Patch "net: tg3: avoid uninitialized variable warning" has been added to the 3.18-stable tree

Patch "net: tg3: avoid uninitialized variable warning" has been added to the 3.18-stable tree

[gregkh]

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

    net: tg3: avoid uninitialized variable warning

to the 3.18-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:
     net-tg3-avoid-uninitialized-variable-warning.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From e434e04110704eb91acfecbd0fb8ca8e2da9c29b Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 29 Jan 2016 12:39:15 +0100
Subject: net: tg3: avoid uninitialized variable warning

From: Arnd Bergmann <arnd@arndb.de>

commit e434e04110704eb91acfecbd0fb8ca8e2da9c29b upstream.

The tg3_set_eeprom() function correctly initializes the 'start' variable,
but gcc generates a false warning:

drivers/net/ethernet/broadcom/tg3.c: In function 'tg3_set_eeprom':
drivers/net/ethernet/broadcom/tg3.c:12057:4: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]

I have not come up with a way to restructure the code in a way that
avoids the warning without making it less readable, so this adds an
initialization for the declaration to shut up that warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/ethernet/broadcom/tg3.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -12021,7 +12021,7 @@ static int tg3_set_eeprom(struct net_dev
 	int ret;
 	u32 offset, len, b_offset, odd_len;
 	u8 *buf;
-	__be32 start, end;
+	__be32 start = 0, end;
 
 	if (tg3_flag(tp, NO_NVRAM) ||
 	    eeprom->magic != TG3_EEPROM_MAGIC)


Patches currently in stable-queue which might be from arnd@arndb.de are

queue-3.18/ib-iser-fix-sparse-warnings.patch
queue-3.18/cred-userns-define-current_user_ns-as-a-function.patch
queue-3.18/pci-xilinx-fix-harmless-format-string-warning.patch
queue-3.18/alsa-ppc-awacs-shut-up-maybe-uninitialized-warning.patch
queue-3.18/net-tg3-avoid-uninitialized-variable-warning.patch
queue-3.18/mtd-avoid-stack-overflow-in-mtd-cfi-code.patch
queue-3.18/powerpc-ptrace-fix-out-of-bounds-array-access-warning.patch
queue-3.18/mlx5-avoid-build-warnings-on-32-bit.patch
queue-3.18/drbd-avoid-redefinition-of-bits_per_page.patch