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authorDavid Woodhouse <David.Woodhouse@intel.com>2010-05-10 15:32:46 +0200
committerDavid Woodhouse <David.Woodhouse@intel.com>2010-05-10 15:32:46 +0200
commit0ae28a35bcb7984838acbf28bfba9c030f8b74f0 (patch)
tree4f449d929b5df9e126e839f388ff0fd2b52028a0 /arch/arm/mach-bcmring/dma.c
parentmtd: mpc5121_nfc: Changed SVR check to allow MPC5123. (diff)
parentLinux 2.6.34-rc7 (diff)
downloadlinux-0ae28a35bcb7984838acbf28bfba9c030f8b74f0.tar.xz
linux-0ae28a35bcb7984838acbf28bfba9c030f8b74f0.zip
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: drivers/mtd/mtdcore.c Pull in the bdi fixes and ARM platform changes that other outstanding patches depend on.
Diffstat (limited to 'arch/arm/mach-bcmring/dma.c')
-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 7b20fccb9d4e..29c0a911df26 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);