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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/powerpc/kernel/eeh_sysfs.c
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@@ -1,24 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Sysfs entries for PCI Error Recovery for PAPR-compliant platform.
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  * Copyright IBM Corporation 2007
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  * Copyright Linas Vepstas <linas@austin.ibm.com> 2007
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- *
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- * All rights reserved.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or (at
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- * your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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- * NON INFRINGEMENT.  See the GNU General Public License for more
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- * details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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  *
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  * Send comments and feedback to Linas Vepstas <linas@austin.ibm.com>
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  */
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@@ -30,7 +14,7 @@
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 /**
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  * EEH_SHOW_ATTR -- Create sysfs entry for eeh statistic
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  * @_name: name of file in sysfs directory
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- * @_memb: name of member in struct pci_dn to access
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+ * @_memb: name of member in struct eeh_dev to access
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  * @_format: printf format for display
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  *
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  * All of the attributes look very similar, so just
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@@ -82,15 +66,16 @@
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 	if (!(edev->pe->state & EEH_PE_ISOLATED))
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 		return count;
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-	if (eeh_unfreeze_pe(edev->pe, true))
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+	if (eeh_unfreeze_pe(edev->pe))
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 		return -EIO;
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+	eeh_pe_state_clear(edev->pe, EEH_PE_ISOLATED, true);
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 	return count;
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 }
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 static DEVICE_ATTR_RW(eeh_pe_state);
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-#ifdef CONFIG_PCI_IOV
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+#if defined(CONFIG_PCI_IOV) && defined(CONFIG_PPC_PSERIES)
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 static ssize_t eeh_notify_resume_show(struct device *dev,
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 				      struct device_attribute *attr, char *buf)
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 {
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@@ -101,7 +86,6 @@
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 	if (!edev || !edev->pe)
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 		return -ENODEV;
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-	pdn = pci_get_pdn(pdev);
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 	return sprintf(buf, "%d\n", pdn->last_allow_rc);
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 }
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@@ -115,7 +99,7 @@
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 	if (!edev || !edev->pe || !eeh_ops->notify_resume)
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 		return -ENODEV;
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-	if (eeh_ops->notify_resume(pci_get_pdn(pdev)))
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+	if (eeh_ops->notify_resume(edev))
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 		return -EIO;
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 	return count;
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@@ -147,7 +131,7 @@
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 #else
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 static inline int eeh_notify_resume_add(struct pci_dev *pdev) { return 0; }
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 static inline void eeh_notify_resume_remove(struct pci_dev *pdev) { }
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-#endif /* CONFIG_PCI_IOV */
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+#endif /* CONFIG_PCI_IOV && CONFIG PPC_PSERIES*/
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 void eeh_sysfs_add_device(struct pci_dev *pdev)
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 {
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@@ -175,22 +159,23 @@
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 {
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 	struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev);
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+	if (!edev) {
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+		WARN_ON(eeh_enabled());
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+		return;
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+	}
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+
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+	edev->mode &= ~EEH_DEV_SYSFS;
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+
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 	/*
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 	 * The parent directory might have been removed. We needn't
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 	 * continue for that case.
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 	 */
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-	if (!pdev->dev.kobj.sd) {
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-		if (edev)
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-			edev->mode &= ~EEH_DEV_SYSFS;
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+	if (!pdev->dev.kobj.sd)
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 		return;
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-	}
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 	device_remove_file(&pdev->dev, &dev_attr_eeh_mode);
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 	device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
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 	device_remove_file(&pdev->dev, &dev_attr_eeh_pe_state);
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 	eeh_notify_resume_remove(pdev);
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-
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-	if (edev)
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-		edev->mode &= ~EEH_DEV_SYSFS;
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 }