Re: [PATCH] dma: dw-axi-dmac: fix null dereference when pointer first is null

From: Vinod Koul
Date: Tue May 21 2019 - 00:59:45 EST


On 08-05-19, 23:33, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> In the unlikely event that axi_desc_get returns a null desc in the
> very first iteration of the while-loop the error exit path ends
> up calling axi_desc_put on a null pointer 'first' and this causes
> a null pointer dereference. Fix this by adding a null check on
> pointer 'first' before calling axi_desc_put.

Applied, thanks

--
~Vinod