x86, hpet: Fix bogus error check in hpet_assign_irq()

commit 021989622810b02aab4b24f91e1f5ada2b654579 upstream.

create_irq() returns -1 if the interrupt allocation failed, but the
code checks for irq == 0.

Use create_irq_nr() instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Venkatesh Pallipadi <venki@google.com>
LKML-Reference: <alpine.LFD.2.00.1009282310360.2416@localhost6.localdomain6>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 7cd18862f0411ad87ff494a4df8f65fa6197009f..917c66fca56dc4f887cb945680b1bbbb4d5a56b4 100644 (file)
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -507,7 +507,7 @@ static int hpet_assign_irq(struct hpet_dev *dev)
 {
        unsigned int irq;
 
-       irq = create_irq();
+       irq = create_irq_nr(0, -1);
        if (!irq)
                return -EINVAL;