Re: [patch] spi: pic32-sqi: silence array overflow warning
From: Purna Chandra Mandal
Date: Fri Apr 22 2016 - 06:05:29 EST
On 04/22/2016 03:25 PM, Dan Carpenter wrote:
> We read one element beyond the end of the array when we access
> "rdesc[i + 1]" so it causes a static checker warning. It's harmless
> because we write over it again on the next line. But let's just silence
> the warning.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>
> diff --git a/drivers/spi/spi-pic32-sqi.c b/drivers/spi/spi-pic32-sqi.c
> index b215347..74b9e68 100644
> --- a/drivers/spi/spi-pic32-sqi.c
> +++ b/drivers/spi/spi-pic32-sqi.c
> @@ -537,7 +537,7 @@ static int ring_desc_ring_alloc(struct pic32_sqi *sqi)
> }
>
> /* Prepare BD: chain to next BD(s) */
> - for (i = 0, rdesc = sqi->ring; i < PESQI_BD_COUNT; i++)
> + for (i = 0, rdesc = sqi->ring; i < PESQI_BD_COUNT - 1; i++)
> bd[i].bd_nextp = rdesc[i + 1].bd_dma;
> bd[PESQI_BD_COUNT - 1].bd_nextp = 0;
>
Reviewed-by: Purna Chandra Mandal <purna.mandal@xxxxxxxxxxxxx>