linux-kernel - [PATCH] mfd: axp20x: Do not sleep in the power off handler

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Date:   Sat,  5 Nov 2022 16:29:09 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Chen-Yu Tsai <wens@...e.org>, Lee Jones <lee@...nel.org>
Cc:     Samuel Holland <samuel@...lland.org>,
        Dmitry Osipenko <dmitry.osipenko@...labora.com>,
        Michał Mirosław <mirq-linux@...e.qmqm.pl>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mfd: axp20x: Do not sleep in the power off handler

Since commit 856c288b0039 ("ARM: Use do_kernel_power_off()"), the
function axp20x_power_off() now runs inside a RCU read-side critical
section, so it is not allowed to call msleep(). Use mdelay() instead.

Fixes: 856c288b0039 ("ARM: Use do_kernel_power_off()")
Signed-off-by: Samuel Holland <samuel@...lland.org>
---

 drivers/mfd/axp20x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 88a212a8168c..880c41fa7021 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -842,7 +842,7 @@ static void axp20x_power_off(void)
 		     AXP20X_OFF);
 
 	/* Give capacitors etc. time to drain to avoid kernel panic msg. */
-	msleep(500);
+	mdelay(500);
 }
 
 int axp20x_match_device(struct axp20x_dev *axp20x)
-- 
2.37.3