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Mon, 09 Dec 2024 04:00:40 -0800 (PST) From: Krzysztof Kozlowski Date: Mon, 09 Dec 2024 13:00:28 +0100 Subject: [PATCH RESEND 1/3] ASoC: codecs: wcd937x: Simplify locking with guard() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241209-cleanup-h-guard-of-node-asoc-v1-1-397f6385e4a5@linaro.org> References: <20241209-cleanup-h-guard-of-node-asoc-v1-0-397f6385e4a5@linaro.org> In-Reply-To: <20241209-cleanup-h-guard-of-node-asoc-v1-0-397f6385e4a5@linaro.org> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai Cc: linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2424; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=AfvDk3kCBindu1M/SPA1g+/8ocBf4bQNvfgLlw3/usE=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBnVtvkzZBmR2PooyNA+BCY/u9Ie6qgnsWOoxo8u nYzUrYVz2KJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZ1bb5AAKCRDBN2bmhouD 1/jKD/9auacR6d7c3PeOsT6ExgOSLR4E+xafo5iH+maYepzSK5CNhhvW3w7W9V++wZGcsc21l1z wS7cYpCttuCmJQ8WDsax4eAqMbWdeAiOCFDZzYT+Rgp/Us0MF6NvNKSU2hY8tUY65lQstuQ3/gc NxU0Q45edcfd0I4uLUA53ZRWJli3Ri38KL3ObIrGZJqDShx5HAjM/MuCaEsrygz8Hfo9lyVhkmZ igte+tL41Bl7obatzr+jT0ThA5rAvW83m416HxWb+piBcHdt3MSN6pJKX7sMdSWhv9IkqIoK9ms w4mQ20MTawpUtAoN5ShFqzwXHfb/Qvfo/RYMowybn7Yd3fFZCxSTz2xAYOEfEomOl0sH1QDPxDl 8xIc+AJc/+10C50ddXjOIv7jcUsI/Rl/UoLPYIha+9LJ0zl99VD0MEZFionnUqLLZ+zKFnMTDKV CunkAkdAa+5xgFXSr12fmWqHVp+3huwnLOOEljxC9z3CuCxKBXS4C00XxLFs5VI6JWSCooVtJyM yFw/FvUsokT2B84vtmNZto2gGY5afBAdkTNfKAm1LEGy6FORBKiTr3Ovbl/HPoZx/GECNdoAeXh v6GTQjBvR/6viVRSroKgL50NfCeJKLX5bxXAubJc7A65VQN+C/+HBYffLY+GL+578hX8MxACRyw 4hCy4RLMEUaaz7A== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling with guard(mutex), which allows to drop local 'ret' variable and to directly return instead of jumping. Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wcd937x.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/sound/soc/codecs/wcd937x.c b/sound/soc/codecs/wcd937x.c index c9d5e67bf66e4e8e21a76cfd563c75bac6555513..7d8f995d2daff50708e361fa446= b52898c0faa81 100644 --- a/sound/soc/codecs/wcd937x.c +++ b/sound/soc/codecs/wcd937x.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only // Copyright (c) 2023-2024 Qualcomm Innovation Center, Inc. All rights res= erved. =20 +#include #include #include #include @@ -1445,7 +1446,7 @@ static int wcd937x_mbhc_micb_adjust_voltage(struct sn= d_soc_component *component, int req_volt, int micb_num) { struct wcd937x_priv *wcd937x =3D snd_soc_component_get_drvdata(component); - int cur_vout_ctl, req_vout_ctl, micb_reg, micb_en, ret =3D 0; + int cur_vout_ctl, req_vout_ctl, micb_reg, micb_en; =20 switch (micb_num) { case MIC_BIAS_1: @@ -1460,7 +1461,9 @@ static int wcd937x_mbhc_micb_adjust_voltage(struct sn= d_soc_component *component, default: return -EINVAL; } - mutex_lock(&wcd937x->micb_lock); + + guard(mutex)(&wcd937x->micb_lock); + /* * If requested micbias voltage is same as current micbias * voltage, then just return. Otherwise, adjust voltage as @@ -1475,15 +1478,11 @@ static int wcd937x_mbhc_micb_adjust_voltage(struct = snd_soc_component *component, WCD937X_MICB_VOUT_MASK); =20 req_vout_ctl =3D wcd937x_get_micb_vout_ctl_val(req_volt); - if (req_vout_ctl < 0) { - ret =3D -EINVAL; - goto exit; - } + if (req_vout_ctl < 0) + return -EINVAL; =20 - if (cur_vout_ctl =3D=3D req_vout_ctl) { - ret =3D 0; - goto exit; - } + if (cur_vout_ctl =3D=3D req_vout_ctl) + return 0; =20 if (micb_en =3D=3D WCD937X_MICB_ENABLE) snd_soc_component_write_field(component, micb_reg, @@ -1504,9 +1503,8 @@ static int wcd937x_mbhc_micb_adjust_voltage(struct sn= d_soc_component *component, */ usleep_range(2000, 2100); } -exit: - mutex_unlock(&wcd937x->micb_lock); - return ret; + + return 0; } =20 static int wcd937x_mbhc_micb_ctrl_threshold_mic(struct snd_soc_component *= component, --=20 2.43.0