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authorChristoph Hellwig <hch@lst.de>2014-07-14 09:34:54 +0200
committerChristoph Hellwig <hch@lst.de>2014-09-16 09:09:38 -0700
commited81d7741eddb690aa9d5c79945123db11ec7a0c (patch)
tree5682c2c01e65c17be13216d9e6fa991982ba0d25 /drivers/scsi/eata.c
parent6fe8c1dbefd63ef3988edb745d9eb81fc6d0513c (diff)
eata: remove driver_lock
port_detect is only called from the module_init routine and thus implicitly serialized, so remove the driver lock which was held over potentially sleeping function calls. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Arthur Marsh <arthur.marsh@internode.on.net> Tested-by: Arthur Marsh <arthur.marsh@internode.on.net> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
Diffstat (limited to 'drivers/scsi/eata.c')
-rw-r--r--drivers/scsi/eata.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c
index 813dd5c998e4..943ad3a19661 100644
--- a/drivers/scsi/eata.c
+++ b/drivers/scsi/eata.c
@@ -837,7 +837,6 @@ struct hostdata {
static struct Scsi_Host *sh[MAX_BOARDS];
static const char *driver_name = "EATA";
static char sha[MAX_BOARDS];
-static DEFINE_SPINLOCK(driver_lock);
/* Initialize num_boards so that ihdlr can work while detect is in progress */
static unsigned int num_boards = MAX_BOARDS;
@@ -1097,8 +1096,6 @@ static int port_detect(unsigned long port_base, unsigned int j,
goto fail;
}
- spin_lock_irq(&driver_lock);
-
if (do_dma(port_base, 0, READ_CONFIG_PIO)) {
#if defined(DEBUG_DETECT)
printk("%s: detect, do_dma failed at 0x%03lx.\n", name,
@@ -1264,10 +1261,7 @@ static int port_detect(unsigned long port_base, unsigned int j,
}
#endif
- spin_unlock_irq(&driver_lock);
sh[j] = shost = scsi_register(tpnt, sizeof(struct hostdata));
- spin_lock_irq(&driver_lock);
-
if (shost == NULL) {
printk("%s: unable to register host, detaching.\n", name);
goto freedma;
@@ -1344,8 +1338,6 @@ static int port_detect(unsigned long port_base, unsigned int j,
else
sprintf(dma_name, "DMA %u", dma_channel);
- spin_unlock_irq(&driver_lock);
-
for (i = 0; i < shost->can_queue; i++)
ha->cp[i].cp_dma_addr = pci_map_single(ha->pdev,
&ha->cp[i],
@@ -1438,7 +1430,6 @@ static int port_detect(unsigned long port_base, unsigned int j,
freeirq:
free_irq(irq, &sha[j]);
freelock:
- spin_unlock_irq(&driver_lock);
release_region(port_base, REGION_SIZE);
fail:
return 0;