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authorSu Bao Cheng <baocheng.su@siemens.com>2019-04-18 11:15:04 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-04-25 11:37:41 +0200
commit3e51ceea1006186a73367a78bb5cab76cf39d1bd (patch)
tree62fcd3ecdfae30f78a328cf44b943847ae017078 /drivers/tty
parent4cdd17ba1dff20ffc99fdbd2e6f0201fc7fe67df (diff)
downloadlinux-3e51ceea1006186a73367a78bb5cab76cf39d1bd.tar.bz2
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_exar.c7
1 files changed, 5 insertions, 2 deletions
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,
},