This is a note to let you know that I've just added the patch titled
ACPI: LPSS: Fix the fractional clock divider flags
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-lpss-fix-the-fractional-clock-divider-flags.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 348a022133d762d771d9088696f96643e60264fd
Author: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Mon Dec 11 13:14:29 2023 +0200
ACPI: LPSS: Fix the fractional clock divider flags
[ Upstream commit 3ebccf1d1ca74bbb78e6f8c38d1d172e468d91f8 ]
The conversion to CLK_FRAC_DIVIDER_POWER_OF_TWO_PS uses wrong flags
in the parameters and hence miscalculates the values in the clock
divider. Fix this by applying the flag to the proper parameter.
Fixes: 82f53f9ee577 ("clk: fractional-divider: Introduce POWER_OF_TWO_PS flag")
Reported-by: Alex Vinarskis <alex.vinarskis@xxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index f609f9d62efd..332befb5f579 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -439,8 +439,9 @@ static int register_device_clock(struct acpi_device *adev,
if (!clk_name)
return -ENOMEM;
clk = clk_register_fractional_divider(NULL, clk_name, parent,
+ 0, prv_base, 1, 15, 16, 15,
CLK_FRAC_DIVIDER_POWER_OF_TWO_PS,
- prv_base, 1, 15, 16, 15, 0, NULL);
+ NULL);
parent = clk_name;
clk_name = kasprintf(GFP_KERNEL, "%s-update", devname);
