[PATCH v2] fix dmaengine_unmap failure

Dan Williams dan.j.williams at intel.com
Thu Apr 10 14:03:40 EST 2014

On Wed, Mar 19, 2014 at 11:33 PM,  <xuelin.shi at freescale.com> wrote:
> From: Xuelin Shi <xuelin.shi at freescale.com>
> The count which is used to get_unmap_data maybe not the same as the
> count computed in dmaengine_unmap which causes to free data in a
> wrong pool.
> This patch fixes this issue by keeping the map count with unmap_data
> structure and use this count to get the pool.
> Signed-off-by: Xuelin Shi <xuelin.shi at freescale.com>
> ---
> change history:
>         v1: keep mempool pointer with unmap struct
>         v2: keep u8 map_cnt instead of mempool pointer to save mem.

Looks good, but please next time remember to prefix your subject line.  I.e.

"dmaengine: fix dmaengine_unmap failure"

I'll fix this up.


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