Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1861f63e authored by jeffrey.lin's avatar jeffrey.lin Committed by Greg Kroah-Hartman
Browse files

Input: raydium_ts_i2c - do not send zero length 



commit fafd320ae51b9c72d371585b2501f86640ea7b7d upstream.

Add default write command package to prevent i2c quirk error of zero
data length as Raydium touch firmware update is executed.

Signed-off-by: default avatarjeffrey.lin <jeffrey.lin@rad-ic.com>
Link: https://lore.kernel.org/r/1608031217-7247-1-git-send-email-jeffrey.lin@raydium.corp-partner.google.com


Cc: stable@vger.kernel.org
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 912e3e9a

drivers/input/touchscreen/raydium_i2c_ts.c

+2 −1
Original line number Diff line number Diff line
@@ -419,6 +419,7 @@ static int raydium_i2c_write_object(struct i2c_client *client, 
				    enum raydium_bl_ack state)

{

	int error;

	static const u8 cmd[] = { 0xFF, 0x39 };



	error = raydium_i2c_send(client, RM_CMD_BOOT_WRT, data, len);

	if (error) {
@@ -427,7 +428,7 @@ static int raydium_i2c_write_object(struct i2c_client *client, 
		return error;

	}



	error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, NULL, 0);

	error = raydium_i2c_send(client, RM_CMD_BOOT_ACK, cmd, sizeof(cmd));

	if (error) {

		dev_err(&client->dev, "Ack obj command failed: %d\n", error);

		return error;