Commit f26b9044 authored by David C Somayajulu's avatar David C Somayajulu Committed by James Bottomley
Browse files

[PATCH] qla4xxx: bug fix: driver hardware semaphore needs to be grabbed before soft reset

On qla4xxx, the driver needs to grab the drvr semaphore provided by
the hardware, prior to issuing a reset. This patches takes care of a
couple of places where it was not being done. In addition there is
minor clean up.
Signed-off-by: default avatarDavid Somayajulu <>
Signed-off-by: default avatarJames Bottomley <>
parent 0f9005a6
......@@ -8,6 +8,7 @@
#ifndef __QLA4x_GBL_H
#define __QLA4x_GBL_H
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a);
int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port);
int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb);
int qla4xxx_initialize_adapter(struct scsi_qla_host * ha,
......@@ -978,7 +978,7 @@ static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
return status;
static int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
#define QL4_LOCK_DRVR_WAIT 300
#define QL4_LOCK_DRVR_SLEEP 100
......@@ -919,18 +919,11 @@ static int qla4xxx_recover_adapter(struct scsi_qla_host *ha,
if (status == QLA_SUCCESS) {
DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n",
ha->host_no, __func__));
status = qla4xxx_soft_reset(ha);
/* FIXMEkaren: Do we want to keep interrupts enabled and process
AENs after soft reset */
/* If firmware (SOFT) reset failed, or if all outstanding
* commands have not returned, then do a HARD reset.
if (status == QLA_ERROR) {
DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n",
ha->host_no, __func__));
status = qla4xxx_hard_reset(ha);
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS)
status = qla4xxx_soft_reset(ha);
status = QLA_ERROR;
/* Flush any pending ddb changed AENs */
......@@ -1016,13 +1009,9 @@ static void qla4xxx_do_dpc(void *data)
struct scsi_qla_host *ha = (struct scsi_qla_host *) data;
struct ddb_entry *ddb_entry, *dtemp;
DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n",
ha->host_no, __func__));
DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n",
ha->host_no, __func__, ha->flags));
DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n",
ha->host_no, __func__, ha->dpc_flags));
DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
"flags = 0x%08lx, dpc_flags = 0x%08lx\n",
ha->host_no, __func__, ha->flags, ha->dpc_flags));
/* Initialization not yet finished. Don't do anything yet. */
if (!test_bit(AF_INIT_DONE, &ha->flags))
......@@ -1032,16 +1021,8 @@ static void qla4xxx_do_dpc(void *data)
test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) {
if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags))
* dg 09/23 Never initialize ddb list
* once we up and running
* qla4xxx_recover_adapter(ha,
qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) ||
test_bit(DPC_RESET_HA, &ha->dpc_flags))
qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
......@@ -1122,7 +1103,8 @@ static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
/* Issue Soft Reset to put firmware in unknown state */
if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS)
/* Remove timer thread, if present */
if (ha->timer_active)
......@@ -5,9 +5,4 @@
* See LICENSE.qla4xxx for copyright and licensing details.
#define QLA4XXX_DRIVER_VERSION "5.00.05b9-k"
#define QLA4XXX_DRIVER_VERSION "5.00.06-k"
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