[PATCH 4.4 07/20] net: tg3: avoid uninitialized variable warning

From: Greg Kroah-Hartman
Date: Fri May 05 2017 - 14:36:06 EST

4.4-stable review patch. If anyone has any objections, please let me know.


From: Arnd Bergmann <arnd@xxxxxxxx>

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@xxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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
@@ -12031,7 +12031,7 @@ 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)