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drm/i915: Fix missing unlock on error in i915_ppgtt_info()

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Add the missing unlock before return from function i915_ppgtt_info()
in the error handling case.

Fixes: 1d2ac403ae3b(drm: Protect dev->filelist with its own mutex)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465861320-26221-1-git-send-email-weiyj_lk@163.com
(cherry picked from commit b021248690)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Wei Yongjun 2016-06-13 23:42:00 +00:00 committed by Jani Nikula
parent 6b9dc6a474
commit cab1032743
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/i915_debugfs.c
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@ -2365,16 +2365,16 @@ static int i915_ppgtt_info(struct seq_file *m, void *data)
task = get_pid_task(file->pid, PIDTYPE_PID);
if (!task) {
ret = -ESRCH;
goto out_put;
goto out_unlock;
}
seq_printf(m, "\nproc: %s\n", task->comm);
put_task_struct(task);
idr_for_each(&file_priv->context_idr, per_file_ctx,
(void *)(unsigned long)m);
}
out_unlock:
mutex_unlock(&dev->filelist_mutex);
out_put:
intel_runtime_pm_put(dev_priv);
mutex_unlock(&dev->struct_mutex);