x86: Remove superfluous NULL pointer check in destroy_irq()

This takes care of the following entry from Dan's list:

  arch/x86/kernel/apic/io_apic.c +3241 destroy_irq(11) warning: variable derefenced before check 'desc'

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Eugene Teo <eteo@redhat.com>
Cc: Julia Lawall <julia@diku.dk>
LKML-Reference: <200907302321.19086.bzolnier@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 2 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index cf51b0b58c56..7e92a9212fd7 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -3185,8 +3185,7 @@ void destroy_irq(unsigned int irq)
         cfg = desc->chip_data;
         dynamic_irq_cleanup(irq);
         /* connect back irq_cfg */
-        if (desc)
-                desc->chip_data = cfg;
+        desc->chip_data = cfg;
 
         free_irte(irq);
         spin_lock_irqsave(&vector_lock, flags);