Commit 2d04f6b9 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  bio: fix memcpy corruption in bio_copy_user_iov()
  hd: fix locking
  mg_disk: fix CONFIG_LBD=y warning
  mg_disk: fix locking
parents 8b86bd7a 69838727
......@@ -509,7 +509,6 @@ static void write_intr(void)
if (i > 0) {
SET_HANDLER(&write_intr);
outsw(HD_DATA, req->buffer, 256);
local_irq_enable();
} else {
#if (HD_DELAY > 0)
last_req = read_timer();
......@@ -541,8 +540,7 @@ static void hd_times_out(unsigned long dummy)
if (!CURRENT)
return;
disable_irq(HD_IRQ);
local_irq_enable();
spin_lock_irq(hd_queue->queue_lock);
reset = 1;
name = CURRENT->rq_disk->disk_name;
printk("%s: timeout\n", name);
......@@ -552,9 +550,8 @@ static void hd_times_out(unsigned long dummy)
#endif
end_request(CURRENT, 0);
}
local_irq_disable();
hd_request();
enable_irq(HD_IRQ);
spin_unlock_irq(hd_queue->queue_lock);
}
static int do_special_op(struct hd_i_struct *disk, struct request *req)
......@@ -592,7 +589,6 @@ static void hd_request(void)
return;
repeat:
del_timer(&device_timer);
local_irq_enable();
req = CURRENT;
if (!req) {
......@@ -601,7 +597,6 @@ static void hd_request(void)
}
if (reset) {
local_irq_disable();
reset_hd();
return;
}
......@@ -660,9 +655,7 @@ static void hd_request(void)
static void do_hd_request(struct request_queue *q)
{
disable_irq(HD_IRQ);
hd_request();
enable_irq(HD_IRQ);
}
static int hd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
......@@ -684,12 +677,16 @@ static irqreturn_t hd_interrupt(int irq, void *dev_id)
{
void (*handler)(void) = do_hd;
spin_lock(hd_queue->queue_lock);
do_hd = NULL;
del_timer(&device_timer);
if (!handler)
handler = unexpected_hd_interrupt;
handler();
local_irq_enable();
spin_unlock(hd_queue->queue_lock);
return IRQ_HANDLED;
}
......
......@@ -79,7 +79,7 @@ static void mg_dump_status(const char *msg, unsigned int stat,
if (host->breq) {
req = elv_next_request(host->breq);
if (req)
printk(", sector=%ld", req->sector);
printk(", sector=%u", (u32)req->sector);
}
}
......@@ -160,11 +160,16 @@ static irqreturn_t mg_irq(int irq, void *dev_id)
struct mg_host *host = dev_id;
void (*handler)(struct mg_host *) = host->mg_do_intr;
host->mg_do_intr = 0;
spin_lock(&host->lock);
host->mg_do_intr = NULL;
del_timer(&host->timer);
if (!handler)
handler = mg_unexpected_intr;
handler(host);
spin_unlock(&host->lock);
return IRQ_HANDLED;
}
......@@ -319,7 +324,7 @@ static void mg_read(struct request *req)
remains = req->nr_sectors;
if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_RD, 0) !=
if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_RD, NULL) !=
MG_ERR_NONE)
mg_bad_rw_intr(host);
......@@ -363,7 +368,7 @@ static void mg_write(struct request *req)
remains = req->nr_sectors;
if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_WR, 0) !=
if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_WR, NULL) !=
MG_ERR_NONE) {
mg_bad_rw_intr(host);
return;
......@@ -521,9 +526,11 @@ void mg_times_out(unsigned long data)
char *name;
struct request *req;
spin_lock_irq(&host->lock);
req = elv_next_request(host->breq);
if (!req)
return;
goto out_unlock;
host->mg_do_intr = NULL;
......@@ -534,6 +541,8 @@ void mg_times_out(unsigned long data)
mg_bad_rw_intr(host);
mg_request(host->breq);
out_unlock:
spin_unlock_irq(&host->lock);
}
static void mg_request_poll(struct request_queue *q)
......
......@@ -817,6 +817,9 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
len += iov[i].iov_len;
}
if (offset)
nr_pages++;
bmd = bio_alloc_map_data(nr_pages, iov_count, gfp_mask);
if (!bmd)
return ERR_PTR(-ENOMEM);
......
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