From: James Smart Date: Tue, 12 Mar 2019 23:30:13 +0000 (-0700) Subject: scsi: lpfc: Stop adapter if pci errors detected X-Git-Tag: v5.4-rc1~699^2~287 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=32a9310076e4f00ac6d8a5a2d39b953d199bef0d;p=platform%2Fkernel%2Flinux-rpi.git scsi: lpfc: Stop adapter if pci errors detected In a couple of cases, the driver detected a pci error (via pci device state or via failed register reads) but didn't take any action to disable the device. Additionally, the driver is ignoring the status of pci configuration space reads. Having the driver take the adapter offline whenever the pci error is detected. Pay attention to pci_config_space_read status and return failure if an error is seen. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 291ad3b..4644cea 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -1844,8 +1844,12 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba) /* If the pci channel is offline, ignore possible errors, since * we cannot communicate with the pci card anyway. */ - if (pci_channel_offline(phba->pcidev)) + if (pci_channel_offline(phba->pcidev)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3166 pci channel is offline\n"); + lpfc_sli4_offline_eratt(phba); return; + } memset(&portsmphr_reg, 0, sizeof(portsmphr_reg)); if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); @@ -1922,6 +1926,7 @@ lpfc_handle_eratt_s4(struct lpfc_hba *phba) lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "3151 PCI bus read access failure: x%x\n", readl(phba->sli4_hba.u.if_type2.STATUSregaddr)); + lpfc_sli4_offline_eratt(phba); return; } reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr); diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index c82304c..32ded3e 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -4487,7 +4487,9 @@ lpfc_sli_brdreset(struct lpfc_hba *phba) } /* Turn off parity checking and serr during the physical reset */ - pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); + if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value)) + return -EIO; + pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value & ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); @@ -4564,7 +4566,12 @@ lpfc_sli4_brdreset(struct lpfc_hba *phba) "0389 Performing PCI function reset!\n"); /* Turn off parity checking and serr during the physical reset */ - pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); + if (pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value)) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "3205 PCI read Config failed\n"); + return -EIO; + } + pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value & ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));