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author | Wolfram Sang <w.sang@pengutronix.de> | 2012-10-08 10:46:32 (GMT) |
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committer | Wolfram Sang <w.sang@pengutronix.de> | 2012-10-08 10:46:32 (GMT) |
commit | 102084d3d3969646cc89ea159e50898aeafc6649 (patch) | |
tree | e92924469b3fab3ee6fa29e338e0a3a4cb167e82 /drivers/target/target_core_spc.c | |
parent | 6ccbe607132bd823abbad8d32b13af89161707da (diff) | |
parent | 979570e02981d4a8fc20b3cc8fd651856c98ee9d (diff) | |
download | linux-fsl-qoriq-102084d3d3969646cc89ea159e50898aeafc6649.tar.xz |
Merge tag 'v3.6-rc7' into i2c-embedded/for-next
Linux 3.6-rc7
Needed to get updates from i2c-embedded/for-current into i2c-embedded/for-next
Diffstat (limited to 'drivers/target/target_core_spc.c')
-rw-r--r-- | drivers/target/target_core_spc.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 4c861de..388a922 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -877,9 +877,11 @@ static int spc_emulate_modesense(struct se_cmd *cmd) static int spc_emulate_request_sense(struct se_cmd *cmd) { unsigned char *cdb = cmd->t_task_cdb; - unsigned char *buf; + unsigned char *rbuf; u8 ua_asc = 0, ua_ascq = 0; - int err = 0; + unsigned char buf[SE_SENSE_BUF]; + + memset(buf, 0, SE_SENSE_BUF); if (cdb[1] & 0x01) { pr_err("REQUEST_SENSE description emulation not" @@ -888,20 +890,21 @@ static int spc_emulate_request_sense(struct se_cmd *cmd) return -ENOSYS; } - buf = transport_kmap_data_sg(cmd); - - if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { + rbuf = transport_kmap_data_sg(cmd); + if (cmd->scsi_sense_reason != 0) { + /* + * Out of memory. We will fail with CHECK CONDITION, so + * we must not clear the unit attention condition. + */ + target_complete_cmd(cmd, CHECK_CONDITION); + return 0; + } else if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { /* * CURRENT ERROR, UNIT ATTENTION */ buf[0] = 0x70; buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; - if (cmd->data_length < 18) { - buf[7] = 0x00; - err = -EINVAL; - goto end; - } /* * The Additional Sense Code (ASC) from the UNIT ATTENTION */ @@ -915,11 +918,6 @@ static int spc_emulate_request_sense(struct se_cmd *cmd) buf[0] = 0x70; buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; - if (cmd->data_length < 18) { - buf[7] = 0x00; - err = -EINVAL; - goto end; - } /* * NO ADDITIONAL SENSE INFORMATION */ @@ -927,8 +925,11 @@ static int spc_emulate_request_sense(struct se_cmd *cmd) buf[7] = 0x0A; } -end: - transport_kunmap_data_sg(cmd); + if (rbuf) { + memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); + transport_kunmap_data_sg(cmd); + } + target_complete_cmd(cmd, GOOD); return 0; } |