On Fri, Mar 15, 2019 at 04:39:33PM +0000, Chris Wilson wrote:
> ffs() is 1-indexed, but we want to use it as an index into an array, so
> use __ffs() instead.
>
> Fixes: eb8d0f5af4ec ("drm/i915: Remove GPU reset dependence on struct_mutex")
> Signed-off-by: Chris Wilson <[email protected]>
> Cc: Mika Kuoppala <[email protected]>
Reviewed-by: Rodrigo Vivi <[email protected]>
> ---
> drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
> b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 3d8020888604..26bac517e383 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -1656,7 +1656,7 @@ error_msg(struct i915_gpu_state *error, unsigned long
> engines, const char *msg)
> i915_error_generate_code(error, engines));
> if (engines) {
> /* Just show the first executing process, more is confusing */
> - i = ffs(engines);
> + i = __ffs(engines);
> len += scnprintf(error->error_msg + len,
> sizeof(error->error_msg) - len,
> ", in %s [%d]",
> --
> 2.20.1
>
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