */
+
+#define PCI_VPD_ADDR		2	/* Address to access (15 bits!) */
+#define  PCI_VPD_ADDR_MASK	0x7fff	/* Address mask */
+#define  PCI_VPD_ADDR_F		0x8000	/* Write 0, 1 indicates completion */
+#define PCI_VPD_DATA		4	/* 32-bits of data returned here */
+
 /* Slot Identification */
 
 #define PCI_SID_ESR		2	/* Expansion Slot Register */
@@ -271,6 +279,37 @@
 #define PCI_MSI_DATA_32		8	/* 16 bits of data for 32-bit devices */
 #define PCI_MSI_DATA_64		12	/* 16 bits of data for 64-bit devices */
 
+/* CompactPCI Hotswap Register */
+
+#define PCI_CHSWP_CSR		2	/* Control and Status Register */
+#define  PCI_CHSWP_DHA		0x01	/* Device Hiding Arm */
+#define  PCI_CHSWP_EIM		0x02	/* ENUM# Signal Mask */
+#define  PCI_CHSWP_PIE		0x04	/* Pending Insert or Extract */
+#define  PCI_CHSWP_LOO		0x08	/* LED On / Off */
+#define  PCI_CHSWP_PI		0x30	/* Programming Interface */
+#define  PCI_CHSWP_EXT		0x40	/* ENUM# status - extraction */
+#define  PCI_CHSWP_INS		0x80	/* ENUM# status - insertion */
+
+/* PCI-X registers */
+
+#define PCI_X_CMD		2	/* Modes & Features */
+#define  PCI_X_CMD_DPERR_E	0x0001	/* Data Parity Error Recovery Enable */
+#define  PCI_X_CMD_ERO		0x0002	/* Enable Relaxed Ordering */
+#define  PCI_X_CMD_MAX_READ	0x000c	/* Max Memory Read Byte Count */
+#define  PCI_X_CMD_MAX_SPLIT	0x0070	/* Max Outstanding Split Transactions */
+#define PCI_X_DEVFN		4	/* A copy of devfn. */
+#define PCI_X_BUSNR		5	/* Bus segment number */
+#define PCI_X_STATUS		6	/* PCI-X capabilities */
+#define  PCI_X_STATUS_64BIT	0x0001	/* 64-bit device */
+#define  PCI_X_STATUS_133MHZ	0x0002	/* 133 MHz capable */
+#define  PCI_X_STATUS_SPL_DISC	0x0004	/* Split Completion Discarded */
+#define  PCI_X_STATUS_UNX_SPL	0x0008	/* Unexpected Split Completion */
+#define  PCI_X_STATUS_COMPLEX	0x0010	/* Device Complexity */
+#define  PCI_X_STATUS_MAX_READ	0x0060	/* Designed Maximum Memory Read Count */
+#define  PCI_X_STATUS_MAX_SPLIT	0x0380	/* Design Max Outstanding Split Trans */
+#define  PCI_X_STATUS_MAX_CUM	0x1c00	/* Designed Max Cumulative Read Size */
+#define  PCI_X_STATUS_SPL_ERR	0x2000	/* Rcvd Split Completion Error Msg */
+
 /* Include the ID list */
 
 #include <linux/pci_ids.h>