Re: [PATCH] drm/i915: Silence smatch for cmdparser

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Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:

> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:808:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:811:23: error: not an lvalue
> drivers/gpu/drm/i915/i915_cmd_parser.c:814:23: error: not an lvalue
>
> If we move the shift into each case not only do we kill the warning from
> smatch, but we shrink the code slightly:
>
>    text	   data	    bss	    dec	    hex	filename
> 1267906	  20587	   3168	1291661	 13b58d	before
> 1267890	  20587	   3168	1291645	 13b57d	after
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx>

Reviewed-by: Gabriel Krisman Bertazi <krisman@xxxxxxxxxxxxxxx>

-- 
Gabriel Krisman Bertazi
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