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drm/amd/display: off by one in find_irq_source_info()

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The ->info[] array has DAL_IRQ_SOURCES_NUMBER elements so this condition
should be >= instead of > or we could read one element beyond the end of
the array.

Fixes: 4562236b3b ("drm/amd/dc: Add dc display driver (v2)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dan Carpenter 2018-07-04 12:46:15 +03:00 committed by Alex Deucher
parent 20582319bc
commit 5d908944c5
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/irq/irq_service.c
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@ -78,7 +78,7 @@ const struct irq_source_info *find_irq_source_info(
struct irq_service *irq_service,
enum dc_irq_source source)
{
if (source > DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
if (source >= DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
return NULL;
return &irq_service->info[source];