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 CD64D1D6B0 for ; Wed, 4 Oct 2023 18:33:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="KtHpTYjh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BF24C433CA; Wed, 4 Oct 2023 18:33:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696444422; bh=JBU6R7/TkR8lDZuhxkhr+xXzF2RQs66DVkzJHmKLROg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KtHpTYjh+8TmzlyVWuHteKMtzkBO06V0rK8ipQBZl1NjQxWGl2r1P2PM/zk5xX4b0 LGSsacFP4l93aVpZkx7j4+qRpm+TWAZ7MfCkoiPtVuPImF7MWwF8fZIMwXjuVHDN0+ +jmuURJnkvCuQvouybtOpMJYsRDlLqIlkMgHcJEg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Richard Fitzgerald , Mark Brown , Sasha Levin Subject: [PATCH 6.5 216/321] ASoC: wm_adsp: Fix missing locking in wm_adsp_[read|write]_ctl() Date: Wed, 4 Oct 2023 19:56:01 +0200 Message-ID: <20231004175239.252315647@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231004175229.211487444@linuxfoundation.org> References: <20231004175229.211487444@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Richard Fitzgerald [ Upstream commit 781118bc2fc1026c8285f83ea7ecab07071a09c4 ] wm_adsp_read_ctl() and wm_adsp_write_ctl() must hold the cs_dsp pwr_lock mutex when calling cs_dsp_coeff_read_ctrl() and cs_dsp_coeff_write_ctrl(). Signed-off-by: Richard Fitzgerald Link: https://lore.kernel.org/r/20230913160250.3700346-1-rf@opensource.cirrus.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/wm_adsp.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 5a89abfe87846..8c20ff6808941 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -687,7 +687,10 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char *name, int type, struct wm_coeff_ctl *ctl; int ret; + mutex_lock(&dsp->cs_dsp.pwr_lock); ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len); + mutex_unlock(&dsp->cs_dsp.pwr_lock); + if (ret < 0) return ret; @@ -703,8 +706,14 @@ EXPORT_SYMBOL_GPL(wm_adsp_write_ctl); int wm_adsp_read_ctl(struct wm_adsp *dsp, const char *name, int type, unsigned int alg, void *buf, size_t len) { - return cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, alg), - 0, buf, len); + int ret; + + mutex_lock(&dsp->cs_dsp.pwr_lock); + ret = cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(&dsp->cs_dsp, name, type, alg), + 0, buf, len); + mutex_unlock(&dsp->cs_dsp.pwr_lock); + + return ret; } EXPORT_SYMBOL_GPL(wm_adsp_read_ctl); -- 2.40.1