Commit ec04b075 authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

iomap: implement pcim_iounmap_regions() 



Implement pcim_iounmap_regions() - the opposite of
pcim_iomap_regions().

Signed-off-by: default avatarTejun heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent a73984a0

include/linux/pci.h

+1 −0
Original line number Diff line number Diff line
@@ -838,6 +838,7 @@ void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); 
void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);

void __iomem * const * pcim_iomap_table(struct pci_dev *pdev);

int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);

void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);



extern int pci_pci_problems;

#define PCIPCI_FAIL		1	/* No PCI PCI DMA */

lib/devres.c

+26 −0
Original line number Diff line number Diff line
@@ -296,5 +296,31 @@ int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name) 
	return rc;

}

EXPORT_SYMBOL(pcim_iomap_regions);



/**

 * pcim_iounmap_regions - Unmap and release PCI BARs

 * @pdev: PCI device to map IO resources for

 * @mask: Mask of BARs to unmap and release

 *

 * Unamp and release regions specified by @mask.

 */

void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask)

{

	void __iomem * const *iomap;

	int i;



	iomap = pcim_iomap_table(pdev);

	if (!iomap)

		return;



	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {

		if (!(mask & (1 << i)))

			continue;



		pcim_iounmap(pdev, iomap[i]);

		pci_release_region(pdev, i);

	}

}

EXPORT_SYMBOL(pcim_iounmap_regions);

#endif

#endif