From 47cc8c1cc2f2d9889e84d59cbbe8cb1cc6e24ed1 Mon Sep 17 00:00:00 2001 From: Sam Bobroff Date: Fri, 25 May 2018 13:11:37 +1000 Subject: [PATCH] powerpc/eeh: Introduce eeh_set_channel_state() To ease future refactoring, extract setting of the channel state from the report functions out into their own functions. This increases the amount of code that is identical across all of the report functions. Signed-off-by: Sam Bobroff Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/eeh_driver.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 127f2bb41e38..52b5acdab0f3 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -205,6 +205,17 @@ static void *eeh_dev_save_state(struct eeh_dev *edev, void *userdata) return NULL; } +static void eeh_set_channel_state(struct eeh_pe *root, enum pci_channel_state s) +{ + struct eeh_pe *pe; + struct eeh_dev *edev, *tmp; + + eeh_for_each_pe(root, pe) + eeh_pe_for_each_dev(pe, edev, tmp) + if (eeh_edev_actionable(edev)) + edev->pdev->error_state = s; +} + /** * eeh_report_error - Report pci error to each device driver * @data: eeh device @@ -224,7 +235,6 @@ static void *eeh_report_error(struct eeh_dev *edev, void *userdata) return NULL; device_lock(&dev->dev); - dev->error_state = pci_channel_io_frozen; driver = eeh_pcid_get(dev); if (!driver) goto out_no_dev; @@ -307,7 +317,6 @@ static void *eeh_report_reset(struct eeh_dev *edev, void *userdata) return NULL; device_lock(&dev->dev); - dev->error_state = pci_channel_io_normal; driver = eeh_pcid_get(dev); if (!driver) goto out_no_dev; @@ -377,7 +386,6 @@ static void *eeh_report_resume(struct eeh_dev *edev, void *userdata) return NULL; device_lock(&dev->dev); - dev->error_state = pci_channel_io_normal; driver = eeh_pcid_get(dev); if (!driver) goto out_no_dev; @@ -801,6 +809,7 @@ void eeh_handle_normal_event(struct eeh_pe *pe) * hotplug for this case. */ pr_info("EEH: Notify device drivers to shutdown\n"); + eeh_set_channel_state(pe, pci_channel_io_frozen); eeh_pe_dev_traverse(pe, eeh_report_error, &result); if ((pe->type & EEH_PE_PHB) && result != PCI_ERS_RESULT_NONE && @@ -891,6 +900,7 @@ void eeh_handle_normal_event(struct eeh_pe *pe) pr_info("EEH: Notify device drivers " "the completion of reset\n"); result = PCI_ERS_RESULT_NONE; + eeh_set_channel_state(pe, pci_channel_io_normal); eeh_pe_dev_traverse(pe, eeh_report_reset, &result); } @@ -912,6 +922,7 @@ void eeh_handle_normal_event(struct eeh_pe *pe) /* Tell all device drivers that they can resume operations */ pr_info("EEH: Notify device driver to resume\n"); + eeh_set_channel_state(pe, pci_channel_io_normal); eeh_pe_dev_traverse(pe, eeh_report_resume, NULL); pr_info("EEH: Recovery successful.\n"); @@ -930,6 +941,7 @@ void eeh_handle_normal_event(struct eeh_pe *pe) eeh_slot_error_detail(pe, EEH_LOG_PERM); /* Notify all devices that they're about to go down. */ + eeh_set_channel_state(pe, pci_channel_io_perm_failure); eeh_pe_dev_traverse(pe, eeh_report_failure, NULL); /* Mark the PE to be removed permanently */ @@ -1039,6 +1051,7 @@ void eeh_handle_special_event(void) /* Notify all devices to be down */ eeh_pe_state_clear(pe, EEH_PE_PRI_BUS); + eeh_set_channel_state(pe, pci_channel_io_perm_failure); eeh_pe_dev_traverse(pe, eeh_report_failure, NULL); bus = eeh_pe_bus_get(phb_pe); -- GitLab