The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 75e406b540c3eca67625d97bbefd4e3787eafbfe # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023051324-calm-crummy-b754@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

75e406b540c3 ("platform/x86/intel-uncore-freq: Return error on write frequency") dbce412a7733 ("platform/x86/intel-uncore-freq: Split common and enumeration part") 414eef27283a ("platform/x86/intel/uncore-freq: Display uncore current frequency") ae7b2ce57851 ("platform/x86/intel/uncore-freq: Use sysfs API to create attributes") ce2645c458b5 ("platform/x86/intel/uncore-freq: Move to uncore-frequency folder") 6dc69d3d0d18 ("Merge tag 'driver-core-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 75e406b540c3eca67625d97bbefd4e3787eafbfe Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada srinivas.pandruvada@linux.intel.com Date: Tue, 18 Apr 2023 08:32:30 -0700 Subject: [PATCH] platform/x86/intel-uncore-freq: Return error on write frequency MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

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@linux.intel.com Reviewed-by: Zhang Rui rui.zhang@intel.com Tested-by: Wendy Wang wendy.wang@intel.com Reviewed-by: Ilpo Järvinen ilpo.jarvinen@linux.intel.com Link: https://lore.kernel.org/r/20230418153230.679094-1-srinivas.pandruvada@linux.... Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede hdegoede@redhat.com

diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-common.c index 1a300e14f350..064f186ae81b 100644 --- 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(struct uncore_data *data, 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; }