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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/pata_octeon_cf.c | |
| parent | libata: add missing NULL pointer check to ata_eh_reset() (diff) | |
| download | linux-dev-c9abde12d6debe5b97f36fb43cf188c1b9cd477f.tar.xz linux-dev-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/pata_octeon_cf.c')
| -rw-r--r-- | drivers/ata/pata_octeon_cf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c index 8d9343accf3c..abdd19fe990a 100644 --- a/drivers/ata/pata_octeon_cf.c +++ b/drivers/ata/pata_octeon_cf.c @@ -653,7 +653,8 @@ static irqreturn_t octeon_cf_interrupt(int irq, void *dev_instance) ap = host->ports[i]; ocd = ap->dev->platform_data; - if (!ap || (ap->flags & ATA_FLAG_DISABLED)) + + if (ap->flags & ATA_FLAG_DISABLED) continue; ocd = ap->dev->platform_data; |