From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 861E081ADA; Tue, 3 Dec 2024 16:13:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733242417; cv=none; b=mdoGrv/cqhmw7nJq4JQcvM+jLI7rgOp9e7ZFC5Z1gTeAA1roraAPzYj6y7kuWVgfOtxxzfCgXdzuNPnlO1vkfBiLRyIvY/XoAMA3IZoedtwhLtvHPshNYHTkp1VkkGB9MQo4UyUiuag+4f4AfVt291IzbtmyYEmuamFR2riGfw4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733242417; c=relaxed/simple; bh=tkinyAk0lvCEkzyt7sAhjSRmTuYZMPEOqHdsXqhB8Oc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hLAGeLM9C1Nl60jstxQAlMnP2WtNFS31A7lb8ic+WPLoCjsUfwM6kW98yvn3sT7m6C/9+omDTZI+K1bvPc87omoLJ+Ek2yyAc9MHZaKW5Hw9VUJ/EAI0oy/8V+EWjHqR6VNafKg2XdLbR2ysB/MPBQMgO2w2eOFyUk6/j3yc13c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Afz40fg+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Afz40fg+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08CF0C4CED6; Tue, 3 Dec 2024 16:13:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1733242417; bh=tkinyAk0lvCEkzyt7sAhjSRmTuYZMPEOqHdsXqhB8Oc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Afz40fg+kGZSTAnvBb6ble7efekvqrHtQOoKiwR24Wk3tasS4S0enbu34TLeBSLvJ AE5oOpetXSZDidqkwqg44Hiwd0EvxW4ng4zXP1phGXXvqidqJhoQkKePNXkjuv+skF LL1E6ymjof0XxHe7BRU4NQ80Ft4cnm8NPKJMDTY4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lukasz Luba , Jinjie Ruan , Viresh Kumar Subject: [PATCH 6.12 698/826] cpufreq: mediatek-hw: Fix wrong return value in mtk_cpufreq_get_cpu_power() Date: Tue, 3 Dec 2024 15:47:05 +0100 Message-ID: <20241203144810.985721031@linuxfoundation.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241203144743.428732212@linuxfoundation.org> References: <20241203144743.428732212@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jinjie Ruan commit 172bf5ed04cb6c9e66d58de003938ed5c8756570 upstream. mtk_cpufreq_get_cpu_power() return 0 if the policy is NULL. Then in em_create_perf_table(), the later zero check for power is not invalid as power is uninitialized. As Lukasz suggested, it must return -EINVAL when the 'policy' is not found. So return -EINVAL to fix it. Cc: stable@vger.kernel.org Fixes: 4855e26bcf4d ("cpufreq: mediatek-hw: Add support for CPUFREQ HW") Reviewed-by: Lukasz Luba Suggested-by: Lukasz Luba Signed-off-by: Jinjie Ruan Signed-off-by: Viresh Kumar Signed-off-by: Greg Kroah-Hartman --- drivers/cpufreq/mediatek-cpufreq-hw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/cpufreq/mediatek-cpufreq-hw.c +++ b/drivers/cpufreq/mediatek-cpufreq-hw.c @@ -62,7 +62,7 @@ mtk_cpufreq_get_cpu_power(struct device policy = cpufreq_cpu_get_raw(cpu_dev->id); if (!policy) - return 0; + return -EINVAL; data = policy->driver_data;