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net: ravb: Check return value of reset_control_deassert()

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[ Upstream commit d8eb6ea4b302e7ff78535c205510e359ac10a0bd ]

reset_control_deassert() could return an error. Some devices cannot work
if reset signal de-assert operation fails. To avoid this check the return
code of reset_control_deassert() in ravb_probe() and take proper action.

Along with it, the free_netdev() call from the error path was moved after
reset_control_assert() on its own label (out_free_netdev) to free
netdev in case reset_control_deassert() fails.

Fixes: 0d13a1a464 ("ravb: Add reset support")
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Claudiu Beznea 2023-11-28 10:04:34 +02:00 committed by Greg Kroah-Hartman
parent 7ed2e4c2d0
commit 149b2fe12a
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/renesas/ravb_main.c
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@ -2670,7 +2670,10 @@ static int ravb_probe(struct platform_device *pdev)
ndev->features = info->net_features;
ndev->hw_features = info->net_hw_features;
reset_control_deassert(rstc);
error = reset_control_deassert(rstc);
if (error)
goto out_free_netdev;
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
@ -2897,11 +2900,11 @@ static int ravb_probe(struct platform_device *pdev)
out_disable_refclk:
clk_disable_unprepare(priv->refclk);
out_release:
free_netdev(ndev);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
reset_control_assert(rstc);
out_free_netdev:
free_netdev(ndev);
return error;
}