From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 4.19 118/209] i2c: tegra: use core to detect 'no zero length' quirk Date: Tue, 12 Nov 2019 20:48:54 -0500 Message-ID: <20191113015025.9685-118-sashal@kernel.org> References: <20191113015025.9685-1-sashal@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20191113015025.9685-1-sashal@kernel.org> Sender: stable-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wolfram Sang , Jon Hunter , Wolfram Sang , Sasha Levin , linux-i2c@vger.kernel.org, linux-tegra@vger.kernel.org List-Id: linux-i2c@vger.kernel.org From: Wolfram Sang [ Upstream commit c96c0f2683804b710531e7b754dcd02b5ded6d4a ] And don't reimplement in the driver. Signed-off-by: Wolfram Sang Acked-by: Jon Hunter Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- drivers/i2c/busses/i2c-tegra.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index ef13b6ce9d8de..47d196c026ba6 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -684,9 +684,6 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, tegra_i2c_flush_fifos(i2c_dev); - if (msg->len == 0) - return -EINVAL; - i2c_dev->msg_buf = msg->buf; i2c_dev->msg_buf_remaining = msg->len; i2c_dev->msg_err = I2C_ERR_NONE; @@ -831,6 +828,7 @@ static const struct i2c_algorithm tegra_i2c_algo = { /* payload size is only 12 bit */ static const struct i2c_adapter_quirks tegra_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, .max_read_len = 4096, .max_write_len = 4096 - 12, }; -- 2.20.1