From: "Ewan D. Milne" <emi...@redhat.com>
Avoid duplicate tests when examining sense data for FM/EOM/ILI
bits. Moved extraction of status to scsi_normalize_sense() if
the config option CONFIG_SCSI_ENHANCED_UA is used, because
descriptor format sense data is already being parsed there.
Signed-off-by: Ewan D. Milne <emi...@redhat.com>
---
drivers/scsi/scsi_error.c | 13 +++++++++++++
include/scsi/scsi_eh.h | 3 +++
2 files changed, 16 insertions(+)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 3aa8706..c6344ef 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -332,6 +332,10 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
* Previous logic looked for FILEMARK, EOM or ILI which are
* mainly associated with tapes and returned SUCCESS.
*/
+#ifdef CONFIG_SCSI_ENHANCED_UA
+ if (sshdr.fm_eom_ili)
+ return SUCCESS;
+#else
if (sshdr.response_code == 0x70) {
/* fixed format */
if (scmd->sense_buffer[2] & 0xe0)
@@ -347,6 +351,7 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
(scmd->sense_buffer[11] & 0xe0))
return SUCCESS;
}
+#endif
switch (sshdr.sense_key) {
case NO_SENSE:
@@ -2192,6 +2197,11 @@ int scsi_normalize_sense(const u8 *sense_buffer, int
sb_len,
((sense_buffer[desc_pos + 4] & 0x01) != 0))
sshdr->ua_queue_overflow = 1;
+ if ((desc_type == 0x04) && (desc_len >= 4) &&
+ (addl_len >= 2) &&
+ ((sense_buffer[desc_pos + 3] & 0xe0) != 0))
+ sshdr->fm_eom_ili = 1;
+
if (addl_len > (desc_len - 2))
addl_len = desc_len - 2;
@@ -2205,6 +2215,9 @@ int scsi_normalize_sense(const u8 *sense_buffer, int
sb_len,
* fixed format
*/
if (sb_len > 2) {
+#ifdef CONFIG_SCSI_ENHANCED_UA
+ sshdr->fm_eom_ili = ((sense_buffer[2] & 0xe0) != 0);
+#endif
sshdr->overflow = ((sense_buffer[2] & 0x10) != 0);
sshdr->sense_key = (sense_buffer[2] & 0xf);
}
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index dc6dcfe..136dc71 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -28,6 +28,9 @@ struct scsi_sense_hdr { /* See SPC-3 section
4.5 */
unsigned int overflow:1; /* sense data overflow */
#ifdef CONFIG_SCSI_ENHANCED_UA
unsigned int ua_queue_overflow:1; /* UA info lost by device */
+
+ unsigned int fm_eom_ili:1; /* filemark, end of medium, or
+ incorrect length indicator set */
#endif
};
--
1.7.11.7
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