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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-05-17 17:24:04 +0100
commitac1d426e825ab5778995f2f6f053ca2e6b45c622 (patch)
tree75b91356ca39463e0112931aa6790802fb1e07a2 /arch/arm/mach-bcmring
parentfda0e18c8a7a3e02747c2b045b4fcd2c920410b9 (diff)
parenta3685f00652af83f12b63e3b4ef48f29581ba48b (diff)
Merge branch 'devel-stable' into devel
Conflicts: arch/arm/Kconfig arch/arm/include/asm/system.h arch/arm/mm/Kconfig
Diffstat (limited to 'arch/arm/mach-bcmring')
-rw-r--r--arch/arm/mach-bcmring/dma.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm/mach-bcmring/dma.c b/arch/arm/mach-bcmring/dma.c
index 7b20fccb9d4..29c0a911df2 100644
--- a/arch/arm/mach-bcmring/dma.c
+++ b/arch/arm/mach-bcmring/dma.c
@@ -28,6 +28,7 @@
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/proc_fs.h>
+#include <linux/slab.h>
#include <mach/timer.h>
@@ -2220,11 +2221,15 @@ EXPORT_SYMBOL(dma_map_create_descriptor_ring);
int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */
int dirtied /* non-zero if any of the pages were modified */
) {
+
+ int rc = 0;
int regionIdx;
int segmentIdx;
DMA_Region_t *region;
DMA_Segment_t *segment;
+ down(&memMap->lock);
+
for (regionIdx = 0; regionIdx < memMap->numRegionsUsed; regionIdx++) {
region = &memMap->region[regionIdx];
@@ -2238,7 +2243,8 @@ int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */
printk(KERN_ERR
"%s: vmalloc'd pages are not yet supported\n",
__func__);
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
case DMA_MEM_TYPE_KMALLOC:
@@ -2275,7 +2281,8 @@ int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */
printk(KERN_ERR
"%s: Unsupported memory type: %d\n",
__func__, region->memType);
- return -EINVAL;
+ rc = -EINVAL;
+ goto out;
}
}
@@ -2313,9 +2320,10 @@ int dma_unmap(DMA_MemMap_t *memMap, /* Stores state information about the map */
memMap->numRegionsUsed = 0;
memMap->inUse = 0;
+out:
up(&memMap->lock);
- return 0;
+ return rc;
}
EXPORT_SYMBOL(dma_unmap);