From: Damien Le Moal Date: Fri, 20 Dec 2019 07:58:22 +0000 (+0900) Subject: scsi: sd_zbc: Simplify sd_zbc_check_zones() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=19aaa4072327f467ab82db7d1f0055675e2a4cd4;p=linux.git scsi: sd_zbc: Simplify sd_zbc_check_zones() Now that the block layer generic zone revalidation code in blk_revalidate_disk_zones() checks for power of 2 zone size, there is no need to do it in sd_zbc_check_zones(). Remove this check. Link: https://lore.kernel.org/r/20191220075823.400072-2-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index e0bd4cf172307..aca6367ced06e 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -325,14 +325,11 @@ static int sd_zbc_check_zoned_characteristics(struct scsi_disk *sdkp, } /** - * sd_zbc_check_zones - Check the device capacity and zone sizes + * sd_zbc_check_zones - Check the device capacity and zone size * @sdkp: Target disk * * Check that the device capacity as reported by READ CAPACITY matches the - * max_lba value (plus one)of the report zones command reply. Also check that - * all zones of the device have an equal size, only allowing the last zone of - * the disk to have a smaller size (runt zone). The zone size must also be a - * power of two. + * max_lba value (plus one)of the report zones command reply. * * Returns the zone size in number of blocks upon success or an error code * upon failure. @@ -366,14 +363,6 @@ static int sd_zbc_check_zones(struct scsi_disk *sdkp, unsigned char *buf, /* Parse REPORT ZONES header */ rec = buf + 64; zone_blocks = get_unaligned_be64(&rec[8]); - if (!zone_blocks || !is_power_of_2(zone_blocks)) { - if (sdkp->first_scan) - sd_printk(KERN_NOTICE, sdkp, - "Devices with non power of 2 zone " - "size are not supported\n"); - return -ENODEV; - } - if (logical_to_sectors(sdkp->device, zone_blocks) > UINT_MAX) { if (sdkp->first_scan) sd_printk(KERN_NOTICE, sdkp,