diff options
| author | Yehezkel Bernat <yehezkel.bernat@intel.com> | 2018-01-22 13:50:09 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-03-09 12:54:11 +0300 |
| commit | 14862ee308bbcaae0ac9927b6cbccccb51386b6c (patch) | |
| tree | 5052d4e77b83a46557e61c5e2e6c7af66e72e804 /drivers/thunderbolt/switch.c | |
| parent | 3080e197e936ab7cdcf66cacec22abe5c6c1007a (diff) | |
| download | linux-14862ee308bbcaae0ac9927b6cbccccb51386b6c.tar.xz | |
thunderbolt: Add 'boot' attribute for devices
In various cases, Thunderbolt device can be connected by ICM on boot
without waiting for approval from user. Most cases are related to
OEM-specific BIOS configurations. This information is interesting for
user-space as if the device isn't in SW ACL, it may create a friction in
the user experience where the device is automatically authorized if it's
connected on boot but requires an explicit user action if connected
after OS is up. User-space can use this information to suggest adding
the device to SW ACL for auto-authorization on later connections.
Signed-off-by: Yehezkel Bernat <yehezkel.bernat@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 4e2b2097bbfc..e9e30aaab2a3 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -775,6 +775,15 @@ static ssize_t authorized_store(struct device *dev, } static DEVICE_ATTR_RW(authorized); +static ssize_t boot_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct tb_switch *sw = tb_to_switch(dev); + + return sprintf(buf, "%u\n", sw->boot); +} +static DEVICE_ATTR_RO(boot); + static ssize_t device_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -951,6 +960,7 @@ static DEVICE_ATTR_RO(unique_id); static struct attribute *switch_attrs[] = { &dev_attr_authorized.attr, + &dev_attr_boot.attr, &dev_attr_device.attr, &dev_attr_device_name.attr, &dev_attr_key.attr, @@ -979,6 +989,10 @@ static umode_t switch_attr_is_visible(struct kobject *kobj, if (sw->dma_port) return attr->mode; return 0; + } else if (attr == &dev_attr_boot.attr) { + if (tb_route(sw)) + return attr->mode; + return 0; } return sw->safe_mode ? 0 : attr->mode; |