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i2c: core: ACPI: Improve OpRegion read errors

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When we get an error doing an ACPI SerialBus I2C OpRegion read log some
useful details, like the client address and which register is being
read.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Hans de Goede 2018-04-22 19:57:59 +02:00 • committed by Wolfram Sang
parent 6da6c0db53
commit c8016fa215
1 changed files with 2 additions and 1 deletions
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3
drivers/i2c/i2c-core-acpi.c
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@ -446,7 +446,8 @@ static int acpi_gsb_i2c_read_bytes(struct i2c_client *client,
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret < 0)
dev_err(&client->adapter->dev, "i2c read failed\n");
dev_err(&client->adapter->dev, "i2c read %d bytes from client@%#x starting at reg %#x failed, error: %d\n",
data_len, client->addr, cmd, ret);
else
memcpy(data, buffer, data_len);