From 3e51ceea1006186a73367a78bb5cab76cf39d1bd Mon Sep 17 00:00:00 2001 From: Su Bao Cheng Date: Thu, 18 Apr 2019 11:15:04 +0200 Subject: serial: 8250_exar: Adjust IOT2000 matching Since there are more IOT2040 variants with identical hardware but different asset tags, the asset tag matching should be adjusted to support them. As only the IOT2040 variants have the Exar chip on board, matching on their board name is enough. In the future there will be no other devices with the "SIMATIC IOT2000" DMI board name but different hardware. Signed-off-by: Su Bao Cheng Reviewed-by: Jan Kiszka Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_exar.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 0089aa305ef9..edd6dfe055bf 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -361,12 +361,15 @@ static const struct exar8250_platform iot2040_platform = { .register_gpio = iot2040_register_gpio, }; +/* + * For SIMATIC IOT2000, only IOT2040 and its variants have the Exar device, + * IOT2020 doesn't have. Therefore it is sufficient to match on the common + * board name after the device was found. + */ static const struct dmi_system_id exar_platforms[] = { { .matches = { DMI_EXACT_MATCH(DMI_BOARD_NAME, "SIMATIC IOT2000"), - DMI_EXACT_MATCH(DMI_BOARD_ASSET_TAG, - "6ES7647-0AA00-1YA2"), }, .driver_data = (void *)&iot2040_platform, }, -- cgit v1.2.3