Commit beb7cc82 authored by Michael Ellerman's avatar Michael Ellerman Committed by Greg Kroah-Hartman

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

Only compare the exact HT capability bits against HT_CAPTYPE_IRQ,
this is a little paranoid, but doesn't hurt.
Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7a380507
...@@ -390,7 +390,7 @@ static void __init mpic_scan_ht_pic(struct mpic *mpic, u8 __iomem *devbase, ...@@ -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); u8 id = readb(devbase + pos + PCI_CAP_LIST_ID);
if (id == PCI_CAP_ID_HT) { if (id == PCI_CAP_ID_HT) {
id = readb(devbase + pos + 3); id = readb(devbase + pos + 3);
if (id == HT_CAPTYPE_IRQ) if ((id & HT_5BIT_CAP_MASK) == HT_CAPTYPE_IRQ)
break; break;
} }
} }
......
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