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>
diff --git a/sound/firewire/iso-resources.h b/sound/firewire/iso-resources.h
index 9feb9f8..3f0730e4 100644
--- a/sound/firewire/iso-resources.h
+++ b/sound/firewire/iso-resources.h
@@ -24,11 +24,11 @@
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,