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: v4.19.178~67 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1861f63e3b484aa4a577685814eafdb8a0cb450d;p=thirdparty%2Fkernel%2Fstable.git 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: 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index 05c1054330b71..1a8c7403cfe6d 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -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;