diff options
| author | Andreas Noever <andreas.noever@gmail.com> | 2014-06-03 22:04:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-19 14:13:00 -0700 |
| commit | c90553b3c4ac2389a71a5c012b6e5bb1160d48a7 (patch) | |
| tree | a4374e06d030654c1dd1f076417908f2536824f4 /drivers/thunderbolt/switch.c | |
| parent | 1df5172c5c251ec24a1bd0f44fe38c841f384330 (diff) | |
| download | lwn-c90553b3c4ac2389a71a5c012b6e5bb1160d48a7.tar.gz lwn-c90553b3c4ac2389a71a5c012b6e5bb1160d48a7.zip | |
thunderbolt: Read switch uid from EEPROM
Add eeprom access code and read the uid during switch initialization.
The UID will be used to check device identity after suspend.
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 667413f3ad7a..aeb5c30f8d76 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -376,6 +376,11 @@ struct tb_switch *tb_switch_alloc(struct tb *tb, u64 route) } sw->cap_plug_events = cap; + if (tb_eeprom_read_uid(sw, &sw->uid)) + tb_sw_warn(sw, "could not read uid from eeprom\n"); + else + tb_sw_info(sw, "uid: %#llx\n", sw->uid); + if (tb_plug_events_active(sw, true)) goto err; |