Re: [PATCH] edma: avoid uninitialized variable use

[Vinod Koul]

On Fri, Sep 30, 2016 at 06:19:01PM +0200, Arnd Bergmann wrote:
> If edma_read_slot() gets an invalid argument, it does not set a result,
> as found by "gcc -Wmaybe-uninitialized"
> 
> drivers/dma/edma.c: In function 'dma_ccerr_handler':
> drivers/dma/edma.c:1499:21: error: 'p.a_b_cnt' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> drivers/dma/edma.c:1499:21: error: 'p.ccnt' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>   if (p.a_b_cnt == 0 && p.ccnt == 0) {
> 
> If we change the function to return an error in this case, we can handle
> the failure more gracefully and treat this the same way as a null slot
> that we already catch.

Applied. Fixes subsystem tag

Thanks
-- 
~Vinod