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scsi: core: check for equality of result byte values

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When evaluating a SCSI command's result using the field access macros,
check for equality of the fields and not if a specific bit is set.

This is a preparation patch, for reworking the results field in the
SCSI command.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Johannes Thumshirn 2018-06-25 13:20:58 +02:00 committed by Martin K. Petersen
parent 8e1695a07c
commit c65be1a63f
9 changed files with 18 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/ch.c
View File

@ -199,7 +199,7 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len,
buflength, &sshdr, timeout * HZ,
MAX_RETRIES, NULL);
if (driver_byte(result) & DRIVER_SENSE) {
if (driver_byte(result) == DRIVER_SENSE) {
if (debug)
scsi_print_sense_hdr(ch->device, ch->name, &sshdr);
errno = ch_find_errno(&sshdr);

5
drivers/scsi/dc395x.c
View File

@ -3473,9 +3473,8 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb,
/*if( srb->cmd->cmnd[0] == INQUIRY && */
/* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */
if ((cmd->result == (DID_OK << 16)
|| status_byte(cmd->result) &
CHECK_CONDITION)) {
if ((cmd->result == (DID_OK << 16) ||
status_byte(cmd->result) == CHECK_CONDITION)) {
if (!dcb->init_tcq_flag) {
add_dev(acb, dcb, ptr);
dcb->init_tcq_flag = 1;

2
drivers/scsi/scsi.c
View File

@ -162,7 +162,7 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
(level > 1)) {
scsi_print_result(cmd, "Done", disposition);
scsi_print_command(cmd);
if (status_byte(cmd->result) & CHECK_CONDITION)
if (status_byte(cmd->result) == CHECK_CONDITION)
scsi_print_sense(cmd);
if (level > 3)
scmd_printk(KERN_INFO, cmd,

4
drivers/scsi/scsi_ioctl.c
View File

@ -100,8 +100,8 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd,
SCSI_LOG_IOCTL(2, sdev_printk(KERN_INFO, sdev,
"Ioctl returned 0x%x\n", result));
if ((driver_byte(result) & DRIVER_SENSE) &&
(scsi_sense_valid(&sshdr))) {
if (driver_byte(result) == DRIVER_SENSE &&
scsi_sense_valid(&sshdr)) {
switch (sshdr.sense_key) {
case ILLEGAL_REQUEST:
if (cmd[0] == ALLOW_MEDIUM_REMOVAL)

4
drivers/scsi/scsi_lib.c
View File

@ -911,7 +911,7 @@ static void scsi_io_completion_action(struct scsi_cmnd *cmd, int result)
*/
if (!level && __ratelimit(&_rs)) {
scsi_print_result(cmd, NULL, FAILED);
if (driver_byte(result) & DRIVER_SENSE)
if (driver_byte(result) == DRIVER_SENSE)
scsi_print_sense(cmd);
scsi_print_command(cmd);
}
@ -2605,7 +2605,7 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage,
* ILLEGAL REQUEST if the code page isn't supported */
if (use_10_for_ms && !scsi_status_is_good(result) &&
(driver_byte(result) & DRIVER_SENSE)) {
driver_byte(result) == DRIVER_SENSE) {
if (scsi_sense_valid(sshdr)) {
if ((sshdr->sense_key == ILLEGAL_REQUEST) &&
(sshdr->asc == 0x20) && (sshdr->ascq == 0)) {

2
drivers/scsi/scsi_scan.c
View File

@ -614,7 +614,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
* INQUIRY should not yield UNIT_ATTENTION
* but many buggy devices do so anyway.
*/
if ((driver_byte(result) & DRIVER_SENSE) &&
if (driver_byte(result) == DRIVER_SENSE &&
scsi_sense_valid(&sshdr)) {
if ((sshdr.sense_key == UNIT_ATTENTION) &&
((sshdr.asc == 0x28) ||

2
drivers/scsi/scsi_transport_spi.c
View File

@ -136,7 +136,7 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd,
REQ_FAILFAST_TRANSPORT |
REQ_FAILFAST_DRIVER,
0, NULL);
if (!(driver_byte(result) & DRIVER_SENSE) ||
if (driver_byte(result) != DRIVER_SENSE ||
sshdr->sense_key != UNIT_ATTENTION)
break;
}

14
drivers/scsi/sd.c
View File

@ -1635,7 +1635,7 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
if (res) {
sd_print_result(sdkp, "Synchronize Cache(10) failed", res);
if (driver_byte(res) & DRIVER_SENSE)
if (driver_byte(res) == DRIVER_SENSE)
sd_print_sense_hdr(sdkp, sshdr);
/* we need to evaluate the error return */
@ -1737,8 +1737,8 @@ static int sd_pr_command(struct block_device *bdev, u8 sa,
result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, &data, sizeof(data),
&sshdr, SD_TIMEOUT, SD_MAX_RETRIES, NULL);
if ((driver_byte(result) & DRIVER_SENSE) &&
(scsi_sense_valid(&sshdr))) {
if (driver_byte(result) == DRIVER_SENSE &&
scsi_sense_valid(&sshdr)) {
sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result);
scsi_print_sense_hdr(sdev, NULL, &sshdr);
}
@ -2095,10 +2095,10 @@ sd_spinup_disk(struct scsi_disk *sdkp)
retries++;
} while (retries < 3 &&
(!scsi_status_is_good(the_result) ||
((driver_byte(the_result) & DRIVER_SENSE) &&
((driver_byte(the_result) == DRIVER_SENSE) &&
sense_valid && sshdr.sense_key == UNIT_ATTENTION)));
if ((driver_byte(the_result) & DRIVER_SENSE) == 0) {
if (driver_byte(the_result) != DRIVER_SENSE) {
/* no sense, TUR either succeeded or failed
* with a status error */
if(!spintime && !scsi_status_is_good(the_result)) {
@ -2224,7 +2224,7 @@ static void read_capacity_error(struct scsi_disk *sdkp, struct scsi_device *sdp,
struct scsi_sense_hdr *sshdr, int sense_valid,
int the_result)
{
if (driver_byte(the_result) & DRIVER_SENSE)
if (driver_byte(the_result) == DRIVER_SENSE)
sd_print_sense_hdr(sdkp, sshdr);
else
sd_printk(KERN_NOTICE, sdkp, "Sense not available.\n");
@ -3490,7 +3490,7 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start)
SD_TIMEOUT, SD_MAX_RETRIES, 0, RQF_PM, NULL);
if (res) {
sd_print_result(sdkp, "Start/Stop Unit failed", res);
if (driver_byte(res) & DRIVER_SENSE)
if (driver_byte(res) == DRIVER_SENSE)
sd_print_sense_hdr(sdkp, &sshdr);
if (scsi_sense_valid(&sshdr) &&
/* 0x3a is medium not present */

2
drivers/scsi/ufs/ufshcd.c
View File

@ -7303,7 +7303,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba,
sdev_printk(KERN_WARNING, sdp,
"START_STOP failed for power mode: %d, result %x\n",
pwr_mode, ret);
if (driver_byte(ret) & DRIVER_SENSE)
if (driver_byte(ret) == DRIVER_SENSE)
scsi_print_sense_hdr(sdp, NULL, &sshdr);
}