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dsa: lan9303: Add exception logic for read failure

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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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jerry Ray 2023-01-17 14:56:59 -06:00 committed by David S. Miller
parent 1bcb5df81e
commit 601f574a1b
1 changed files with 3 additions and 1 deletions
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4
drivers/net/dsa/lan9303-core.c
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@ -911,7 +911,9 @@ static int lan9303_setup(struct dsa_switch *ds)
}
/* 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);