[08/12] i2c: tegra: use core to detect 'no zero length' quirk
diff mbox series

Message ID 20180723202617.15230-9-wsa+renesas@sang-engineering.com
State New
Headers show
Series
  • i2c: quirks: add zero length checks and update drivers
Related show

Commit Message

Wolfram Sang July 23, 2018, 8:26 p.m. UTC
And don't reimplement in the driver.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Only build tested.

 drivers/i2c/busses/i2c-tegra.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Comments

Wolfram Sang Oct. 5, 2018, 12:24 p.m. UTC | #1
On Mon, Jul 23, 2018 at 10:26:12PM +0200, Wolfram Sang wrote:
> And don't reimplement in the driver.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Ping.
Jon Hunter Oct. 5, 2018, 1:52 p.m. UTC | #2
On 23/07/18 21:26, Wolfram Sang wrote:
> And don't reimplement in the driver.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> ---
> 
> Only build tested.
> 
>  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 60c8561fbe65..437294ea2f0a 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,
>  };

Sorry for missing this, but looks fine to me, so ...

Acked-by: Jon Hunter <jonathanh@nvidia.com>

Cheers
Jon
Wolfram Sang Oct. 5, 2018, 4:08 p.m. UTC | #3
On Mon, Jul 23, 2018 at 10:26:12PM +0200, Wolfram Sang wrote:
> And don't reimplement in the driver.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Applied to for-next, thanks!

Patch
diff mbox series

diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 60c8561fbe65..437294ea2f0a 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,
 };