Messages in this thread | | | Date | Mon, 7 Nov 2022 01:40:17 +0300 | Subject | Re: [PATCH] mfd: axp20x: Do not sleep in the power off handler | From | Dmitry Osipenko <> |
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On 11/6/22 00:29, Samuel Holland wrote: > 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@sholland.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)
ARM was doing local_irq_disable() on power-off before do_kernel_power_off() was introduced, so this should've been incorrect for a couple years at least. If I'm not missing anything.
-- Best regards, Dmitry
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