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- From df74e188ffc38176d4caba969e104d2ab2e4e609 Mon Sep 17 00:00:00 2001
- From: Su Bao Cheng <baocheng.su@siemens.com>
- Date: Fri, 12 Oct 2018 15:12:37 +0200
- Subject: [PATCH 07/18] 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 <baocheng.su@siemens.com>
- Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
- ---
- drivers/tty/serial/8250/8250_exar.c | 7 +++++--
- 1 file changed, 5 insertions(+), 2 deletions(-)
- diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
- index be82707d6cb8..3eb3a7674a0f 100644
- --- a/drivers/tty/serial/8250/8250_exar.c
- +++ b/drivers/tty/serial/8250/8250_exar.c
- @@ -338,12 +338,15 @@ 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,
- },
- --
- 2.16.4
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