The patch below does not apply to the 5.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 6dc45a7322cb9db48a5b6696597a00ef7c778ef9 Mon Sep 17 00:00:00 2001 From: Arun Easi aeasi@marvell.com Date: Fri, 26 Aug 2022 03:25:53 -0700 Subject: [PATCH] scsi: qla2xxx: Revert "scsi: qla2xxx: Fix response queue handler reading stale packets"

Reverting this commit so that a fixed up patch, without adding new module parameters, can be submitted.

Link: https://lore.kernel.org/stable/166039743723771@kroah.com/

This reverts commit b1f707146923335849fb70237eec27d4d1ae7d62.

Link: https://lore.kernel.org/r/20220826102559.17474-2-njavali@marvell.com Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani himanshu.madhani@oracle.com Signed-off-by: Arun Easi aeasi@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com

diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 5dd2932382ee..bb69fa8b956a 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -193,8 +193,6 @@ extern int ql2xsecenable; extern int ql2xenforce_iocb_limit; extern int ql2xabts_wait_nvme; extern u32 ql2xnvme_queues; -extern int ql2xrspq_follow_inptr; -extern int ql2xrspq_follow_inptr_legacy;

extern int qla2x00_loop_reset(scsi_qla_host_t *); extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int); diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index 76e79f350a22..ede76357ccb6 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3763,8 +3763,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, struct qla_hw_data *ha = vha->hw; struct purex_entry_24xx *purex_entry; struct purex_item *pure_item; - u16 rsp_in = 0, cur_ring_index; - int follow_inptr, is_shadow_hba; + u16 cur_ring_index;

if (!ha->flags.fw_started) return; @@ -3774,25 +3773,7 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, qla_cpu_update(rsp->qpair, smp_processor_id()); }

-#define __update_rsp_in(_update, _is_shadow_hba, _rsp, _rsp_in) \ - do { \ - if (_update) { \ - _rsp_in = _is_shadow_hba ? *(_rsp)->in_ptr : \ - rd_reg_dword_relaxed((_rsp)->rsp_q_in); \ - } \ - } while (0) - - is_shadow_hba = IS_SHADOW_REG_CAPABLE(ha); - follow_inptr = is_shadow_hba ? ql2xrspq_follow_inptr : - ql2xrspq_follow_inptr_legacy; - - __update_rsp_in(follow_inptr, is_shadow_hba, rsp, rsp_in); - - while ((likely(follow_inptr && - rsp->ring_index != rsp_in && - rsp->ring_ptr->signature != RESPONSE_PROCESSED)) || - (!follow_inptr && - rsp->ring_ptr->signature != RESPONSE_PROCESSED)) { + while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) { pkt = (struct sts_entry_24xx *)rsp->ring_ptr; cur_ring_index = rsp->ring_index;

@@ -3906,8 +3887,6 @@ void qla24xx_process_response_queue(struct scsi_qla_host *vha, } pure_item = qla27xx_copy_fpin_pkt(vha, (void **)&pkt, &rsp); - __update_rsp_in(follow_inptr, is_shadow_hba, - rsp, rsp_in); if (!pure_item) break; qla24xx_queue_purex_item(vha, pure_item, diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index f19cd2b59ad5..ce7cf7750f62 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -338,16 +338,6 @@ module_param(ql2xdelay_before_pci_error_handling, uint, 0644); MODULE_PARM_DESC(ql2xdelay_before_pci_error_handling, "Number of seconds delayed before qla begin PCI error self-handling (default: 5).\n");

-int ql2xrspq_follow_inptr = 1; -module_param(ql2xrspq_follow_inptr, int, 0644); -MODULE_PARM_DESC(ql2xrspq_follow_inptr, - "Follow RSP IN pointer for RSP updates for HBAs 27xx and newer (default: 1)."); - -int ql2xrspq_follow_inptr_legacy = 1; -module_param(ql2xrspq_follow_inptr_legacy, int, 0644); -MODULE_PARM_DESC(ql2xrspq_follow_inptr_legacy, - "Follow RSP IN pointer for RSP updates for HBAs older than 27XX. (default: 1)."); - static void qla2x00_clear_drv_active(struct qla_hw_data *); static void qla2x00_free_device(scsi_qla_host_t *); static int qla2xxx_map_queues(struct Scsi_Host *shost);