From a8d9fbbd656f7100ab49705302b7798b61558ecd Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 4 Jul 2018 12:46:15 +0300 Subject: [PATCH 4855/5725] drm/amd/display: off by one in find_irq_source_info() 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: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)") Signed-off-by: Dan Carpenter Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/irq/irq_service.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/irq/irq_service.c b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c index dcdfa0f..604bea0 100644 --- a/drivers/gpu/drm/amd/display/dc/irq/irq_service.c +++ b/drivers/gpu/drm/amd/display/dc/irq/irq_service.c @@ -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]; -- 2.7.4