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Input: raydium_ts_i2c - do not send zero length

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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 <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: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
jeffrey.lin 2020-12-15 10:50:12 -08:00 • committed by Greg Kroah-Hartman
commit d84f9c28ab
1 changed files with 2 additions and 1 deletions
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3
drivers/input/touchscreen/raydium_i2c_ts.c
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@ -410,6 +410,7 @@ 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) {
@ -418,7 +419,7 @@ 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;