[SCSI] qla2xxx: Fix to allow to reset devices using sg interface (sg_reset).

Currently it is impossible to reset provided by Qlogic QLA2xxx driver
SCSI devices externally using corresponding sg devices, particularly via
sg_reset utility, because qla2xxx driver in qla2xxx_eh_device_reset()
function checks if the input scsi_cmnd has its private data (CMD_SP())
attached. Then the found pointer isn't used anywhere inside of
qla2xxx_eh_device_reset(). If the RESET request comes from sg device, it
doesn't have such private data.

The attached patch removes check for non-NULL CMD_SP() from
qla2xxx_eh_device_reset(), hence allows to reset QLA2xxx's devices using
corresponding sg devices.

AV: change applies to bus/host reset handlers as well.

Signed-off-by: Vladislav Bolkhovitin <vst@vlnb.net>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 3 insertions, 9 deletions

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index ec7ebb6037e6..1e2b95bac830 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -744,7 +744,6 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
-        srb_t *sp;
         int ret;
         unsigned int id, lun;
         unsigned long serial;
@@ -755,8 +754,7 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
-        sp = (srb_t *) CMD_SP(cmd);
-        if (!sp || !fcport)
+        if (!fcport)
                 return ret;
 
         qla_printk(KERN_INFO, ha,
@@ -875,7 +873,6 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
-        srb_t *sp;
         int ret;
         unsigned int id, lun;
         unsigned long serial;
@@ -886,8 +883,7 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
-        sp = (srb_t *) CMD_SP(cmd);
-        if (!sp || !fcport)
+        if (!fcport)
                 return ret;
 
         qla_printk(KERN_INFO, ha,
@@ -936,7 +932,6 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
 {
         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
-        srb_t *sp;
         int ret;
         unsigned int id, lun;
         unsigned long serial;
@@ -947,8 +942,7 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
         lun = cmd->device->lun;
         serial = cmd->serial_number;
 
-        sp = (srb_t *) CMD_SP(cmd);
-        if (!sp || !fcport)
+        if (!fcport)
                 return ret;
 
         qla_printk(KERN_INFO, ha,