From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lj1-f176.google.com (mail-lj1-f176.google.com [209.85.208.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0168648987B for ; Sat, 3 Oct 2026 19:50:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.176 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791057033; cv=none; b=aKdsYYifRwsEQxRdxRIOsVV8uQVjxoyBusT0FEGCux23ogfvILNNLdP4IClTuRwkmtedUje1pxeFiZswwTTV+QWN8XroaHHQumKKqsY4eZ072fcaXTjEcatuRD/PWgn7cE3p5o+pHKF/qXzxy1kKzL7lJlxLvk87+IdIqvJXrsI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791057033; c=relaxed/simple; bh=wzKMDeKGTtEp9oc6X/r1ye9YtAdC96LVQHmGGkSU3MA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IWOGC+LS6iEnuFOMdFjRrHwcSbJOVquunhlOy0B9f9dOG/9gUSKVrVpTVd5zRegM+m+FA/ow0Chd7Vjzg85aYckxhiN+gGErnsiIJakMyXspkO32ZqmT8KhCCakUBs2IR+woRjjvUs6Z+55jAraGCirvTDTMrFzr+pTjItGIWRA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=dSeCzgAE; arc=none smtp.client-ip=209.85.208.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dSeCzgAE" Received: by mail-lj1-f176.google.com with SMTP id 38308e7fff4ca-3a20f06cce6so10390641fa.1 for ; Sat, 03 Oct 2026 12:50:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791057027; x=1791661827; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=IXn6S94b33P25ufvgJkMunPhNjIZY13JTvQoBrLLnq0=; b=dSeCzgAEMD22PxVtDuFANbvUu3Hm4W1/gvjpPDEWvvx73lQftznkGkqT2oAETmI+P3 ZiQ76vKtUDRcQm61syO2NX1U11M9M3yJ6Aa4EC07f8YEPh+wV14CNYkMibNKCd4flfu2 IMXftSU/bll8/3PQTeSIJ9Lf5DphRKLwpVoTHL2JUyGFhPeRkw4i/rJ+g7WtixVH57f7 3fLxCj/xGFu6E5UWMOUPWhECqnN5mFwKNDZzmZc1w/th8VVdaKtF0KdNvToDgyz9Rm0W CcyUkFKmp9ixvxDzMY7Gj4mDx09Y5s+ECUtjttu5O3qBweeQ6Uu1Nars8nlC8ikn7jlU y3PA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791057027; x=1791661827; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=IXn6S94b33P25ufvgJkMunPhNjIZY13JTvQoBrLLnq0=; b=YZudIa8+7PgjTxXz7ZssvSEBT6pysPmMQPAybDoghFkzeKA17cFxBRnENVSY1om9JK hdov2NyStYa1S1aFEP8TQgBhizyRsLtXPEO7ftePDlgdYZfn6qh8h22pZ1OBJkTOmOJn LpWiuo5DKlzn9aETp42ezlK7vDeiJjHKKam7AxOd4rER6vUvYydIEanQ1bycZ58HvmaE k9C8bK+BP6ccAlZ5FnN7nhdxKqfKEXCRVB5rG+PU1oZ//UjVtvWNwwe4dMV36diJJJx4 MmssPIh+5aw8U8PBkj3TF0QosIFryiXu2iZOMFzJFs4j5yZe33+kKUEEdnXZPr+bi0ol pcZQ== X-Forwarded-Encrypted: i=1; AKwUvBzi7UzUv8AXWLBmAzWYOLbSHrRLpqG6EQ62IrSJKkZ3+YcHbO97KfgpMgp9U8XE53wAQtupS4Ege+/cVgI=@vger.kernel.org X-Gm-Message-State: AFq9FYLlQRHtTmS8JxqUqTREj+2uXX/jr5e+yGt4kzyPnr/VHTSMrkzB LmrpgX9tVH+u+vcCm19vi0Fzu6mC1Vhf3+/p2LZ7CvJDrHw++A3bsd8b X-Gm-Gg: AYBFou03rByaTGvisU5F+j9mDQp2J9eqVAin2NeKSo7MO+VgW7k+VyabKPGZFgtyODt aZ+USURJ8G7WQLjmSLHX/XKA+UqXIMQLNE14DBx+yCBGhnU/Zti7mZcy19IBTlMNdwa45GadSUf ayv4g15v6YvZYw/Y1qYHgLiutVRrwpnfcBGuTS/iDHhqAykV2JGXcUB2ssiQfRA8tqDnpiB4fog YUXESuDnfVMsrqz5BaGp/2VZAVkPzYIr8NQ8Wkh7MQThJVbbYzWGEjv4Plc6i7VKxkhblJRCV4B vxUaTDKRzKAI5dYsKfYlNaswsS7dnnB+WK7EZ3qazBdLUypmY1R5khsfYazygqvLPfAbvEeRgT0 PZ4ycEQd+5ig/EQOK3aamzkUr9DK4mdolbpyz8n5AEGUPN2MeNfPH35OMpkG6g0Q6HXOpy9GvIS oubV3I/boHf4r1/qPBd4MkuJc8LgtnHmr3epIFiCfDYcjFbve5cJio8OrkXA9M/yng7RK/L/Ucp JgduAgRn+e2U7hPnC82LNqVgCZN94kCsR4g0SeiIIZXwnFrDY1gdcTAdeKKGdzgZPxv3ug= X-Received: by 2002:a05:651c:15cb:10b0:3a7:812b:ce2 with SMTP id 38308e7fff4ca-3a783457b10mr17076801fa.23.1791057026701; Sat, 03 Oct 2026 12:50:26 -0700 (PDT) Received: from yantra.. (dsl-trebng21-58c187-236.dhcp.inet.fi. [88.193.135.236]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5bb7c7abdbfsm1762608e87.65.2026.10.03.12.50.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Oct 2026 12:50:26 -0700 (PDT) From: Rupesh Majhi To: Andy Shevchenko , Bill Wendling , David Lechner , Eddie James , Jonathan Cameron , Justin Stitt , Nathan Chancellor , Nick Desaulniers , =?UTF-8?q?Nuno=20S=C3=A1?= Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Rupesh Majhi , Andy Shevchenko Subject: [PATCH v12 5/5] iio: pressure: dps310: assert the lock at runtime too Date: Sat, 3 Oct 2026 22:50:11 +0300 Message-ID: <20261003195012.92948-6-zoone.rupert@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261003195012.92948-1-zoone.rupert@gmail.com> References: <20261003195012.92948-1-zoone.rupert@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 __must_hold() is clang only and does nothing in GCC builds. Add lockdep_assert_held() next to each, so lockdep catches a missing lock too. Suggested-by: Andy Shevchenko Assisted-by: LLM Signed-off-by: Rupesh Majhi --- drivers/iio/pressure/dps310.c | 43 +++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c index d70a0fa69c25..adfab5e3ac40 100644 --- a/drivers/iio/pressure/dps310.c +++ b/drivers/iio/pressure/dps310.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -359,6 +360,8 @@ static int dps310_set_pres_precision(struct dps310_data *data, int val) int rc; u8 shift_en; + lockdep_assert_held(&data->lock); + if (val < 0 || val > 128) return -EINVAL; @@ -378,6 +381,8 @@ static int dps310_set_temp_precision(struct dps310_data *data, int val) int rc; u8 shift_en; + lockdep_assert_held(&data->lock); + if (val < 0 || val > 128) return -EINVAL; @@ -396,6 +401,8 @@ static int dps310_set_pres_samp_freq(struct dps310_data *data, int freq) { u8 val; + lockdep_assert_held(&data->lock); + if (freq < 0 || freq > 128) return -EINVAL; @@ -410,6 +417,8 @@ static int dps310_set_temp_samp_freq(struct dps310_data *data, int freq) { u8 val; + lockdep_assert_held(&data->lock); + if (freq < 0 || freq > 128) return -EINVAL; @@ -509,6 +518,8 @@ static int dps310_ready(struct dps310_data *data, int ready_bit, int timeout) { int rc; + lockdep_assert_held(&data->lock); + rc = dps310_ready_status(data, ready_bit, timeout); if (rc) { if (rc == -ETIMEDOUT && !data->timeout_recovery_failed) { @@ -539,6 +550,8 @@ static int dps310_read_pres_raw_locked(struct dps310_data *data) int timeout; u8 val[3]; + lockdep_assert_held(&data->lock); + rc = dps310_get_pres_samp_freq(data, &rate); if (rc) return rc; @@ -565,6 +578,8 @@ static int dps310_read_temp_ready(struct dps310_data *data) int rc; u8 val[3]; + lockdep_assert_held(&data->lock); + rc = regmap_bulk_read(data->regmap, DPS310_TMP_BASE, val, sizeof(val)); if (rc < 0) return rc; @@ -581,6 +596,8 @@ static int dps310_read_temp_raw_locked(struct dps310_data *data) int rate; int timeout; + lockdep_assert_held(&data->lock); + rc = dps310_get_temp_samp_freq(data, &rate); if (rc) return rc; @@ -602,6 +619,8 @@ static void dps310_refresh_temp_locked(struct dps310_data *data) int rc; int t_ready; + lockdep_assert_held(&data->lock); + rc = regmap_read(data->regmap, DPS310_MEAS_CFG, &t_ready); if (rc) return; @@ -707,6 +726,8 @@ static int dps310_calculate_pressure(struct dps310_data *data, int *val) s64 kp; s64 kt; + lockdep_assert_held(&data->lock); + rc = dps310_get_pres_k(data, &kpi); if (rc) return rc; @@ -832,6 +853,8 @@ static int dps310_calculate_temp(struct dps310_data *data, int *val) s64 t; int kt, rc; + lockdep_assert_held(&data->lock); + rc = dps310_get_temp_k(data, &kt); if (rc) return rc; @@ -940,6 +963,8 @@ static int dps310_fill_channels(struct dps310_data *data, unsigned int i; int rc; + lockdep_assert_held(&data->lock); + /* Compensation needs a temperature, so it is sampled either way */ rc = dps310_read_temp_raw_locked(data); if (rc) @@ -970,12 +995,16 @@ static int dps310_fill_channels(struct dps310_data *data, static int dps310_fifo_hw_flush(struct dps310_data *data) __must_hold(&data->lock) { + lockdep_assert_held(&data->lock); + return regmap_write(data->regmap, DPS310_RESET, DPS310_FIFO_FLUSH); } static int dps310_fifo_set_enable(struct dps310_data *data, bool enable) __must_hold(&data->lock) { + lockdep_assert_held(&data->lock); + return regmap_assign_bits(data->regmap, DPS310_CFG_REG, DPS310_FIFO_EN, enable); } @@ -1014,6 +1043,8 @@ static int dps310_fifo_read_entry(struct dps310_data *data, s32 *value) s32 raw; int rc; + lockdep_assert_held(&data->lock); + /* Entries come out of the pressure registers whichever made them */ rc = regmap_bulk_read(data->regmap, DPS310_PRS_BASE, val, sizeof(val)); if (rc < 0) @@ -1037,6 +1068,8 @@ static int dps310_fifo_push_scan(struct dps310_data *data, s32 temp_raw, unsigned int i; int rc; + lockdep_assert_held(&data->lock); + /* Direct-mode claim keeps sysfs reads off these */ data->temp_raw = temp_raw; data->pressure_raw = pressure_raw; @@ -1063,6 +1096,8 @@ static int dps310_fifo_push_scan(struct dps310_data *data, s32 temp_raw, static void dps310_fifo_hold(struct dps310_data *data, s32 pressure_raw) __must_hold(&data->lock) { + lockdep_assert_held(&data->lock); + if (data->fifo_held < data->fifo_hold_max) data->fifo_hold[data->fifo_held++] = pressure_raw; } @@ -1073,6 +1108,8 @@ static unsigned int dps310_fifo_push_held(struct dps310_data *data) { unsigned int pushed = 0; + lockdep_assert_held(&data->lock); + for (unsigned int i = 0; i < data->fifo_held; i++) { if (!dps310_fifo_push_scan(data, data->fifo_temp_raw, data->fifo_hold[i])) @@ -1105,6 +1142,8 @@ static int dps310_fifo_drain(struct dps310_data *data, unsigned int max_scans) bool is_pressure; int rc; + lockdep_assert_held(&data->lock); + for (cnt = 0; cnt < DPS310_FIFO_DEPTH; cnt++) { if (max_scans && scans >= max_scans) break; @@ -1175,6 +1214,8 @@ static int dps310_fifo_hold_alloc(struct dps310_data *data, int prs_rate, int tmp_rate) __must_hold(&data->lock) { + lockdep_assert_held(&data->lock); + data->fifo_temp_valid = false; data->fifo_held = 0; data->fifo_hold = NULL; @@ -1222,6 +1263,8 @@ static int dps310_fifo_start(struct dps310_data *data) { int rc, prs_rate, tmp_rate; + lockdep_assert_held(&data->lock); + rc = dps310_get_pres_samp_freq(data, &prs_rate); if (rc) return rc; -- 2.43.0