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[SCSI] NCR5380: Fix bugs and canonicalize irq handler usage

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* 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>
This commit is contained in:
Jeff Garzik 2007-11-11 19:52:05 -05:00 committed by James Bottomley
parent 86e8dfc560
commit 1e64166430
8 changed files with 23 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/scsi/atari_scsi.c
View File

@ -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;

5
drivers/scsi/dtc.c
View File

@ -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);

5
drivers/scsi/g_NCR5380.c
View File

@ -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

4
drivers/scsi/mac_scsi.c
View File

@ -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;

5
drivers/scsi/pas16.c
View File

@ -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);

4
drivers/scsi/sun3_scsi.c
View File

@ -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);

4
drivers/scsi/sun3_scsi_vme.c
View File

@ -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);

5
drivers/scsi/t128.c
View File

@ -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);