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firmware: exynos-acpm: allow use during system shutdown

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We need to access the PMIC during late system shutdown and at that time
we are not allowed to sleep anymore.

To make this case work, and since we can't detect this case in a
non-racy way, switch to using udelay() unconditionally, instead of
usleep_range().

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Link: https://lore.kernel.org/r/20250325-acpm-atomic-v3-2-c66aae7df925@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
André Draszik
2025-03-25 09:46:08 +00:00
committed by Krzysztof Kozlowski
parent d2098981eb
commit 2d14c680e9
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/samsung/exynos-acpm.c
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@@ -300,7 +300,7 @@ static int acpm_dequeue_by_polling(struct acpm_chan *achan,
return 0;
/* Determined experimentally. */
usleep_range(20, 30);
udelay(20);
} while (ktime_before(ktime_get(), timeout));
dev_err(dev, "Timeout! ch:%u s:%u bitmap:%lx.\n",