Changeset 2d9197e in mainline for uspace/drv/audio/sb16/dma.h

Timestamp:

2012-07-14T09:52:28Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d30292e

Parents:

a27d1c5

Message:

sb16: Return NULL rather than invalid buffer.

File:

• uspace/drv/audio/sb16/dma.h (modified) (2 diffs)

uspace/drv/audio/sb16/dma.h

@@ -35 +35 @@
 #define DRV_AUDIO_SB16_DMA_H
 
-#include <assert.h>
 #include <errno.h>
-#include <malloc.h>
 #include <mem.h>
 #include <as.h>
@@ -74 +72 @@
         uintptr_t ptr = 0;
         as_get_physical_mapping(address, &ptr);
-        ddf_log_verbose("Buffer mapped at %x.", ptr);
+        if ((ptr & 0xffffff) != ptr) {
+                ddf_log_debug("%s: Can not provide invalid buffer %x.",
+                    __FUNCTION__, ptr);
+                as_area_destroy(address);
+                return NULL;
+        }
+        ddf_log_verbose("%s: Buffer mapped at %x.", __FUNCTION__, ptr);
         return address;
 }