From 1b46807e0bc6160449ce04a207fa98a694bc443c Mon Sep 17 00:00:00 2001 From: Lalit Chandivade Date: Tue, 17 May 2011 23:17:09 -0700 Subject: [PATCH] [SCSI] qla4xxx: Remove AF_DPC_SCHEDULED flag from ha. Since queue_work does not requeue, there is no need to check if a work is in progress using the AF_DPC_SCHEDULED flag. queue_work would return if work is pending without adding the work, do_dpc would again get invoked from qla4xxx_timer if there is still DPC flags set. Signed-off-by: Lalit Chandivade Signed-off-by: Vikas Chaudhary Reviewed-by: Mike Christie Signed-off-by: James Bottomley --- drivers/scsi/qla4xxx/ql4_def.h | 1 - drivers/scsi/qla4xxx/ql4_os.c | 17 +++++------------ 2 files changed, 5 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h index 75edfba92f48..8e3a28e300a4 100644 --- a/drivers/scsi/qla4xxx/ql4_def.h +++ b/drivers/scsi/qla4xxx/ql4_def.h @@ -368,7 +368,6 @@ struct scsi_qla_host { #define AF_INIT_DONE 1 /* 0x00000002 */ #define AF_MBOX_COMMAND 2 /* 0x00000004 */ #define AF_MBOX_COMMAND_DONE 3 /* 0x00000008 */ -#define AF_DPC_SCHEDULED 5 /* 0x00000020 */ #define AF_INTERRUPTS_ON 6 /* 0x00000040 */ #define AF_GET_CRASH_RECORD 7 /* 0x00000080 */ #define AF_LINK_UP 8 /* 0x00000100 */ diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index 302938ed2015..9c1c8453d6c7 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -859,7 +859,7 @@ static void qla4xxx_timer(struct scsi_qla_host *ha) } /* Wakeup the dpc routine for this adapter, if needed. */ - if ((start_dpc || + if (start_dpc || test_bit(DPC_RESET_HA, &ha->dpc_flags) || test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || @@ -869,9 +869,7 @@ static void qla4xxx_timer(struct scsi_qla_host *ha) test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || - test_bit(DPC_AEN, &ha->dpc_flags)) && - !test_bit(AF_DPC_SCHEDULED, &ha->flags) && - ha->dpc_thread) { + test_bit(DPC_AEN, &ha->dpc_flags)) { DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" " - dpc flags = 0x%lx\n", ha->host_no, __func__, ha->dpc_flags)); @@ -1261,11 +1259,8 @@ static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha) void qla4xxx_wake_dpc(struct scsi_qla_host *ha) { - if (ha->dpc_thread && - !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { - set_bit(AF_DPC_SCHEDULED, &ha->flags); + if (ha->dpc_thread) queue_work(ha->dpc_thread, &ha->dpc_work); - } } /** @@ -1292,12 +1287,12 @@ static void qla4xxx_do_dpc(struct work_struct *work) /* Initialization not yet finished. Don't do anything yet. */ if (!test_bit(AF_INIT_DONE, &ha->flags)) - goto do_dpc_exit; + return; if (test_bit(AF_EEH_BUSY, &ha->flags)) { DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", ha->host_no, __func__, ha->flags)); - goto do_dpc_exit; + return; } if (is_qla8022(ha)) { @@ -1404,8 +1399,6 @@ dpc_post_reset_ha: } } -do_dpc_exit: - clear_bit(AF_DPC_SCHEDULED, &ha->flags); } /** -- 2.39.5