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Commit 039d09a8 authored by Amol Lad's avatar Amol Lad Committed by Greg Kroah-Hartman
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PCI: arch/i386/kernel/pci-dma.c: ioremap balanced with iounmap 



ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Tested (compilation only):
- using allmodconfig
- making sure the files are compiling without any warning/error due to
new changes

Signed-off-by: default avatarAmol Lad <amol@verismonetworks.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7edab2f0

arch/i386/kernel/pci-dma.c

+3 −1
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ EXPORT_SYMBOL(dma_free_coherent); 
int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,

				dma_addr_t device_addr, size_t size, int flags)

{

	void __iomem *mem_base;

	void __iomem *mem_base = NULL;

	int pages = size >> PAGE_SHIFT;

	int bitmap_size = (pages + 31)/32;
@@ -114,6 +114,8 @@ int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr, 
 free1_out:

	kfree(dev->dma_mem->bitmap);

 out:

	if (mem_base)

		iounmap(mem_base);

	return 0;

}

EXPORT_SYMBOL(dma_declare_coherent_memory);