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watchdog: rzg2l_wdt: Add error check for reset_control_deassert

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If reset_control_deassert() fails, then we won't be able to
access the device registers. Therefore check the return code of
reset_control_deassert() and bailout in case of error.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220225175320.11041-6-biju.das.jz@bp.renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Biju Das 2022-02-25 17:53:18 +00:00 committed by Wim Van Sebroeck
parent 33d04d0fdb
commit baf1aace9a
1 changed files with 4 additions and 1 deletions
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5
drivers/watchdog/rzg2l_wdt.c
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@ -203,7 +203,10 @@ static int rzg2l_wdt_probe(struct platform_device *pdev)
return dev_err_probe(&pdev->dev, PTR_ERR(priv->rstc),
"failed to get cpg reset");
reset_control_deassert(priv->rstc);
ret = reset_control_deassert(priv->rstc);
if (ret)
return dev_err_probe(dev, ret, "failed to deassert");
pm_runtime_enable(&pdev->dev);
priv->wdev.info = &rzg2l_wdt_ident;