net: ks8851: Reassert reset pin if chip ID check fails

BugLink: https://bugs.launchpad.net/bugs/1838459
[ Upstream commit 761cfa979a0c177d6c2d93ef5585cd79ae49a7d5 ]

Commit 73fdeb82e963 ("net: ks8851: Add optional vdd_io regulator and
reset gpio") amended the ks8851 driver to briefly assert the chip's
reset pin on probe. It also amended the probe routine's error path to
reassert the reset pin if a subsequent initialization step fails.

However the commit misplaced reassertion of the reset pin in the error
path such that it is not performed if the check of the Chip ID and
Enable Register (CIDER) fails. The error path is therefore slightly
asymmetrical to the probe routine's body. Fix it.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Frank Pavlic <f.pavlic@kunbus.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c
index 556666b0d75643651de4697848815d1c9f94d0bd..546a79b9cb150973297c1be2efc9f63f310155bc 100644 (file)
--- a/drivers/net/ethernet/micrel/ks8851.c
+++ b/drivers/net/ethernet/micrel/ks8851.c
@@ -1545,9 +1545,9 @@ err_netdev:
        free_irq(ndev->irq, ks);
 
 err_irq:
+err_id:
        if (gpio_is_valid(gpio))
                gpio_set_value(gpio, 0);
-err_id:
        regulator_disable(ks->vdd_reg);
 err_reg:
        regulator_disable(ks->vdd_io);