[SCSI] aha152x, eata, u14-34f: minor irq handler cleanups
- remove pointless casts from void*
- remove needless references to 'irq' function argument, when that
information is already stored somewhere in a driver-private struct.
- where the 'irq' function argument is known never to be used, rename
it to 'dummy' to make this more obvious
- remove always-false tests for dev_id==NULL
- remove always-true tests for 'irq == host_struct->irq'
- replace per-irq lookup functions and tables with a direct reference
to data object obtained via 'dev_id' function argument, passed from
request_irq()
This change's main purpose is to prepare for the patchset in
jgarzik/misc-2.6.git#irq-remove, that explores removal of the
never-used 'irq' argument in each interrupt handler.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index 6ccdc96c..a09b2d3 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -1432,15 +1432,10 @@
*/
static irqreturn_t intr(int irqno, void *dev_id)
{
- struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
+ struct Scsi_Host *shpnt = dev_id;
unsigned long flags;
unsigned char rev, dmacntrl0;
- if (!shpnt) {
- printk(KERN_ERR "aha152x: catched interrupt %d for unknown controller.\n", irqno);
- return IRQ_NONE;
- }
-
/*
* Read a couple of registers that are known to not be all 1's. If
* we read all 1's (-1), that means that either: