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[RESEND,5.10.y-cip,04/13] thermal/drivers/rz2gl: Add error check for reset_control_deassert()

Message ID 20220715073916.2321319-5-biju.das.jz@bp.renesas.com (mailing list archive)
State Not Applicable
Headers show
Series Add thermal driver and watchdog driver enhancements | expand

Commit Message

Biju Das July 15, 2022, 7:39 a.m. UTC 
commit 8ee1c0f6526ce942b7595951c7bb0165010051c2 upstream.

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 bail out in case of error.

While at it replace the parameter "&pdev->dev" -> "dev" in
devm_reset_control_get_exclusive().

Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20211208164010.4130-1-biju.das.jz@bp.renesas.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/thermal/rzg2l_thermal.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/thermal/rzg2l_thermal.c b/drivers/thermal/rzg2l_thermal.c
index d47d4a30cd6c..7a9cdc1f37ca 100644
--- a/drivers/thermal/rzg2l_thermal.c
+++ b/drivers/thermal/rzg2l_thermal.c
@@ -170,12 +170,14 @@  static int rzg2l_thermal_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->base);
 
 	priv->dev = dev;
-	priv->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	priv->rstc = devm_reset_control_get_exclusive(dev, NULL);
 	if (IS_ERR(priv->rstc))
 		return dev_err_probe(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(dev);
 	pm_runtime_get_sync(dev);