diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-09-11 15:34:23 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-08-26 12:14:56 +0300 |
| commit | 58f414fa435cf728a82f435bac4781da86afb623 (patch) | |
| tree | b0e671d67c49f40436e6ca68d6afc6159bf4942a /drivers/thunderbolt | |
| parent | d94dcbb10183f3b384c84e65724d2b753aa53c4d (diff) | |
| download | linux-58f414fa435cf728a82f435bac4781da86afb623.tar.bz2 | |
thunderbolt: Hide switch attributes that are not set
Thunderbolt host routers may not always contain DROM that includes
device identification information. This is mostly needed for Ice Lake
systems but some Falcon Ridge controllers on PCs also do not have DROM.
In that case hide the identification attributes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Tested-by: Mario Limonciello <mario.limonciello@dell.com>
Diffstat (limited to 'drivers/thunderbolt')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 64f845fe4690..bd3eaaf34ea1 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -1337,7 +1337,19 @@ static umode_t switch_attr_is_visible(struct kobject *kobj, struct device *dev = container_of(kobj, struct device, kobj); struct tb_switch *sw = tb_to_switch(dev); - if (attr == &dev_attr_key.attr) { + if (attr == &dev_attr_device.attr) { + if (!sw->device) + return 0; + } else if (attr == &dev_attr_device_name.attr) { + if (!sw->device_name) + return 0; + } else if (attr == &dev_attr_vendor.attr) { + if (!sw->vendor) + return 0; + } else if (attr == &dev_attr_vendor_name.attr) { + if (!sw->vendor_name) + return 0; + } else if (attr == &dev_attr_key.attr) { if (tb_route(sw) && sw->tb->security_level == TB_SECURITY_SECURE && sw->security_level == TB_SECURITY_SECURE) |