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Commit e416de5e authored by Alan Cox's avatar Alan Cox Committed by David Woodhouse
Browse files

Export the ROM enable/disable helpers 



.... so that they can be used by MTD map drivers. Lets us close #9420

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 3afe7eb3

drivers/pci/rom.c

+4 −2
Original line number Diff line number Diff line
@@ -21,7 +21,7 @@ 
 * between the ROM and other resources, so enabling it may disable access

 * to MMIO registers or other card memory.

 */

static int pci_enable_rom(struct pci_dev *pdev)

int pci_enable_rom(struct pci_dev *pdev)

{

	struct resource *res = pdev->resource + PCI_ROM_RESOURCE;

	struct pci_bus_region region;
@@ -45,7 +45,7 @@ static int pci_enable_rom(struct pci_dev *pdev) 
 * Disable ROM decoding on a PCI device by turning off the last bit in the

 * ROM BAR.

 */

static void pci_disable_rom(struct pci_dev *pdev)

void pci_disable_rom(struct pci_dev *pdev)

{

	u32 rom_addr;

	pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr);
@@ -260,3 +260,5 @@ void pci_cleanup_rom(struct pci_dev *pdev) 


EXPORT_SYMBOL(pci_map_rom);

EXPORT_SYMBOL(pci_unmap_rom);

EXPORT_SYMBOL_GPL(pci_enable_rom);

EXPORT_SYMBOL_GPL(pci_disable_rom);

include/linux/pci.h

+2 −0
Original line number Diff line number Diff line
@@ -631,6 +631,8 @@ int __must_check pci_assign_resource(struct pci_dev *dev, int i); 
int pci_select_bars(struct pci_dev *dev, unsigned long flags);



/* ROM control related routines */

int pci_enable_rom(struct pci_dev *pdev);

void pci_disable_rom(struct pci_dev *pdev);

void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);

void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);

size_t pci_get_rom_size(void __iomem *rom, size_t size);