| Message ID | 20240315100600.19568-3-skashyap@marvell.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | qedf misc bug fixes | expand |
Hi Saurav, kernel test robot noticed the following build warnings: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on jejb-scsi/for-next linus/master v6.8 next-20240315] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Saurav-Kashyap/qedf-Don-t-process-stag-work-during-unload-and-recovery/20240315-180830 base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next patch link: https://lore.kernel.org/r/20240315100600.19568-3-skashyap%40marvell.com patch subject: [PATCH 2/3] qedf: Wait for stag work during unload. config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20240316/202403160959.uNobO4UE-lkp@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240316/202403160959.uNobO4UE-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202403160959.uNobO4UE-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/scsi/qedf/qedf_main.c:923:37: warning: variable 'qedf' is uninitialized when used here [-Wuninitialized] 923 | clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); | ^~~~ drivers/scsi/qedf/qedf_main.c:919:23: note: initialize the variable 'qedf' to silence this warning 919 | struct qedf_ctx *qedf; | ^ | = NULL 1 warning generated. vim +/qedf +923 drivers/scsi/qedf/qedf_main.c 915 916 /* Performs soft reset of qedf_ctx by simulating a link down/up */ 917 void qedf_ctx_soft_reset(struct fc_lport *lport) 918 { 919 struct qedf_ctx *qedf; 920 struct qed_link_output if_link; 921 922 if (lport->vport) { > 923 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 924 printk_ratelimited("Cannot issue host reset on NPIV port.\n"); 925 return; 926 } 927 928 qedf = lport_priv(lport); 929 930 qedf->flogi_pending = 0; 931 /* For host reset, essentially do a soft link up/down */ 932 atomic_set(&qedf->link_state, QEDF_LINK_DOWN); 933 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 934 "Queuing link down work.\n"); 935 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 936 0); 937 938 if (qedf_wait_for_upload(qedf) == false) { 939 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n"); 940 WARN_ON(atomic_read(&qedf->num_offloads)); 941 } 942 943 /* Before setting link up query physical link state */ 944 qed_ops->common->get_link(qedf->cdev, &if_link); 945 /* Bail if the physical link is not up */ 946 if (!if_link.link_up) { 947 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 948 "Physical link is not up.\n"); 949 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 950 return; 951 } 952 /* Flush and wait to make sure link down is processed */ 953 flush_delayed_work(&qedf->link_update); 954 msleep(500); 955 956 atomic_set(&qedf->link_state, QEDF_LINK_UP); 957 qedf->vlan_id = 0; 958 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, 959 "Queue link up work.\n"); 960 queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 961 0); 962 clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); 963 } 964
diff --git a/drivers/scsi/qedf/qedf.h b/drivers/scsi/qedf/qedf.h index 5058e01b65a2..98afdfe63600 100644 --- a/drivers/scsi/qedf/qedf.h +++ b/drivers/scsi/qedf/qedf.h @@ -363,6 +363,7 @@ struct qedf_ctx { #define QEDF_IN_RECOVERY 5 #define QEDF_DBG_STOP_IO 6 #define QEDF_PROBING 8 +#define QEDF_STAG_IN_PROGRESS 9 unsigned long flags; /* Miscellaneous state flags */ int fipvlan_retries; u8 num_queues; diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c index e882aec86765..d441054dadb7 100644 --- a/drivers/scsi/qedf/qedf_main.c +++ b/drivers/scsi/qedf/qedf_main.c @@ -318,11 +318,18 @@ static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, */ if (resp == fc_lport_flogi_resp) { qedf->flogi_cnt++; + qedf->flogi_pending++; + + if (test_bit(QEDF_UNLOADING, &qedf->flags)) { + QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n"); + qedf->flogi_pending = 0; + } + if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { schedule_delayed_work(&qedf->stag_work, 2); return NULL; } - qedf->flogi_pending++; + return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, arg, timeout); } @@ -913,6 +920,7 @@ void qedf_ctx_soft_reset(struct fc_lport *lport) struct qed_link_output if_link; if (lport->vport) { + clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); printk_ratelimited("Cannot issue host reset on NPIV port.\n"); return; } @@ -938,6 +946,7 @@ void qedf_ctx_soft_reset(struct fc_lport *lport) if (!if_link.link_up) { QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Physical link is not up.\n"); + clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); return; } /* Flush and wait to make sure link down is processed */ @@ -950,6 +959,7 @@ void qedf_ctx_soft_reset(struct fc_lport *lport) "Queue link up work.\n"); queue_delayed_work(qedf->link_update_wq, &qedf->link_update, 0); + clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); } /* Reset the host by gracefully logging out and then logging back in */ @@ -3721,6 +3731,7 @@ static void __qedf_remove(struct pci_dev *pdev, int mode) { struct qedf_ctx *qedf; int rc; + int cnt = 0; if (!pdev) { QEDF_ERR(NULL, "pdev is NULL.\n"); @@ -3738,6 +3749,17 @@ static void __qedf_remove(struct pci_dev *pdev, int mode) return; } +stag_in_prog: + if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) { + QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt); + cnt++; + + if (cnt < 5) { + msleep(500); + goto stag_in_prog; + } + } + if (mode != QEDF_MODE_RECOVERY) set_bit(QEDF_UNLOADING, &qedf->flags); @@ -4013,6 +4035,8 @@ void qedf_stag_change_work(struct work_struct *work) return; } + set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags); + printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.", dev_name(&qedf->pdev->dev), __func__, __LINE__, qedf->dbg_ctx.host_no);