Re: [PATCH -next] drm/i915: fix error return code ininit_pipe_control()

[Chris Wilson]

On Tue, May 28, 2013 at 05:51:44PM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
> 
> Fix to return -ENOMEM in the kmap() error handling case
> instead of 0, as done elsewhere in this function.

kmap() can fail?

It is either translated to page_address() or kmap_high() (on x86),
neither of which may return NULL. However, only kmap_atomic() is
documented as being guaranteed to return a valid value. If we could
have a similar definitive statement for kmap(), we can then cleanup
quite a bit of redundant error handling.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/