PCI: Make pcibios_add_platform_entries() return errors

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@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

4 files changed, 12 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index e66064b5093a..86982112b0dd 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -1047,10 +1047,10 @@ 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 */
 }
 
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 249cca27a9b8..96d393c2da02 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -876,9 +876,9 @@ static ssize_t pci_show_devspec(struct device *dev,
 }
 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
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index e5737f0b3997..9c4a123eacd1 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -600,9 +600,9 @@ static struct bin_attribute pcie_config_attr = {
         .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)
@@ -645,10 +645,14 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
                 }
         }
         /* 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_resource_files:
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 18319aba1a57..483db814770e 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -881,7 +881,7 @@ 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 */