This is a note to let you know that I've just added the patch titled
platform/x86/intel-uncore-freq: Return error on write frequency
to the 6.2-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:
platform-x86-intel-uncore-freq-return-error-on-write-frequency.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 75e406b540c3eca67625d97bbefd4e3787eafbfe Mon Sep 17 00:00:00 2001
From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Date: Tue, 18 Apr 2023 08:32:30 -0700
Subject: platform/x86/intel-uncore-freq: Return error on write frequency
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From: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
commit 75e406b540c3eca67625d97bbefd4e3787eafbfe upstream.
Currently when the uncore_write() returns error, it is silently
ignored. Return error to user space when uncore_write() fails.
Fixes: 49a474c7ba51 ("platform/x86: Add support for Uncore frequency control")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Reviewed-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Tested-by: Wendy Wang <wendy.wang@xxxxxxxxx>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230418153230.679094-1-srinivas.pandruvada@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
+++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c
@@ -44,14 +44,18 @@ static ssize_t store_min_max_freq_khz(st
int min_max)
{
unsigned int input;
+ int ret;
if (kstrtouint(buf, 10, &input))
return -EINVAL;
mutex_lock(&uncore_lock);
- uncore_write(data, input, min_max);
+ ret = uncore_write(data, input, min_max);
mutex_unlock(&uncore_lock);
+ if (ret)
+ return ret;
+
return count;
}
Patches currently in stable-queue which might be from srinivas.pandruvada@xxxxxxxxxxxxxxx are
queue-6.2/platform-x86-intel-uncore-freq-return-error-on-write-frequency.patch
