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[PATCH] ahci: fix NULL pointer dereference detected by Coverity 

Fix NULL pointer dereference detected by the Coverity checker.  Kill
dev -> pdev -> dev conversion while at it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-03-11 12:47:54 +09:00 committed by Jeff Garzik
parent ed62178589
commit 6971ed1fbb
1 changed files with 4 additions and 10 deletions
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14
drivers/scsi/ahci.c
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@ -742,23 +742,17 @@ static irqreturn_t ahci_interrupt (int irq, void *dev_instance, struct pt_regs *
struct ata_queued_cmd *qc;
qc = ata_qc_from_tag(ap, ap->active_tag);
if (!ahci_host_intr(ap, qc))
if (ata_ratelimit()) {
struct pci_dev *pdev =
to_pci_dev(ap->host_set->dev);
dev_printk(KERN_WARNING, &pdev->dev,
if (ata_ratelimit())
dev_printk(KERN_WARNING, host_set->dev,
"unhandled interrupt on port %u\n",
i);
}
VPRINTK("port %u\n", i);
} else {
VPRINTK("port %u (no irq)\n", i);
if (ata_ratelimit()) {
struct pci_dev *pdev =
to_pci_dev(ap->host_set->dev);
dev_printk(KERN_WARNING, &pdev->dev,
if (ata_ratelimit())
dev_printk(KERN_WARNING, host_set->dev,
"interrupt on disabled port %u\n", i);
}
}
irq_ack |= (1 << i);