From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 DB07A399340 for ; Fri, 26 Jun 2026 02:59:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782442756; cv=none; b=n2pbTLfdPOCZSVfmC0KfiUg7ab1PEj96Txug+Jy5lZGpoDkpoVyawmw3nIxw79NQPLExgEqAj8+fUNaPzKhzgc0dX4VNPyg5omwiB+lCIA9BpYna/7qBta20hj5nXcA6KFih6quad35ILJ7A7bfwYthn4rcM9aXixwrpj378cPg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782442756; c=relaxed/simple; bh=54Z8Cw8L0KFu3D/Cv1efbP6u76H/GbdlhPOW5yAC0bE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tLAbEWFeK8H6X/q2gByOG158iMIIutYXiO2zQEP55n9yofB3HCfDzbripimO4pq6KNm2jRq4l47pveXXmr7/14MkQ2KW4WLS5S1B7U0QALUhFf8x/8GkElnqErWCqy19BaSN1yT/h9wO/25dFX4EEpbDRpzPzgAX9KhbWond42Y= 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=jqK1RYPY; arc=none smtp.client-ip=209.85.214.177 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="jqK1RYPY" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-2c6b67d5fa1so3099225ad.2 for ; Thu, 25 Jun 2026 19:59:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1782442753; x=1783047553; 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; bh=IvC4gX1oHDIM5j6whwgmhqEecsHukjk3hp3brUU36ME=; b=jqK1RYPYmyh0xTG851ApT5aJo4r0yDPYrl2XyL1Ygd0vzhJMzJExTbCwmtwpnDQ+vV AK7HVHyOzDAC0hrqUhR84opc0o74/p8Qk8lU0kx26aLdJTg/aUSeylHtnRpSqXuEZDTI lHVHSz+nV76ZayUWPqD4kEiEXE1uZEwAniTocgRZtny8pMjg2BFBZYlJErUacZ7JXDC5 dBvyS6O7aemMD069iOX3RYlmpUy+tCJXUnsNynfdK4Rr/KfeySboOSb/qyoWKrkCn4hf 16OuKW6HREso9FnLEYQj2/rDG9+JWC+DFEqQrwILg0kn2OM7G43TLvCbhZ55JX4/iQNy /mMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782442753; x=1783047553; 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; bh=IvC4gX1oHDIM5j6whwgmhqEecsHukjk3hp3brUU36ME=; b=YzZUi4aEU5ETsmr+zlzRM/aYhyTiaHNL0UfAGx7EhqWnhjJv0ix8bWnh8j8KPpntDM QKaNiTJojxJqN3O0awop1x1t8zlgGRKkbiRDRva/7qekbRXHBxcW3ad5qoLTsSlGMgV3 2DR6LGwVxc5PZoF7RowHcvcFpI0I7QN/r4RGw2/DbfCl7AU60GUpGSbB1vAHFOGcWj7X HDBzBzTL9RDNEsYLaNmLfUMQMhGEVNGBPNCDZKPwuZrId6zcdA+u0jXu0WtWwoW4nz1M rMGsuSxbzz9wSOKS1GYbz+sG/Ozd4c/yiv+W2ODBoximdQK1lroajS7G6bkELZZh6hgQ QQXw== X-Forwarded-Encrypted: i=1; AHgh+RqD85IkUoHOSI0inI7t/9wRUe+dZxEpFACX0fgUTMB5VtzhB4MiMB4M1A4Y+OSNiU1Ai4jHQPUYXVX3Q/w=@vger.kernel.org X-Gm-Message-State: AOJu0Yz9kgmq4mPMztgi1OOLUx3MlREn6iTapfXylKcFRxgJKTJlbmrB MH7mMNLyEOQUJIxNIYfg+oyaY6MM7m1bkPWVeZCgSDdZ67vcMWb5t9O/ X-Gm-Gg: AfdE7ck99gyLjVaPbJZNUwr/9fTMi/sVm0i2UVrZ/9Z35qKK3dvIVl5vpbcVQLebGfW Lbybafik1AkYwCekxLLHcstS6oTUA7NzV2R65YjfbXMOjhhkBRHB+Gy14JVhg3fO9JOOq8YOjUM /36pffJzCNWbbSmYYLS2P6ZUQTRIQ7lsYTGwnpeDVgcZgjZ/j6xHM27ufSs0ErgQ/DKhgjA4tqO z05odAGUC6MYzoS7xFRS3VPgavKe2DvUthWD8lRQyrc74mTNULuf9vt8RYoymab2FeNTT+B9rv1 S6agr3u1PlnQ/JKamcKd5l6b8typiqNlwN6T5vekseQ6QVAqtBzblQbNLCnlXQWzxsCBijdov7i L2Nk3O7fRTx5SUESPRbtaVrixTfi9LB5nsGSmrtZhc0QSNw5ySRV3J5ldLKqIxNcfjhAcF+Loet 3QZylYXMasPQU= X-Received: by 2002:a17:903:1acb:b0:2c8:1f58:55dd with SMTP id d9443c01a7336-2c81f58569bmr423295ad.9.1782442753216; Thu, 25 Jun 2026 19:59:13 -0700 (PDT) Received: from archermind.. ([182.150.55.91]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c7f5afb1e0sm31252535ad.29.2026.06.25.19.59.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Jun 2026 19:59:12 -0700 (PDT) From: Liem To: frank.li@oss.nxp.com Cc: Frank.Li@nxp.com, andi.shyti@kernel.org, biwen.li@nxp.com, festevam@gmail.com, imx@lists.linux.dev, kernel@pengutronix.de, liem16213@gmail.com, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, o.rempel@pengutronix.de, s.hauer@pengutronix.de, stable@vger.kernel.org, wsa@kernel.org Subject: [PATCH v3 1/2] i2c: imx: Clear slave pointer on registration error Date: Fri, 26 Jun 2026 10:58:45 +0800 Message-Id: <20260626025846.106157-2-liem16213@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260626025846.106157-1-liem16213@gmail.com> References: <20260626025846.106157-1-liem16213@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 In i2c_imx_reg_slave(), i2c_imx->slave is checked at the beginning and the function returns -EBUSY if it is non-NULL. If pm_runtime_resume_and_get() fails later, the error path returns without clearing i2c_imx->slave, leaving it non-NULL. Subsequent attempts to register a slave will then immediately fail with -EBUSY, making it impossible to register the slave again. Fix by setting i2c_imx->slave = NULL on the error path. Fixes: f7414cd6923f ("i2c: imx: support slave mode for imx I2C driver") Cc: stable@vger.kernel.org Signed-off-by: Liem --- drivers/i2c/busses/i2c-imx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 28313d0fad37..17defb470776 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -936,6 +936,7 @@ static int i2c_imx_reg_slave(struct i2c_client *client) /* Resume */ ret = pm_runtime_resume_and_get(i2c_imx->adapter.dev.parent); if (ret < 0) { + i2c_imx->slave = NULL; dev_err(&i2c_imx->adapter.dev, "failed to resume i2c controller"); return ret; } -- 2.34.1