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Subject[PATCH] crypto: atmel-i2c - Fix wakeup fail
Date
The wake token cannot be sent without ignoring the nack for the
device address

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
---
drivers/crypto/atmel-i2c.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/atmel-i2c.c b/drivers/crypto/atmel-i2c.c
index 1d3355913b40..13624cde67e8 100644
--- a/drivers/crypto/atmel-i2c.c
+++ b/drivers/crypto/atmel-i2c.c
@@ -3,6 +3,7 @@
* Microchip / Atmel ECC (I2C) driver.
*
* Copyright (c) 2017, Microchip Technology Inc.
+ * Copyright (c) 2020 Jianhui Zhao <zhaojh329@gmail.com>
* Author: Tudor Ambarus <tudor.ambarus@microchip.com>
*/

@@ -176,7 +177,8 @@ static int atmel_i2c_wakeup(struct i2c_client *client)
* device is idle, asleep or during waking up. Don't check for error
* when waking up the device.
*/
- i2c_master_send(client, i2c_priv->wake_token, i2c_priv->wake_token_sz);
+ i2c_transfer_buffer_flags(client, i2c_priv->wake_token,
+ i2c_priv->wake_token_sz, I2C_M_IGNORE_NAK);

/*
* Wait to wake the device. Typical execution times for ecdh and genkey
--
2.17.1
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