From: jeffrey.lin Date: Tue, 15 Dec 2020 18:50:12 +0000 (-0800) Subject: Input: raydium_ts_i2c - do not send zero length X-Git-Tag: v5.15~74^2~24^2~43 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fafd320ae51b9c72d371585b2501f86640ea7b7d;p=platform%2Fkernel%2Flinux-starfive.git Input: raydium_ts_i2c - do not send zero length Add default write command package to prevent i2c quirk error of zero data length as Raydium touch firmware update is executed. Signed-off-by: jeffrey.lin 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: Dmitry Torokhov --- diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index e694a9b..678afac8 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -395,6 +395,7 @@ 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) { @@ -403,7 +404,7 @@ 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;