linux-kernel - [PATCH 5.15 030/167] reset: Fix devm bulk optional exclusive control getter

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Date:   Tue, 19 Jul 2022 13:52:42 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Dmitry Osipenko <dmitry.osipenko@...labora.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 030/167] reset: Fix devm bulk optional exclusive control getter

From: Serge Semin <Sergey.Semin@...kalelectronics.ru>

[ Upstream commit a57f68ddc8865d59a19783080cc52fb4a11dc209 ]

Most likely due to copy-paste mistake the device managed version of the
denoted reset control getter has been implemented with invalid semantic,
which can be immediately spotted by having "WARN_ON(shared && acquired)"
warning in the system log as soon as the method is called. Anyway let's
fix it by altering the boolean arguments passed to the
__devm_reset_control_bulk_get() method from
- shared = true, optional = false, acquired = true
to
+ shared = false, optional = true, acquired = true
That's what they were supposed to be in the first place (see the non-devm
version of the same method: reset_control_bulk_get_optional_exclusive()).

Fixes: 48d71395896d ("reset: Add reset_control_bulk API")
Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@...labora.com>
Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
Link: https://lore.kernel.org/r/20220624141853.7417-2-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 include/linux/reset.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/reset.h b/include/linux/reset.h
index db0e6115a2f6..7bb583737528 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -711,7 +711,7 @@ static inline int __must_check
 devm_reset_control_bulk_get_optional_exclusive(struct device *dev, int num_rstcs,
 					       struct reset_control_bulk_data *rstcs)
 {
-	return __devm_reset_control_bulk_get(dev, num_rstcs, rstcs, true, false, true);
+	return __devm_reset_control_bulk_get(dev, num_rstcs, rstcs, false, true, true);
 }
 
 /**
-- 
2.35.1