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[patch 1/1] rt2x00: fix "buffer size not provably correct" build warning

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rt2x00 debugfs interface doesn't check the size of the data coming
from userspace, leading to a build warning. Fix That.

Signed-off-by: Arnaud Patard <arnaud.patard@xxxxxxxxxxx>

Index: rt2x00/drivers/net/wireless/rt2x00/rt2x00debug.c
===================================================================
--- rt2x00.orig/drivers/net/wireless/rt2x00/rt2x00debug.c	2010-08-23 00:21:42.637941244 +0200
+++ rt2x00/drivers/net/wireless/rt2x00/rt2x00debug.c	2010-08-23 00:33:41.237941022 +0200
@@ -480,6 +480,8 @@ static ssize_t rt2x00debug_write_##__nam
 	if (index >= debug->__name.word_count)			\
 		return -EINVAL;					\
 								\
+	if (length > sizeof(line))				\
+		length = sizeof(line);				\
 	if (copy_from_user(line, buf, length))			\
 		return -EFAULT;					\
 								\


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