From 2082ebc45af9c9c648383b8cde0dc1948eadbf31 Mon Sep 17 00:00:00 2001 From: "Moger, Babu" Date: Tue, 24 Jan 2012 20:38:46 +0000 Subject: [SCSI] fix the new host byte settings (DID_TARGET_FAILURE and DID_NEXUS_FAILURE) This patch fixes the host byte settings DID_TARGET_FAILURE and DID_NEXUS_FAILURE. The function __scsi_error_from_host_byte, tries to reset the host byte to DID_OK. But that does not happen because of the OR operation. Here is the flow. scsi_softirq_done-> scsi_decide_disposition -> __scsi_error_from_host_byte Let's take an example with DID_NEXUS_FAILURE. In scsi_decide_disposition, result will be set as DID_NEXUS_FAILURE (=0x11). Then in __scsi_error_from_host_byte, when we do OR with DID_OK. Purpose is to reset it back to DID_OK. But that does not happen. This patch fixes this issue. Signed-off-by: Babu Moger Signed-off-by: James Bottomley diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 5f84a14..6ae3b5d 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -1540,7 +1540,7 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd) * Need to modify host byte to signal a * permanent target failure */ - scmd->result |= (DID_TARGET_FAILURE << 16); + set_host_byte(scmd, DID_TARGET_FAILURE); rtn = SUCCESS; } /* if rtn == FAILED, we have no sense information; @@ -1560,7 +1560,7 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd) case RESERVATION_CONFLICT: sdev_printk(KERN_INFO, scmd->device, "reservation conflict\n"); - scmd->result |= (DID_NEXUS_FAILURE << 16); + set_host_byte(scmd, DID_NEXUS_FAILURE); return SUCCESS; /* causes immediate i/o error */ default: return FAILED; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index b2c95db..5b770e9 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -682,11 +682,11 @@ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result) error = -ENOLINK; break; case DID_TARGET_FAILURE: - cmd->result |= (DID_OK << 16); + set_host_byte(cmd, DID_OK); error = -EREMOTEIO; break; case DID_NEXUS_FAILURE: - cmd->result |= (DID_OK << 16); + set_host_byte(cmd, DID_OK); error = -EBADE; break; default: -- cgit v0.10.2