From 61549b7414b6dbae38585df3ded1eb52494ad111 Mon Sep 17 00:00:00 2001 From: Srinivas Pandruvada 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=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Zhang Rui Tested-by: Wendy Wang Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20230418153230.679094-1-srinivas.pandruvada@linux.intel.com Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman --- .../platform/x86/intel/uncore-frequency/uncore-frequency-common.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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 cb24de9..fa8f14c 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; } -- 2.7.4