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 <shc_work@xxxxxxx>
---
commands/i2c.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
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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