drm/i915/selftests: Handle a potential failure of intel_ring_begin

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Silence smatch over:

drivers/gpu/drm/i915/selftests/intel_workarounds.c:58 read_nonprivs() error: 'cs' dereferencing possible ERR_PTR()

by handling a potential (but unlikely) failure of intel_ring_begin.

Fixes: f4ecfbfc32 ("drm/i915: Check whitelist registers across resets")
Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1523915821-30624-1-git-send-email-oscar.mateo@intel.com

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Oscar Mateo 2018-04-16 14:57:01 -07:00 • committed by Chris Wilson

parent 9f172f6fbd

commit 94f8dfc6cd

1 changed files with 7 additions and 0 deletions

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drivers/gpu/drm/i915/selftests/intel_workarounds.c

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