From 2979d7e973464c00154fa4fe029de128de3e51db Mon Sep 17 00:00:00 2001 From: kbuild test robot Date: Fri, 13 Oct 2017 07:17:48 +0800 Subject: [PATCH] drm/amd/display: fix ifnullfree.cocci warnings drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:134:3-8: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:175:4-9: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. NULL check before some freeing functions is not needed. Based on checkpatch warning "kfree(NULL) is safe this check is probably not required" and kfreeaddr.cocci by Julia Lawall. Generated by: scripts/coccinelle/free/ifnullfree.cocci Fixes: f09cd1f46388 ("drm/amd/display: Use kernel alloc/free") Signed-off-by: Fengguang Wu Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c index ff9d36b5866e..80038e0e610f 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c +++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c @@ -130,8 +130,7 @@ failure_2: slot = service->busyness[index_of_id]; - if (slot) - kfree(slot); + kfree(slot); } failure_1: @@ -171,8 +170,7 @@ void dal_gpio_service_destroy( do { uint32_t *slot = (*ptr)->busyness[index_of_id]; - if (slot) - kfree(slot); + kfree(slot); ++index_of_id; } while (index_of_id < GPIO_ID_COUNT); -- 2.30.2