From: Wolfram Sang wsa+renesas@sang-engineering.com
[ Upstream commit e2115ace4196bcd2126446fb874bcfc90cba79be ]
And don't reimplement in the driver.
Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com Acked-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Wolfram Sang wsa@the-dreams.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-zx2967.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-zx2967.c b/drivers/i2c/busses/i2c-zx2967.c index 48281c1b30c6d..b8f9e020d80e6 100644 --- a/drivers/i2c/busses/i2c-zx2967.c +++ b/drivers/i2c/busses/i2c-zx2967.c @@ -281,9 +281,6 @@ static int zx2967_i2c_xfer_msg(struct zx2967_i2c *i2c, int ret; int i;
- if (msg->len == 0) - return -EINVAL; - zx2967_i2c_flush_fifos(i2c);
i2c->cur_trans = msg->buf; @@ -498,6 +495,10 @@ static const struct i2c_algorithm zx2967_i2c_algo = { .functionality = zx2967_i2c_func, };
+static const struct i2c_adapter_quirks zx2967_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + static const struct of_device_id zx2967_i2c_of_match[] = { { .compatible = "zte,zx296718-i2c", }, { }, @@ -568,6 +569,7 @@ static int zx2967_i2c_probe(struct platform_device *pdev) strlcpy(i2c->adap.name, "zx2967 i2c adapter", sizeof(i2c->adap.name)); i2c->adap.algo = &zx2967_i2c_algo; + i2c->adap.quirks = &zx2967_i2c_quirks; i2c->adap.nr = pdev->id; i2c->adap.dev.parent = &pdev->dev; i2c->adap.dev.of_node = pdev->dev.of_node;