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authorJeff Garzik <jeff@garzik.org>2007-11-11 19:52:05 -0500
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2007-11-25 12:19:26 +0200
commit1e641664301744f0d381de43ae1e12343e60b479 (patch)
tree974c977e1dd9787c943d16b771372f08b48f346d
parent86e8dfc5603ed76917eed0a9dd9e85a1e1a8b162 (diff)
[SCSI] NCR5380: Fix bugs and canonicalize irq handler usage
* Always pass the same value to free_irq() that we pass to request_irq(). This fixes several bugs. * Always call NCR5380_intr() with 'irq' and 'dev_id' arguments. Note, scsi_falcon_intr() is the only case now where dev_id is not the scsi_host. * Always pass Scsi_Host to request_irq(). For most cases, the drivers already did so, and I merely neated the source code line. In other cases, either NULL or a non-sensical value was passed, verified to be unused, then changed to be Scsi_Host in anticipation of the future. In addition to the bugs fixes, this change makes the interface usage consistent, which in turn enables the possibility of directly referencing Scsi_Host from all NCR5380_intr() invocations. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
-rw-r--r--drivers/scsi/atari_scsi.c10
-rw-r--r--drivers/scsi/dtc.c5
-rw-r--r--drivers/scsi/g_NCR5380.c5
-rw-r--r--drivers/scsi/mac_scsi.c4
-rw-r--r--drivers/scsi/pas16.c5
-rw-r--r--drivers/scsi/sun3_scsi.c4
-rw-r--r--drivers/scsi/sun3_scsi_vme.c4
-rw-r--r--drivers/scsi/t128.c5
8 files changed, 23 insertions, 19 deletions
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index 6f8403b82ba1..f5732d8f67fe 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -393,7 +393,7 @@ static irqreturn_t scsi_tt_intr(int irq, void *dummy)
#endif /* REAL_DMA */
- NCR5380_intr(0, 0);
+ NCR5380_intr(irq, dummy);
#if 0
/* To be sure the int is not masked */
@@ -458,7 +458,7 @@ static irqreturn_t scsi_falcon_intr(int irq, void *dummy)
#endif /* REAL_DMA */
- NCR5380_intr(0, 0);
+ NCR5380_intr(irq, dummy);
return IRQ_HANDLED;
}
@@ -684,7 +684,7 @@ int atari_scsi_detect(struct scsi_host_template *host)
* interrupt after having cleared the pending flag for the DMA
* interrupt. */
if (request_irq(IRQ_TT_MFP_SCSI, scsi_tt_intr, IRQ_TYPE_SLOW,
- "SCSI NCR5380", scsi_tt_intr)) {
+ "SCSI NCR5380", instance)) {
printk(KERN_ERR "atari_scsi_detect: cannot allocate irq %d, aborting",IRQ_TT_MFP_SCSI);
scsi_unregister(atari_scsi_host);
atari_stram_free(atari_dma_buffer);
@@ -701,7 +701,7 @@ int atari_scsi_detect(struct scsi_host_template *host)
IRQ_TYPE_PRIO, "Hades DMA emulator",
hades_dma_emulator)) {
printk(KERN_ERR "atari_scsi_detect: cannot allocate irq %d, aborting (MACH_IS_HADES)",IRQ_AUTO_2);
- free_irq(IRQ_TT_MFP_SCSI, scsi_tt_intr);
+ free_irq(IRQ_TT_MFP_SCSI, instance);
scsi_unregister(atari_scsi_host);
atari_stram_free(atari_dma_buffer);
atari_dma_buffer = 0;
@@ -761,7 +761,7 @@ int atari_scsi_detect(struct scsi_host_template *host)
int atari_scsi_release(struct Scsi_Host *sh)
{
if (IS_A_TT())
- free_irq(IRQ_TT_MFP_SCSI, scsi_tt_intr);
+ free_irq(IRQ_TT_MFP_SCSI, sh);
if (atari_dma_buffer)
atari_stram_free(atari_dma_buffer);
return 1;
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c
index 2596165096d3..c2677ba29c74 100644
--- a/drivers/scsi/dtc.c
+++ b/drivers/scsi/dtc.c
@@ -277,7 +277,8 @@ found:
/* With interrupts enabled, it will sometimes hang when doing heavy
* reads. So better not enable them until I finger it out. */
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, dtc_intr, IRQF_DISABLED, "dtc", instance)) {
+ if (request_irq(instance->irq, dtc_intr, IRQF_DISABLED,
+ "dtc", instance)) {
printk(KERN_ERR "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
}
@@ -459,7 +460,7 @@ static int dtc_release(struct Scsi_Host *shost)
NCR5380_local_declare();
NCR5380_setup(shost);
if (shost->irq)
- free_irq(shost->irq, NULL);
+ free_irq(shost->irq, shost);
NCR5380_exit(shost);
if (shost->io_port && shost->n_io_port)
release_region(shost->io_port, shost->n_io_port);
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 607336f56d55..75585a52c88b 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -460,7 +460,8 @@ int __init generic_NCR5380_detect(struct scsi_host_template * tpnt)
instance->irq = NCR5380_probe_irq(instance, 0xffff);
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, generic_NCR5380_intr, IRQF_DISABLED, "NCR5380", instance)) {
+ if (request_irq(instance->irq, generic_NCR5380_intr,
+ IRQF_DISABLED, "NCR5380", instance)) {
printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
}
@@ -513,7 +514,7 @@ int generic_NCR5380_release_resources(struct Scsi_Host *instance)
NCR5380_setup(instance);
if (instance->irq != SCSI_IRQ_NONE)
- free_irq(instance->irq, NULL);
+ free_irq(instance->irq, instance);
NCR5380_exit(instance);
#ifndef CONFIG_SCSI_G_NCR5380_MEM
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index abe2bda6ac37..3b09ab21d701 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -303,7 +303,7 @@ int macscsi_detect(struct scsi_host_template * tpnt)
if (instance->irq != SCSI_IRQ_NONE)
if (request_irq(instance->irq, NCR5380_intr, IRQ_FLG_SLOW,
- "ncr5380", instance)) {
+ "ncr5380", instance)) {
printk(KERN_WARNING "scsi%d: IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
@@ -326,7 +326,7 @@ int macscsi_detect(struct scsi_host_template * tpnt)
int macscsi_release (struct Scsi_Host *shpnt)
{
if (shpnt->irq != SCSI_IRQ_NONE)
- free_irq (shpnt->irq, NCR5380_intr);
+ free_irq(shpnt->irq, shpnt);
NCR5380_exit(shpnt);
return 0;
diff --git a/drivers/scsi/pas16.c b/drivers/scsi/pas16.c
index ee5965659971..f2018b46f494 100644
--- a/drivers/scsi/pas16.c
+++ b/drivers/scsi/pas16.c
@@ -453,7 +453,8 @@ int __init pas16_detect(struct scsi_host_template * tpnt)
instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, pas16_intr, IRQF_DISABLED, "pas16", instance)) {
+ if (request_irq(instance->irq, pas16_intr, IRQF_DISABLED,
+ "pas16", instance)) {
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
@@ -604,7 +605,7 @@ static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src
static int pas16_release(struct Scsi_Host *shost)
{
if (shost->irq)
- free_irq(shost->irq, NULL);
+ free_irq(shost->irq, shost);
NCR5380_exit(shost);
if (shost->dma_channel != 0xff)
free_dma(shost->dma_channel);
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c
index 5e46d842c6f9..e606cf0a2eb7 100644
--- a/drivers/scsi/sun3_scsi.c
+++ b/drivers/scsi/sun3_scsi.c
@@ -268,7 +268,7 @@ int sun3scsi_detect(struct scsi_host_template * tpnt)
((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0;
if (request_irq(instance->irq, scsi_sun3_intr,
- 0, "Sun3SCSI-5380", NULL)) {
+ 0, "Sun3SCSI-5380", instance)) {
#ifndef REAL_DMA
printk("scsi%d: IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
@@ -310,7 +310,7 @@ int sun3scsi_detect(struct scsi_host_template * tpnt)
int sun3scsi_release (struct Scsi_Host *shpnt)
{
if (shpnt->irq != SCSI_IRQ_NONE)
- free_irq (shpnt->irq, NULL);
+ free_irq(shpnt->irq, shpnt);
iounmap((void *)sun3_scsi_regp);
diff --git a/drivers/scsi/sun3_scsi_vme.c b/drivers/scsi/sun3_scsi_vme.c
index 7cb4a31453e6..02d9727f017a 100644
--- a/drivers/scsi/sun3_scsi_vme.c
+++ b/drivers/scsi/sun3_scsi_vme.c
@@ -230,7 +230,7 @@ static int sun3scsi_detect(struct scsi_host_template * tpnt)
((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0;
if (request_irq(instance->irq, scsi_sun3_intr,
- 0, "Sun3SCSI-5380VME", NULL)) {
+ 0, "Sun3SCSI-5380VME", instance)) {
#ifndef REAL_DMA
printk("scsi%d: IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
@@ -279,7 +279,7 @@ static int sun3scsi_detect(struct scsi_host_template * tpnt)
int sun3scsi_release (struct Scsi_Host *shpnt)
{
if (shpnt->irq != SCSI_IRQ_NONE)
- free_irq (shpnt->irq, NULL);
+ free_irq(shpnt->irq, shpnt);
iounmap((void *)sun3_scsi_regp);
diff --git a/drivers/scsi/t128.c b/drivers/scsi/t128.c
index 248d60b8d899..041eaaace2c3 100644
--- a/drivers/scsi/t128.c
+++ b/drivers/scsi/t128.c
@@ -259,7 +259,8 @@ found:
instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
if (instance->irq != SCSI_IRQ_NONE)
- if (request_irq(instance->irq, t128_intr, IRQF_DISABLED, "t128", instance)) {
+ if (request_irq(instance->irq, t128_intr, IRQF_DISABLED, "t128",
+ instance)) {
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
instance->irq = SCSI_IRQ_NONE;
@@ -295,7 +296,7 @@ static int t128_release(struct Scsi_Host *shost)
NCR5380_local_declare();
NCR5380_setup(shost);
if (shost->irq)
- free_irq(shost->irq, NULL);
+ free_irq(shost->irq, shost);
NCR5380_exit(shost);
if (shost->io_port && shost->n_io_port)
release_region(shost->io_port, shost->n_io_port);

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