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| author | Jeff Garzik <jeff@garzik.org> | 2007-11-11 19:52:05 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2007-11-25 12:19:26 +0200 |
| commit | 1e641664301744f0d381de43ae1e12343e60b479 (patch) | |
| tree | 974c977e1dd9787c943d16b771372f08b48f346d /drivers/scsi/dtc.c | |
| parent | 86e8dfc5603ed76917eed0a9dd9e85a1e1a8b162 (diff) | |
| download | lwn-1e641664301744f0d381de43ae1e12343e60b479.tar.gz lwn-1e641664301744f0d381de43ae1e12343e60b479.zip | |
[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>
Diffstat (limited to 'drivers/scsi/dtc.c')
| -rw-r--r-- | drivers/scsi/dtc.c | 5 |
1 files changed, 3 insertions, 2 deletions
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); |