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mfd: qnap-mcu: Use EPROTO in stead of EIO on checksum errors

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EPROTO stands for protocol error and a lot of driver already use it
to designate errors in the sent or received data from a peripheral.

So use it in the qnap-mcu as well for checksum errors.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patch.msgid.link/20251113165218.449616-3-heiko@sntech.de
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Heiko Stuebner 2025-11-13 17:52:16 +01:00 committed by Lee Jones
parent b4881070a0
commit c94fce30e1
1 changed files with 1 additions and 1 deletions
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drivers/mfd/qnap-mcu.c
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@ -178,7 +178,7 @@ int qnap_mcu_exec(struct qnap_mcu *mcu,
crc = qnap_mcu_csum(rx, reply->received - QNAP_MCU_CHECKSUM_SIZE);
if (crc != rx[reply->received - QNAP_MCU_CHECKSUM_SIZE]) {
dev_err(&mcu->serdev->dev, "Invalid Checksum received\n");
return -EIO;
return -EPROTO;
}
memcpy(reply_data, rx, reply_data_size);