[2/3,v2] mceusb: buffer parsing fixups for 1st-gen device

Commit Message

Jarod Wilson Nov. 9, 2010, 9:41 p.m. UTC

None

Patch

diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c
index 1811098..ed151c8 100644
--- a/drivers/media/IR/mceusb.c
+++ b/drivers/media/IR/mceusb.c
@@ -446,7 +446,7 @@  static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
 		return;
 
 	/* skip meaningless 0xb1 0x60 header bytes on orig receiver */
-	if (ir->flags.microsoft_gen1 && !out)
+	if (ir->flags.microsoft_gen1 && !out && !offset)
 		skip = 2;
 
 	if (len <= skip)
@@ -807,6 +807,10 @@  static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
 	if (ir->flags.microsoft_gen1)
 		i = 2;
 
+	/* if there's no data, just return now */
+	if (buf_len <= i)
+		return;
+
 	for (; i < buf_len; i++) {
 		switch (ir->parser_state) {
 		case SUBCMD: