[PATCH] sound/oss/trident.c [1/2] merge driver from 2.4-ac

This patch (1/2) brings the sound/oss/trident.c driver up to date with
the driver in the 2.4-ac tree. It fixes the following bugs:

* fix wrong cast in suspend/resume (Eric Lemar via Ian Soboroff)

* fix bug where we would free with free_pages() memory allocated via
pci_alloc_consistent().

* add a missing unlock on an error path.

* rewrite the code to read/write registers of audio codecs for Ali5451
(Lei Hu)

It also does various cleanups so that the code conforms to
Documentation/CodingStyle and is nicer to work with.

sound/oss/trident.h

@@ -360,5 +360,16 @@ static inline unsigned ld2(unsigned int x)
 	return r;
 }
 
-#endif /* __TRID4DWAVE_H */
+#ifdef DEBUG
+
+#define TRDBG(msg, args...) do {          \
+        printk(KERN_DEBUG msg , ##args ); \
+} while (0)
+
+#else /* !defined(DEBUG) */ 
 
+#define TRDBG(msg, args...) do { } while (0)
+
+#endif /* DEBUG */ 
+
+#endif /* __TRID4DWAVE_H */