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| author |   Damien Le Moal <damien.lemoal@wdc.com> | 2018-07-03 15:23:58 +0900 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-07-10 22:25:03 -0400 |
| commit | f13cff6c25bd8986627365346d123312ee7baa78 (patch) | |
| tree | 03d3cbe622b7ec73849fead5f0874e5828bdafc3 /drivers/scsi | |
| parent | scsi: qla2xxx: Fix NULL pointer dereference for fcport search (diff) | |
| download | linux-dev-f13cff6c25bd8986627365346d123312ee7baa78.tar.xz linux-dev-f13cff6c25bd8986627365346d123312ee7baa78.zip | |
scsi: sd_zbc: Fix variable type and bogus comment
Fix the description of sd_zbc_check_zone_size() to correctly explain that
the returned value is a number of device blocks, not bytes. Additionally,
the 32 bits "ret" variable used in this function may truncate the 64 bits
zone_blocks variable value upon return. To fix this, change "ret" type to
s64.
Fixes: ccce20fc79 ("sd_zbc: Avoid that resetting a zone fails sporadically")
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Cc: Bart Van Assche <bart.vanassche@wdc.com>
Cc: stable@kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/sd_zbc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index a14fef11776e..2bf3bf73886e 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -391,7 +391,8 @@ static int sd_zbc_check_capacity(struct scsi_disk *sdkp, unsigned char *buf) * Check that all zones of the device are equal. The last zone can however * be smaller. The zone size must also be a power of two number of LBAs. * - * Returns the zone size in bytes upon success or an error code upon failure. + * Returns the zone size in number of blocks upon success or an error code + * upon failure. */ static s64 sd_zbc_check_zone_size(struct scsi_disk *sdkp) { @@ -401,7 +402,7 @@ static s64 sd_zbc_check_zone_size(struct scsi_disk *sdkp) unsigned char *rec; unsigned int buf_len; unsigned int list_length; - int ret; + s64 ret; u8 same; /* Get a buffer */ |