Various drivers' irq handlers: kill dead code, needless casts
- Eliminate casts to/from void*
- Eliminate checks for conditions that never occur. These typically
fall into two classes:
1) Checking for 'dev_id == NULL', then it is never called with
NULL as an argument.
2) Checking for invalid irq number, when the only caller (the
system) guarantees the irq handler is called with the proper
'irq' number argument.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/scsi/NCR53c406a.c b/drivers/scsi/NCR53c406a.c
index 3896278..d461381 100644
--- a/drivers/scsi/NCR53c406a.c
+++ b/drivers/scsi/NCR53c406a.c
@@ -168,7 +168,7 @@
};
/* Static function prototypes */
-static void NCR53c406a_intr(int, void *);
+static void NCR53c406a_intr(void *);
static irqreturn_t do_NCR53c406a_intr(int, void *);
static void chip_init(void);
static void calc_port_addr(void);
@@ -685,7 +685,7 @@
return;
}
- NCR53c406a_intr(0, NULL, NULL);
+ NCR53c406a_intr(NULL);
}
#endif
@@ -767,12 +767,12 @@
struct Scsi_Host *dev = dev_id;
spin_lock_irqsave(dev->host_lock, flags);
- NCR53c406a_intr(0, dev_id);
+ NCR53c406a_intr(dev_id);
spin_unlock_irqrestore(dev->host_lock, flags);
return IRQ_HANDLED;
}
-static void NCR53c406a_intr(int unused, void *dev_id)
+static void NCR53c406a_intr(void *dev_id)
{
DEB(unsigned char fifo_size;
)
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c
index e04c2bc..a0d1cee 100644
--- a/drivers/scsi/aha152x.c
+++ b/drivers/scsi/aha152x.c
@@ -759,12 +759,7 @@
static irqreturn_t swintr(int irqno, void *dev_id)
{
- struct Scsi_Host *shpnt = (struct Scsi_Host *)dev_id;
-
- if (!shpnt) {
- printk(KERN_ERR "aha152x: catched software interrupt %d for unknown controller.\n", irqno);
- return IRQ_NONE;
- }
+ struct Scsi_Host *shpnt = dev_id;
HOSTDATA(shpnt)->swint++;
diff --git a/drivers/scsi/aic7xxx_old.c b/drivers/scsi/aic7xxx_old.c
index 7f0adf9..bcd7fff 100644
--- a/drivers/scsi/aic7xxx_old.c
+++ b/drivers/scsi/aic7xxx_old.c
@@ -6345,12 +6345,12 @@
* SCSI controller interrupt handler.
*-F*************************************************************************/
static void
-aic7xxx_isr(int irq, void *dev_id)
+aic7xxx_isr(void *dev_id)
{
struct aic7xxx_host *p;
unsigned char intstat;
- p = (struct aic7xxx_host *)dev_id;
+ p = dev_id;
/*
* Just a few sanity checks. Make sure that we have an int pending.
@@ -6489,7 +6489,7 @@
p->flags |= AHC_IN_ISR;
do
{
- aic7xxx_isr(irq, dev_id);
+ aic7xxx_isr(dev_id);
} while ( (aic_inb(p, INTSTAT) & INT_PEND) );
aic7xxx_done_cmds_complete(p);
aic7xxx_run_waiting_queues(p);
@@ -10377,7 +10377,7 @@
hscb = scb->hscb;
- aic7xxx_isr(p->irq, (void *)p);
+ aic7xxx_isr(p);
aic7xxx_done_cmds_complete(p);
/* If the command was already complete or just completed, then we didn't
* do a reset, return FAILED */
@@ -10608,7 +10608,7 @@
else
return FAILED;
- aic7xxx_isr(p->irq, (void *)p);
+ aic7xxx_isr(p);
aic7xxx_done_cmds_complete(p);
/* If the command was already complete or just completed, then we didn't
* do a reset, return FAILED */
@@ -10863,7 +10863,7 @@
while((aic_inb(p, INTSTAT) & INT_PEND) && !(p->flags & AHC_IN_ISR))
{
- aic7xxx_isr(p->irq, p);
+ aic7xxx_isr(p);
pause_sequencer(p);
}
aic7xxx_done_cmds_complete(p);
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 81e3ee5..23f5e41 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -1815,7 +1815,7 @@
static irqreturn_t dc395x_interrupt(int irq, void *dev_id)
{
- struct AdapterCtlBlk *acb = (struct AdapterCtlBlk *)dev_id;
+ struct AdapterCtlBlk *acb = dev_id;
u16 scsi_status;
u8 dma_status;
irqreturn_t handled = IRQ_NONE;
diff --git a/drivers/scsi/qlogicfas408.c b/drivers/scsi/qlogicfas408.c
index 1a7de3b..e072535 100644
--- a/drivers/scsi/qlogicfas408.c
+++ b/drivers/scsi/qlogicfas408.c
@@ -405,10 +405,10 @@
* Interrupt handler
*/
-static void ql_ihandl(int irq, void *dev_id)
+static void ql_ihandl(void *dev_id)
{
Scsi_Cmnd *icmd;
- struct Scsi_Host *host = (struct Scsi_Host *)dev_id;
+ struct Scsi_Host *host = dev_id;
struct qlogicfas408_priv *priv = get_priv_by_host(host);
int qbase = priv->qbase;
REG0;
@@ -438,7 +438,7 @@
struct Scsi_Host *host = dev_id;
spin_lock_irqsave(host->host_lock, flags);
- ql_ihandl(irq, dev_id);
+ ql_ihandl(dev_id);
spin_unlock_irqrestore(host->host_lock, flags);
return IRQ_HANDLED;
}
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index 0f0ac92..d03aa6c 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -700,9 +700,9 @@
static irqreturn_t __inline__
-DC390_Interrupt(int irq, void *dev_id)
+DC390_Interrupt(void *dev_id)
{
- struct dc390_acb *pACB = (struct dc390_acb*)dev_id;
+ struct dc390_acb *pACB = dev_id;
struct dc390_dcb *pDCB;
struct dc390_srb *pSRB;
u8 sstatus=0;
@@ -811,12 +811,12 @@
return IRQ_HANDLED;
}
-static irqreturn_t do_DC390_Interrupt( int irq, void *dev_id)
+static irqreturn_t do_DC390_Interrupt(int irq, void *dev_id)
{
irqreturn_t ret;
DEBUG1(printk (KERN_INFO "DC390: Irq (%i) caught: ", irq));
/* Locking is done in DC390_Interrupt */
- ret = DC390_Interrupt(irq, dev_id);
+ ret = DC390_Interrupt(dev_id);
DEBUG1(printk (".. IRQ returned\n"));
return ret;
}
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c
index 107f0fc..56906ab 100644
--- a/drivers/scsi/ultrastor.c
+++ b/drivers/scsi/ultrastor.c
@@ -287,7 +287,7 @@
};
#endif
-static void ultrastor_interrupt(int, void *);
+static void ultrastor_interrupt(void *);
static irqreturn_t do_ultrastor_interrupt(int, void *);
static inline void build_sg_list(struct mscp *, struct scsi_cmnd *SCpnt);
@@ -893,7 +893,7 @@
spin_lock_irqsave(host->host_lock, flags);
/* FIXME: Ewww... need to think about passing host around properly */
- ultrastor_interrupt(0, NULL);
+ ultrastor_interrupt(NULL);
spin_unlock_irqrestore(host->host_lock, flags);
return SUCCESS;
}
@@ -1039,7 +1039,7 @@
return 0;
}
-static void ultrastor_interrupt(int irq, void *dev_id)
+static void ultrastor_interrupt(void *dev_id)
{
unsigned int status;
#if ULTRASTOR_MAX_CMDS > 1
@@ -1177,7 +1177,7 @@
struct Scsi_Host *dev = dev_id;
spin_lock_irqsave(dev->host_lock, flags);
- ultrastor_interrupt(irq, dev_id);
+ ultrastor_interrupt(dev_id);
spin_unlock_irqrestore(dev->host_lock, flags);
return IRQ_HANDLED;
}