On 09/15/2017 12:06 PM, Damien Le Moal wrote:
> The three values starting at byte 8 of the Zoned Block Device
> Characteristics VPD page B6h are 32 bits values, not 64bits. So use
> get_unaligned_be32() to retrieve the values and not get_unaligned_be64()
>
> Fixes: 89d947561077 ("sd: Implement support for ZBC devices")
> Cc: <stable@xxxxxxxxxxxxxxx>
>
> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
> Reviewed-by: Bart Van Assche <Bart.VanAssche@xxxxxxx>
> Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
> ---
> drivers/scsi/sd_zbc.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c
> index 37b33adbb2ef..7e30d0c22930 100644
> --- a/drivers/scsi/sd_zbc.c
> +++ b/drivers/scsi/sd_zbc.c
> @@ -385,15 +385,15 @@ static int sd_zbc_read_zoned_characteristics(struct scsi_disk *sdkp,
> if (sdkp->device->type != TYPE_ZBC) {
> /* Host-aware */
> sdkp->urswrz = 1;
> - sdkp->zones_optimal_open = get_unaligned_be64(&buf[8]);
> - sdkp->zones_optimal_nonseq = get_unaligned_be64(&buf[12]);
> + sdkp->zones_optimal_open = get_unaligned_be32(&buf[8]);
> + sdkp->zones_optimal_nonseq = get_unaligned_be32(&buf[12]);
> sdkp->zones_max_open = 0;
> } else {
> /* Host-managed */
> sdkp->urswrz = buf[4] & 1;
> sdkp->zones_optimal_open = 0;
> sdkp->zones_optimal_nonseq = 0;
> - sdkp->zones_max_open = get_unaligned_be64(&buf[16]);
> + sdkp->zones_max_open = get_unaligned_be32(&buf[16]);
> }
>
> return 0;
>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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