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PCI: Only check the HT capability bits in mpic.c

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Only compare the exact HT capability bits against HT_CAPTYPE_IRQ,
this is a little paranoid, but doesn't hurt.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Ellerman 2006-11-22 18:26:22 +11:00 committed by Greg Kroah-Hartman
parent 7a380507c4
commit beb7cc8238
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/mpic.c
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@ -390,7 +390,7 @@ static void __init mpic_scan_ht_pic(struct mpic *mpic, u8 __iomem *devbase,
u8 id = readb(devbase + pos + PCI_CAP_LIST_ID);
if (id == PCI_CAP_ID_HT) {
id = readb(devbase + pos + 3);
if (id == HT_CAPTYPE_IRQ)
if ((id & HT_5BIT_CAP_MASK) == HT_CAPTYPE_IRQ)
break;
}
}