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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-15 16:39:33 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-03-15 21:10:08 +0000 |
| commit | 9073e5b26743b8b675cc44a9c0c8f8c3d584e1c0 (patch) | |
| tree | a021675cac36501a2a6df97213608b8f9b4299b5 /drivers/gpu/drm/i915/i915_gpu_error.c | |
| parent | f19d90eed648d48b764abc3799f4cb9de4a4079f (diff) | |
| download | linux-9073e5b26743b8b675cc44a9c0c8f8c3d584e1c0.tar.bz2 | |
drm/i915: Fix off-by-one in reporting hanging process
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 <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190315163933.19352-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gpu_error.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gpu_error.c | 2 |
1 files changed, 1 insertions, 1 deletions
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]", |