The patch below does not apply to the 4.19-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@xxxxxxxxxxxxxxx>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x c91774818b041ed290df29fb1dc0725be9b12e83 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable@xxxxxxxxxxxxxxx>' --in-reply-to '2023092012-enrich-emergency-af23@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: c91774818b04 ("scsi: pm8001: Setup IRQs on resume") 653926205741 ("scsi: pm80xx: Do not call scsi_remove_host() in pm8001_alloc()") 1b5d2793283d ("scsi: pm8001: Neaten debug logging macros and uses") 1f889b58716a ("scsi: pm80xx: Fix pm8001_mpi_get_nvmd_resp() race condition") 4a2efd4b89fc ("scsi: pm80xx: Make running_req atomic") 7640e1eb8c5d ("scsi: pm80xx: Make mpi_build_cmd locking consistent") 5a141315ed7c ("scsi: pm80xx: Increase the number of outstanding I/O supported to 1024") 27bc43bd7c42 ("scsi: pm80xx: Remove DMA memory allocation for ccb and device structures") 05c6c029a44d ("scsi: pm80xx: Increase number of supported queues") dba2cc03b9db ("scsi: pm80xx: sysfs attribute for non fatal dump") b40f28820fba ("scsi: pm80xx: Cleanup initialization loading fail path") 9d9c7c20fb35 ("scsi: pm80xx: Free the tag when mpi_set_phy_profile_resp is received") d384be6ede5c ("scsi: pm80xx: Deal with kexec reboots") 58bf14c17e65 ("scsi: pm80xx: Increase request sg length") 20bc1ad2e4da ("scsi: pm80xx: fix spelling mistake "to" -> "too"") 044f59de3a3d ("scsi: pm80xx: Modified the logic to collect fatal dump") 7295493682aa ("scsi: pm80xx: Tie the interrupt name to the module instance") 3e253d9657b0 ("scsi: pm80xx: Do not request 12G sas speeds") 51c1c5f6ed64 ("scsi: pm80xx: Cleanup command when a reset times out") 91a43fa61f10 ("scsi: pm80xx: Fix command issue sizing") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From c91774818b041ed290df29fb1dc0725be9b12e83 Mon Sep 17 00:00:00 2001 From: Damien Le Moal <dlemoal@xxxxxxxxxx> Date: Tue, 12 Sep 2023 08:27:36 +0900 Subject: [PATCH] scsi: pm8001: Setup IRQs on resume The function pm8001_pci_resume() only calls pm8001_request_irq() without calling pm8001_setup_irq(). This causes the IRQ allocation to fail, which leads all drives being removed from the system. Fix this issue by integrating the code for pm8001_setup_irq() directly inside pm8001_request_irq() so that MSI-X setup is performed both during normal initialization and resume operations. Fixes: dbf9bfe61571 ("[SCSI] pm8001: add SAS/SATA HBA driver") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx> Link: https://lore.kernel.org/r/20230911232745.325149-2-dlemoal@xxxxxxxxxx Acked-by: Jack Wang <jinpu.wang@xxxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 5e5ce1e74c3b..443a3176c6c0 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -273,7 +273,6 @@ static irqreturn_t pm8001_interrupt_handler_intx(int irq, void *dev_id) return ret; } -static u32 pm8001_setup_irq(struct pm8001_hba_info *pm8001_ha); static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha); /** @@ -294,13 +293,6 @@ static int pm8001_alloc(struct pm8001_hba_info *pm8001_ha, pm8001_dbg(pm8001_ha, INIT, "pm8001_alloc: PHY:%x\n", pm8001_ha->chip->n_phy); - /* Setup Interrupt */ - rc = pm8001_setup_irq(pm8001_ha); - if (rc) { - pm8001_dbg(pm8001_ha, FAIL, - "pm8001_setup_irq failed [ret: %d]\n", rc); - goto err_out; - } /* Request Interrupt */ rc = pm8001_request_irq(pm8001_ha); if (rc) @@ -1031,47 +1023,38 @@ static u32 pm8001_request_msix(struct pm8001_hba_info *pm8001_ha) } #endif -static u32 pm8001_setup_irq(struct pm8001_hba_info *pm8001_ha) -{ - struct pci_dev *pdev; - - pdev = pm8001_ha->pdev; - -#ifdef PM8001_USE_MSIX - if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) - return pm8001_setup_msix(pm8001_ha); - pm8001_dbg(pm8001_ha, INIT, "MSIX not supported!!!\n"); -#endif - return 0; -} - /** * pm8001_request_irq - register interrupt * @pm8001_ha: our ha struct. */ static u32 pm8001_request_irq(struct pm8001_hba_info *pm8001_ha) { - struct pci_dev *pdev; + struct pci_dev *pdev = pm8001_ha->pdev; +#ifdef PM8001_USE_MSIX int rc; - pdev = pm8001_ha->pdev; + if (pci_find_capability(pdev, PCI_CAP_ID_MSIX)) { + rc = pm8001_setup_msix(pm8001_ha); + if (rc) { + pm8001_dbg(pm8001_ha, FAIL, + "pm8001_setup_irq failed [ret: %d]\n", rc); + return rc; + } -#ifdef PM8001_USE_MSIX - if (pdev->msix_cap && pci_msi_enabled()) - return pm8001_request_msix(pm8001_ha); - else { - pm8001_dbg(pm8001_ha, INIT, "MSIX not supported!!!\n"); - goto intx; + if (pdev->msix_cap && pci_msi_enabled()) + return pm8001_request_msix(pm8001_ha); } + + pm8001_dbg(pm8001_ha, INIT, "MSIX not supported!!!\n"); #endif -intx: /* initialize the INT-X interrupt */ pm8001_ha->irq_vector[0].irq_id = 0; pm8001_ha->irq_vector[0].drv_inst = pm8001_ha; - rc = request_irq(pdev->irq, pm8001_interrupt_handler_intx, IRQF_SHARED, - pm8001_ha->name, SHOST_TO_SAS_HA(pm8001_ha->shost)); - return rc; + + return request_irq(pdev->irq, pm8001_interrupt_handler_intx, + IRQF_SHARED, pm8001_ha->name, + SHOST_TO_SAS_HA(pm8001_ha->shost)); } /**
