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drm: atmel-hlcdc: fix a NULL check 

If kmalloc() returned NULL we would end up dereferencing "state" a
couple lines later.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Dan Carpenter 2016-04-25 12:04:54 +03:00 committed by Boris Brezillon
parent c2e4c99444
commit 58a2ab3af7
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
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@ -414,8 +414,9 @@ atmel_hlcdc_crtc_duplicate_state(struct drm_crtc *crtc)
return NULL;
state = kmalloc(sizeof(*state), GFP_KERNEL);
if (state)
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
if (!state)
return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
cur = drm_crtc_state_to_atmel_hlcdc_crtc_state(crtc->state);
state->output_mode = cur->output_mode;