ALSA: firewire-lib: allocate DMA buffer separately

For correct cache coherency on some architectures, DMA buffers must be
allocated in a different cache line than data that is concurrently used
by the CPU.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/sound/firewire/iso-resources.h b/sound/firewire/iso-resources.h
index 9feb9f8d4745..3f0730e4d841 100644
--- a/sound/firewire/iso-resources.h
+++ b/sound/firewire/iso-resources.h
@@ -24,11 +24,11 @@ struct fw_iso_resources {
         unsigned int bandwidth_overhead;
         int generation; /* in which allocation is valid */
         bool allocated;
-        __be32 buffer[2];
+        __be32 *buffer;
 };
 
-void fw_iso_resources_init(struct fw_iso_resources *r,
-                           struct fw_unit *unit);
+int fw_iso_resources_init(struct fw_iso_resources *r,
+                          struct fw_unit *unit);
 void fw_iso_resources_destroy(struct fw_iso_resources *r);
 
 int fw_iso_resources_allocate(struct fw_iso_resources *r,