From bafac298fb20e9ae1305c710d4fd8d20c5911afa Mon Sep 17 00:00:00 2001 From: Jiang Liu <jiang.liu@linux.intel.com> Date: Sat, 20 Jun 2015 11:50:50 +0200 Subject: [PATCH] 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> --- arch/x86/kernel/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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); -- GitLab