[PATCH] state: backend_bucket_circular: fix for non power of 2 writesize

Sascha Hauer s.hauer at pengutronix.de
Tue Sep 25 23:57:22 PDT 2018


On Tue, Sep 25, 2018 at 12:58:45PM +0200, Ladislav Michl wrote:
> backend_bucket_circular currently assumes writesize is power of 2,
> which makes it fail on dataflash devices, where this assumption
> is false.
> 
> Signed-off-by: Ladislav Michl <ladis at linux-mips.org>
> ---
>  common/state/backend_bucket_circular.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/common/state/backend_bucket_circular.c b/common/state/backend_bucket_circular.c
> index 933493e22..0529421a2 100644
> --- a/common/state/backend_bucket_circular.c
> +++ b/common/state/backend_bucket_circular.c
> @@ -248,7 +248,7 @@ static int state_backend_bucket_circular_read(struct state_backend_storage_bucke
>  		circ->write_area = 0;
>  		dev_info(circ->dev, "Detected old on-storage format\n");
>  	} else if (circ->last_written_length > circ->write_area
> -		   || !IS_ALIGNED(circ->last_written_length, circ->writesize)) {
> +		   || (circ->last_written_length % circ->writesize != 0)) {
>  		circ->write_area = 0;
>  		dev_err(circ->dev, "Error, invalid number of bytes written last time %d\n",
>  			circ->last_written_length);
> @@ -295,7 +295,7 @@ static int state_backend_bucket_circular_write(struct state_backend_storage_buck
>  	    get_bucket_circular(bucket);
>  	off_t offset;
>  	struct state_backend_storage_bucket_circular_meta *meta;
> -	uint32_t written_length = ALIGN(len + sizeof(*meta), circ->writesize);
> +	uint32_t written_length = roundup(len + sizeof(*meta), circ->writesize);
>  	int ret;
>  	void *write_buf;
>  
> -- 
> 2.19.0
> 
> 
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