From: Anton Vorontsov Date: Mon, 6 Oct 2008 07:26:54 +0000 (+0000) Subject: powerpc: Fix no interrupt handling in pata_of_platform X-Git-Tag: v2.6.28-rc1~569^2~34 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=4538d0ca71b4f8991c4c0f433d7d17805738326e;p=linux-2.6-omap-h63xx.git powerpc: Fix no interrupt handling in pata_of_platform When no interrupt is specified the pata_of_platform fills the irq_res resource with -1, which is wrong to do for two reasons: 1. By definition, 'no irq' should be IRQ 0, not some negative integer; 2. pata_platform checks for irq_res.start > 0, but since irq_res.start is unsigned type, the check will be true for `-1'. Reported-by: Steven A. Falco Signed-off-by: Anton Vorontsov Signed-off-by: Benjamin Herrenschmidt --- diff --git a/drivers/ata/pata_of_platform.c b/drivers/ata/pata_of_platform.c index 408da30594c..1f18ad9e4fe 100644 --- a/drivers/ata/pata_of_platform.c +++ b/drivers/ata/pata_of_platform.c @@ -52,7 +52,7 @@ static int __devinit pata_of_platform_probe(struct of_device *ofdev, ret = of_irq_to_resource(dn, 0, &irq_res); if (ret == NO_IRQ) - irq_res.start = irq_res.end = -1; + irq_res.start = irq_res.end = 0; else irq_res.flags = 0;