[PATCH 2/2] Make pcibios_add_platform_entries() return errors

[Michael Ellerman]

Currently pcibios_add_platform_entries() returns void, but could fail,
so instead have it return an int and propagate errors up to
pci_create_sysfs_dev_files().

Fixes:
arch/powerpc/kernel/pci_64.c: In function 'pcibios_add_platform_entries':
arch/powerpc/kernel/pci_64.c:878: warning: ignoring return value of
	'device_create_file', declared with attribute warn_unused_result
arch/powerpc/kernel/pci_32.c: In function 'pcibios_add_platform_entries':
  arch/powerpc/kernel/pci_32.c:1043: warning: ignoring return value of
	'device_create_file', declared with attribute warn_unused_result

Signed-off-by: Michael Ellerman <michael at ellerman.id.au>
---

 arch/powerpc/kernel/pci_32.c |    4 ++--
 arch/powerpc/kernel/pci_64.c |    4 ++--
 drivers/pci/pci-sysfs.c      |   10 +++++++---
 include/linux/pci.h          |    2 +-
 4 files changed, 12 insertions(+), 8 deletions(-)

Index: powerpc/arch/powerpc/kernel/pci_32.c
===================================================================
--- powerpc.orig/arch/powerpc/kernel/pci_32.c
+++ powerpc/arch/powerpc/kernel/pci_32.c
@@ -1037,10 +1037,10 @@ void pcibios_make_OF_bus_map(void)
 #endif /* CONFIG_PPC_OF */
 
 /* Add sysfs properties */
-void pcibios_add_platform_entries(struct pci_dev *pdev)
+int pcibios_add_platform_entries(struct pci_dev *pdev)
 {
 #ifdef CONFIG_PPC_OF
-	device_create_file(&pdev->dev, &dev_attr_devspec);
+	return device_create_file(&pdev->dev, &dev_attr_devspec);
 #endif /* CONFIG_PPC_OF */
 }
 
Index: powerpc/arch/powerpc/kernel/pci_64.c
===================================================================
--- powerpc.orig/arch/powerpc/kernel/pci_64.c
+++ powerpc/arch/powerpc/kernel/pci_64.c
@@ -873,9 +873,9 @@ static ssize_t pci_show_devspec(struct d
 }
 static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL);
 
-void pcibios_add_platform_entries(struct pci_dev *pdev)
+int pcibios_add_platform_entries(struct pci_dev *pdev)
 {
-	device_create_file(&pdev->dev, &dev_attr_devspec);
+	return device_create_file(&pdev->dev, &dev_attr_devspec);
 }
 
 #define ISA_SPACE_MASK 0x1
Index: powerpc/drivers/pci/pci-sysfs.c
===================================================================
--- powerpc.orig/drivers/pci/pci-sysfs.c
+++ powerpc/drivers/pci/pci-sysfs.c
@@ -600,9 +600,9 @@ static struct bin_attribute pcie_config_
 	.write = pci_write_config,
 };
 
-void __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
+int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
 {
-	return;
+	return 0;
 }
 
 int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
@@ -644,10 +644,14 @@ int __must_check pci_create_sysfs_dev_fi
 		}
 	}
 	/* add platform-specific attributes */
-	pcibios_add_platform_entries(pdev);
+	if (pcibios_add_platform_entries(pdev))
+		goto err_rom_file;
 
 	return 0;
 
+err_rom_file:
+	if (pci_resource_len(pdev, PCI_ROM_RESOURCE))
+		sysfs_remove_bin_file(&pdev->dev.kobj, rom_attr);
 err_rom:
 	kfree(rom_attr);
 err_bin_file:
Index: powerpc/include/linux/pci.h
===================================================================
--- powerpc.orig/include/linux/pci.h
+++ powerpc/include/linux/pci.h
@@ -853,7 +853,7 @@ extern int pci_pci_problems;
 extern unsigned long pci_cardbus_io_size;
 extern unsigned long pci_cardbus_mem_size;
 
-extern void pcibios_add_platform_entries(struct pci_dev *dev);
+extern int pcibios_add_platform_entries(struct pci_dev *dev);
 
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */