Wei Yongjun,
On Fri, Dec 05, 2014 at 08:55:59AM +0800, weiyj...@163.com wrote:
> From: Wei Yongjun <yongjun_...@trendmicro.com.cn>
>
> Add the missing unlock before return from function i915_gem_init_hw()
> in the error handling case.
>
> Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.com.cn>
> ---
> drivers/gpu/drm/i915/i915_gem.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index d2ba315..3eeb2d0 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -4879,8 +4879,10 @@ i915_gem_init_hw(struct drm_device *dev)
> i915_gem_init_swizzling(dev);
>
> ret = dev_priv->gt.init_rings(dev);
> - if (ret)
> + if (ret) {
> + mutex_unlock(&dev->struct_mutex);
> return ret;
> + }
>
There are other places in i915_gem_init_hw() where it returns without
unlocking the mutex. Why is it only necessary here and not any of the
other places?
> for (i = 0; i < NUM_L3_SLICES(dev); i++)
> i915_gem_l3_remap(&dev_priv->ring[RCS], i);
>
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--
- Jeremiah Mahler
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