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scsi: ncr5380: Resolve various static checker warnings

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Avoid various warnings from "make C=1" by annotating a couple of
unlock-then-lock sequences, replacing a zero with NULL and correcting
some type casts.

Also avoid a warning from "make W=1" by adding braces.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Finn Thain
2017-01-15 18:50:57 -05:00
committed by Martin K. Petersen
parent 14d739f640
commit 4ab2a7878f
3 changed files with 9 additions and 6 deletions
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5
drivers/scsi/NCR5380.c
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@@ -591,8 +591,9 @@ static inline void maybe_release_dma_irq(struct Scsi_Host *instance)
list_empty(&hostdata->unissued) &&
list_empty(&hostdata->autosense) &&
!hostdata->connected &&
!hostdata->selecting)
!hostdata->selecting) {
NCR5380_release_dma_irq(instance);
}
}
/**
@@ -931,6 +932,7 @@ static irqreturn_t __maybe_unused NCR5380_intr(int irq, void *dev_id)
static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *instance,
struct scsi_cmnd *cmd)
__releases(&hostdata->lock) __acquires(&hostdata->lock)
{
struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char tmp[3], phase;
@@ -1623,6 +1625,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
*/
static void NCR5380_information_transfer(struct Scsi_Host *instance)
__releases(&hostdata->lock) __acquires(&hostdata->lock)
{
struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char msgout = NOP;