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: Amol Lad <amol@verismonetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/arch/i386/kernel/pci-dma.c b/arch/i386/kernel/pci-dma.c
index 25fe668..5c8c6ef 100644
--- a/arch/i386/kernel/pci-dma.c
+++ b/arch/i386/kernel/pci-dma.c
@@ -75,7 +75,7 @@
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 @@
free1_out:
kfree(dev->dma_mem->bitmap);
out:
+ if (mem_base)
+ iounmap(mem_base);
return 0;
}
EXPORT_SYMBOL(dma_declare_coherent_memory);