summaryrefslogtreecommitdiff
path: root/drivers/thunderbolt/switch.c
diff options
context:
space:
mode:
authorYehezkel Bernat <yehezkel.bernat@intel.com>2018-01-22 12:50:09 +0200
committerMika Westerberg <mika.westerberg@linux.intel.com>2018-03-09 12:54:11 +0300
commit14862ee308bbcaae0ac9927b6cbccccb51386b6c (patch)
tree5052d4e77b83a46557e61c5e2e6c7af66e72e804 /drivers/thunderbolt/switch.c
parent3080e197e936ab7cdcf66cacec22abe5c6c1007a (diff)
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.c14
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;