From d0672a03e0af5dd4b07dc9175b38e44290722192 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:14 +0200 Subject: scsi: core: Introduce scsi_status_is_check_condition() Add a helper function scsi_status_is_check_condition() to encapsulate the frequent checks for SAM_STAT_CHECK_CONDITION. Link: https://lore.kernel.org/r/20210427083046.31620-9-hare@suse.de Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- include/scsi/scsi.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/scsi') diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index 6dc2d1b3735e..57f0ca00ddda 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -62,6 +62,21 @@ static inline int scsi_is_wlun(u64 lun) return (lun & 0xff00) == SCSI_W_LUN_BASE; } +/** + * scsi_status_is_check_condition - check the status return. + * + * @status: the status passed up from the driver (including host and + * driver components) + * + * This returns true if the status code is SAM_STAT_CHECK_CONDITION. + */ +static inline int scsi_status_is_check_condition(int status) +{ + if (status < 0) + return false; + status &= 0xfe; + return status == SAM_STAT_CHECK_CONDITION; +} /* * MESSAGE CODES -- cgit v1.2.3