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authorJiang Liu <jiang.liu@linux.intel.com>2015-06-20 11:50:50 +0200
committerThomas Gleixner <tglx@linutronix.de>2015-06-20 12:00:58 +0200
commitbafac298fb20e9ae1305c710d4fd8d20c5911afa (patch)
treed77c6c28975e3c673162563b921ad75f50360b74 /arch/x86/kernel/hpet.c
parentgenirq: Prevent crash in irq_move_irq() (diff)
downloadlinux-bafac298fb20e9ae1305c710d4fd8d20c5911afa.tar.xz
linux-bafac298fb20e9ae1305c710d4fd8d20c5911afa.zip
x86/hpet: Check for irq==0 when allocating hpet MSI interrupts
irq == 0 is not a valid irq for a irqdomain MSI allocation, but hpet code checks only for negative return values. Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Borislav Petkov <bp@alien8.de> Link: http://lkml.kernel.org/r/558447AF.30703@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to '')
-rw-r--r--arch/x86/kernel/hpet.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index e2449cf38b06..c47aab35a17e 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -578,7 +578,7 @@ static void hpet_msi_capability_lookup(unsigned int start_timer)
continue;
irq = hpet_assign_irq(hpet_domain, hdev, hdev->num);
- if (irq < 0)
+ if (irq <= 0)
continue;
sprintf(hdev->name, "hpet%d", i);