diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2017-10-05 20:04:04 +0200 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-10-08 21:07:12 +0300 |
| commit | 3b95206110a2c13076c3a7fa8ddeae36c2dbcf42 (patch) | |
| tree | 2cdf0793fc20ccceff5d78254d3c872fcf878e30 /drivers/platform | |
| parent | dfea7e18276c6a702860c927298e15d4a4c2569d (diff) | |
platform/x86: peaq-wmi: Add DMI check before binding to the WMI interface
It seems that the WMI GUID used by the PEAQ 2-in-1 WMI hotkeys is not
as unique as a GUID should be and is used on some other devices too.
This is causing spurious key-press reports on these other devices.
This commits adds a DMI check to the PEAQ 2-in-1 WMI hotkeys driver to
ensure that it is actually running on a PEAQ 2-in-1, fixing the
spurious key-presses on these other devices.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1497861
BugLink: https://bugzilla.suse.com/attachment.cgi?id=743182
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/peaq-wmi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/platform/x86/peaq-wmi.c b/drivers/platform/x86/peaq-wmi.c index bc98ef95514a..67fa3fa32011 100644 --- a/drivers/platform/x86/peaq-wmi.c +++ b/drivers/platform/x86/peaq-wmi.c @@ -8,6 +8,7 @@ */ #include <linux/acpi.h> +#include <linux/dmi.h> #include <linux/input-polldev.h> #include <linux/kernel.h> #include <linux/module.h> @@ -64,8 +65,22 @@ static void peaq_wmi_poll(struct input_polled_dev *dev) } } +/* Some other devices (Shuttle XS35) use the same WMI GUID for other purposes */ +static const struct dmi_system_id peaq_dmi_table[] = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"), + DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"), + }, + }, +}; + static int __init peaq_wmi_init(void) { + /* WMI GUID is not unique, also check for a DMI match */ + if (!dmi_check_system(peaq_dmi_table)) + return -ENODEV; + if (!wmi_has_guid(PEAQ_DOLBY_BUTTON_GUID)) return -ENODEV; @@ -86,6 +101,9 @@ static int __init peaq_wmi_init(void) static void __exit peaq_wmi_exit(void) { + if (!dmi_check_system(peaq_dmi_table)) + return; + if (!wmi_has_guid(PEAQ_DOLBY_BUTTON_GUID)) return; |