Patch "printk: fix parsing of "brl=" option" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

printk: fix parsing of "brl=" option

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
printk-fix-parsing-of-brl-option.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Nicolas Iooss <[email protected]>
Date: Thu, 25 Aug 2016 15:17:00 -0700
Subject: printk: fix parsing of "brl=" option

From: Nicolas Iooss <[email protected]>

commit ae6c33ba6e37eea3012fe2640b22400ef3f2d0f3 upstream.

Commit bbeddf52adc1 ("printk: move braille console support into separate braille.[ch] files") moved the parsing of braille-related options into _braille_console_setup(), changing the type of variable str from char* to char**. In this commit, memcmp(str, "brl,", 4) was correctly updated to memcmp(*str, "brl,", 4) but not memcmp(str, "brl=", 4).

Update the code to make "brl=" option work again and replace memcmp() with strncmp() to make the compiler able to detect such an issue.

---
 kernel/printk/braille.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -9,10 +9,10 @@
 
 char *_braille_console_setup(char **str, char **brl_options)
 {
-	if (!memcmp(*str, "brl,", 4)) {
+	if (!strncmp(*str, "brl,", 4)) {
 		*brl_options = "";
 		*str += 4;
-	} else if (!memcmp(str, "brl=", 4)) {
+	} else if (!strncmp(*str, "brl=", 4)) {
 		*brl_options = *str + 4;
 		*str = strchr(*brl_options, ',');
 		if (!*str)

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/printk-fix-parsing-of-brl-option.patch