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net: miiphybb: fix casting error

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Since the return value is a signed int, if the leading MSB of rdreg is a 1,
it will get signed extended and will return a negative value which is an
error even though we read the correct value.

Fixes: dfcc496ed7 ("net: mii: Changes not made by spatch")
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Chris Brandt 2017-11-03 08:30:13 -05:00 • committed by Joe Hershberger
parent f6ac626c8a
commit 33bab10457
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/miiphybb.c
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@ -232,7 +232,7 @@ static void miiphy_pre(struct bb_miiphy_bus *bus, char read,
*/
int bb_miiphy_read(struct mii_dev *miidev, int addr, int devad, int reg)
{
short rdreg; /* register working value */
unsigned short rdreg; /* register working value */
int v;
int j; /* counter */
struct bb_miiphy_bus *bus;