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Subject[PATCH net-next v6 3/6] dsa: lan9303: Add exception logic for read failure
Date
While it is highly unlikely a read will ever fail, This code fragment is
now in a function that allows us to return an error code. A read failure
here will cause the lan9303_probe to fail.

Signed-off-by: Jerry Ray <jerry.ray@microchip.com>
---
drivers/net/dsa/lan9303-core.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 50470fb09cb4..8eee340f6464 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -887,7 +887,9 @@ static int lan9303_check_device(struct lan9303 *chip)
}

/* Virtual Phy: Remove Turbo 200Mbit mode */
- lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, &reg);
+ ret = lan9303_read(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, &reg);
+ if (ret)
+ return (ret);

reg &= ~LAN9303_VIRT_SPECIAL_TURBO;
regmap_write(chip->regmap, LAN9303_VIRT_SPECIAL_CTRL, reg);
--
2.17.1
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