1 files changed, 82 insertions, 0 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_util.c b/drivers/net/wireless/zd1211rw/zd_util.c
new file mode 100644
index 0000000000000..d20036c15d11b
--- /dev/null
+++ b/drivers/net/wireless/zd1211rw/zd_util.c
@@ -0,0 +1,82 @@
+/* zd_util.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Utility program
+ */
+
+#include "zd_def.h"
+#include "zd_util.h"
+
+#ifdef DEBUG
+static char hex(u8 v)
+{
+	v &= 0xf;
+	return (v < 10 ? '0' : 'a' - 10) + v;
+}
+
+static char hex_print(u8 c)
+{
+	return (0x20 <= c && c < 0x7f) ? c : '.';
+}
+
+static void dump_line(const u8 *bytes, size_t size)
+{
+	char c;
+	size_t i;
+
+	size = size <= 8 ? size : 8;
+	printk(KERN_DEBUG "zd1211 %p ", bytes);
+	for (i = 0; i < 8; i++) {
+		switch (i) {
+		case 1:
+		case 5:
+			c = '.';
+			break;
+		case 3:
+			c = ':';
+			break;
+		default:
+			c = ' ';
+		}
+		if (i < size) {
+			printk("%c%c%c", hex(bytes[i] >> 4), hex(bytes[i]), c);
+		} else {
+			printk("  %c", c);
+		}
+	}
+
+	for (i = 0; i < size; i++)
+		printk("%c", hex_print(bytes[i]));
+	printk("\n");
+}
+
+void zd_hexdump(const void *bytes, size_t size)
+{
+	size_t i = 0;
+
+	do {
+		dump_line((u8 *)bytes + i, size-i);
+		i += 8;
+	} while (i < size);
+}
+#endif /* DEBUG */
+
+void *zd_tail(const void *buffer, size_t buffer_size, size_t tail_size)
+{
+	if (buffer_size < tail_size)
+		return NULL;
+	return (u8 *)buffer + (buffer_size - tail_size);
+}