ath9k: Add ATH9K_DEBUG configuration option

Make debugging configurable, and add a module parameter
to give the debug mask.
Add debug.c to hold all debug specific code.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath9k/debug.c b/drivers/net/wireless/ath9k/debug.c
new file mode 100644
index 000000000000..31af7cc0fa34
--- /dev/null
+++ b/drivers/net/wireless/ath9k/debug.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2008 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "core.h"
+
+static unsigned int ath9k_debug = DBG_DEFAULT;
+module_param_named(debug, ath9k_debug, uint, 0);
+
+void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...)
+{
+	if (!sc)
+		return;
+
+	if (sc->sc_debug & dbg_mask) {
+		va_list args;
+
+		va_start(args, fmt);
+		printk(KERN_DEBUG "ath9k: ");
+		vprintk(fmt, args);
+		va_end(args);
+	}
+}
+
+void ath9k_init_debug(struct ath_softc *sc)
+{
+	sc->sc_debug = ath9k_debug;
+}