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 0B6EF1C32EB; Tue, 8 Oct 2024 13:10:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728393054; cv=none; b=d05joqwJgF/TkqHdmyPVZPOm+VGPNPi2/CmXK8zqW4CFE63H8wyh28ERL7MSEaCb+YUM4tVu5LPOVnuU2/JXYfn8Nuh6IDqeXPjV7cEfmathAEYFHV4mDiVeXa1Whhm5VFLnC3T2Om+uctOjSCVXkHb/s/ZgrOxOs+Vatnd/1zI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728393054; c=relaxed/simple; bh=Rpp/fHtUtw5Dqvylt96rPm6IMKq/Pr2ue69JmAyjIGE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iJKh/wZFXQXT0hU4s4aP+QdKwFowmMq0th4EyZ5hH67E0x6WlDITA6gCfOeYdMYpw/2DLZUZyeoIdAptgoWcZlQrdhsiAoJopLR9IS5uX+Oz8IDpCVSPpeGSMhlbAgGipC7rNck7mWDNs7pZxI3ddTC5RpMBG52Tvfg7/CNtjuA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Z73Ax1Kz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Z73Ax1Kz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B3F0C4CECD; Tue, 8 Oct 2024 13:10:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728393053; bh=Rpp/fHtUtw5Dqvylt96rPm6IMKq/Pr2ue69JmAyjIGE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z73Ax1KzlXgDeiFe/lJgfTQyxDZYMR2IoCpDCB2P1Bi145txSLpSj2Yx1Qn/Vk1JZ ujKtXf7qs3uJclJxx6iZU6Zg64mWMBzovMjrMaBXdjvqNjVL3wrH4yeco2mHZEw7x/ cjtslt2qbWV1gnpO9z6gPV47ENB02QidOFph/igM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marc Ferland , Michal Simek , Andi Shyti , Sasha Levin Subject: [PATCH 6.6 039/386] i2c: xiic: improve error message when transfer fails to start Date: Tue, 8 Oct 2024 14:04:44 +0200 Message-ID: <20241008115631.012812494@linuxfoundation.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241008115629.309157387@linuxfoundation.org> References: <20241008115629.309157387@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marc Ferland [ Upstream commit ee1691d0ae103ba7fd9439800ef454674fadad27 ] xiic_start_xfer can fail for different reasons: - EBUSY: bus is busy or i2c messages still in tx_msg or rx_msg - ETIMEDOUT: timed-out trying to clear the RX fifo - EINVAL: wrong clock settings Both EINVAL and ETIMEDOUT will currently print a specific error message followed by a generic one, for example: Failed to clear rx fifo Error xiic_start_xfer however EBUSY will simply output the generic message: Error xiic_start_xfer which is not really helpful. This commit adds a new error message when a busy condition is detected and also removes the generic message since it does not provide any relevant information to the user. Signed-off-by: Marc Ferland Acked-by: Michal Simek Signed-off-by: Andi Shyti Stable-dep-of: 1d4a1adbed25 ("i2c: xiic: Try re-initialization on bus busy timeout") Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-xiic.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index 71391b590adae..19468565120e1 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -1105,8 +1105,11 @@ static int xiic_start_xfer(struct xiic_i2c *i2c, struct i2c_msg *msgs, int num) mutex_lock(&i2c->lock); ret = xiic_busy(i2c); - if (ret) + if (ret) { + dev_err(i2c->adap.dev.parent, + "cannot start a transfer while busy\n"); goto out; + } i2c->tx_msg = msgs; i2c->rx_msg = NULL; @@ -1164,10 +1167,8 @@ static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) return err; err = xiic_start_xfer(i2c, msgs, num); - if (err < 0) { - dev_err(adap->dev.parent, "Error xiic_start_xfer\n"); + if (err < 0) goto out; - } err = wait_for_completion_timeout(&i2c->completion, XIIC_XFER_TIMEOUT); mutex_lock(&i2c->lock); -- 2.43.0