On Wed, Nov 04, 2020 at 06:59:28AM +0300, Alexander Shiyan wrote:
> Some I2C adapters do not allow zero length data transfers, such as the AM335X.
> To use the i2c_probe command, let's use byte reading for this purpose.
>
> Signed-off-by: Alexander Shiyan <[email protected]>
> ---
> commands/i2c.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/commands/i2c.c b/commands/i2c.c
> index 53f36dfaa..997d49a94 100644
> --- a/commands/i2c.c
> +++ b/commands/i2c.c
> @@ -16,10 +16,12 @@ static void i2c_probe_range(struct i2c_adapter *adapter,
> int startaddr, int stop
>
> printf("probing i2c%d range 0x%02x-0x%02x: ", adapter->nr, startaddr,
> stopaddr);
> for (addr = startaddr; addr <= stopaddr && !ctrlc(); addr++) {
> + u8 buf[1];
> struct i2c_msg msg = {
> .addr = addr,
> - .buf = NULL,
> - .len = 0,
> + .buf = buf,
> + .len = sizeof(buf),
> + .flags = I2C_M_RD,
> };
> int ret = i2c_transfer(adapter, &msg, 1);
> if (ret == 1)
> --
> 2.26.2
>
>
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