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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2bf239fd84fsm132766305ad.23.2026.06.02.03.16.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Jun 2026 03:17:03 -0700 (PDT) From: phucduc.bui@gmail.com To: Heiko Stuebner , Mark Brown , Liam Girdwood , Krzysztof Kozlowski Cc: Rob Herring , Conor Dooley , Jaroslav Kysela , Takashi Iwai , devicetree@vger.kernel.org, linux-sound@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, bui duc phuc , Sashiko AI Review Subject: [PATCH v2 5/5] ASoC: rockchip: rockchip_pdm: Handle runtime PM resume failures in set_fmt Date: Tue, 2 Jun 2026 17:16:08 +0700 Message-ID: <20260602101608.45137-6-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260602101608.45137-1-phucduc.bui@gmail.com> References: <20260602101608.45137-1-phucduc.bui@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc rockchip_pdm_set_fmt() calls pm_runtime_get_sync() before accessing hardware registers, but ignores its return value. If the runtime resume fails, the function continues to perform register accesses while the device state is undefined. Replace pm_runtime_get_sync() with pm_runtime_resume_and_get() and return early on failure to avoid unpowered register accesses. Reported-by: Sashiko AI Review Closes: https://lore.kernel.org/all/20260522110302.349421F000E9@smtp.kernel.org/ Signed-off-by: bui duc phuc --- NOTE: This patch is compile-tested only. Please help test if you have the relevant Rockchip hardware. sound/soc/rockchip/rockchip_pdm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c index 8f78f7bc1806..115e90d3bbfe 100644 --- a/sound/soc/rockchip/rockchip_pdm.c +++ b/sound/soc/rockchip/rockchip_pdm.c @@ -321,6 +321,7 @@ static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai, { struct rk_pdm_dev *pdm = to_info(cpu_dai); unsigned int mask = 0, val = 0; + int ret; mask = PDM_CKP_MSK; switch (fmt & SND_SOC_DAIFMT_INV_MASK) { @@ -334,7 +335,10 @@ static int rockchip_pdm_set_fmt(struct snd_soc_dai *cpu_dai, return -EINVAL; } - pm_runtime_get_sync(cpu_dai->dev); + ret = pm_runtime_resume_and_get(cpu_dai->dev); + if (ret) + return ret; + regmap_update_bits(pdm->regmap, PDM_CLK_CTRL, mask, val); pm_runtime_put(cpu_dai->dev); -- 2.43.0