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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-07-26 16:05:13 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-07-28 21:06:13 -0400 |
| commit | c9abde12d6debe5b97f36fb43cf188c1b9cd477f (patch) | |
| tree | 0bd6a455f9b21ade1cc5dc4a2eaab29a670ec175 /drivers/ata/sata_sil.c | |
| parent | 705d201414382b0966d7c903d738dfdb9380e4af (diff) | |
| download | linux-c9abde12d6debe5b97f36fb43cf188c1b9cd477f.tar.gz linux-c9abde12d6debe5b97f36fb43cf188c1b9cd477f.tar.bz2 linux-c9abde12d6debe5b97f36fb43cf188c1b9cd477f.zip | |
libata: remove superfluous NULL pointer checks
host->ports[] always contain pointers to valid port structures since
a "dummy port" structure is used in case if there is no physical port.
This patch takes care of two entries from Dan's list:
drivers/ata/sata_sil.c +535 sil_interrupt(13) warning: variable derefenced before check 'ap'
drivers/ata/sata_mv.c +2517 mv_unexpected_intr(6) warning: variable derefenced before check 'ap'
and of another needless NULL pointer check in pata_octeon_cf.c.
Reported-by: Dan Carpenter <error27@gmail.com>
Cc: corbet@lwn.net
Cc: eteo@redhat.com
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/sata_sil.c')
| -rw-r--r-- | drivers/ata/sata_sil.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c index 030ec079b184..35bd5cc7f285 100644 --- a/drivers/ata/sata_sil.c +++ b/drivers/ata/sata_sil.c @@ -532,7 +532,7 @@ static irqreturn_t sil_interrupt(int irq, void *dev_instance) struct ata_port *ap = host->ports[i]; u32 bmdma2 = readl(mmio_base + sil_port[ap->port_no].bmdma2); - if (unlikely(!ap || ap->flags & ATA_FLAG_DISABLED)) + if (unlikely(ap->flags & ATA_FLAG_DISABLED)) continue; /* turn off SATA_IRQ if not supported */ |