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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-12-30 11:14:46 +0100 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-04-18 10:18:51 +0200 |
| commit | f0342e757c271e7c6dd5adedfb6e6695c5af52bf (patch) | |
| tree | beaa2c019b14a6f35e3f925a11c6ca78ad139df4 /drivers/thunderbolt/tb.h | |
| parent | thunderbolt: Take domain lock in switch sysfs attribute callbacks (diff) | |
| download | linux-f0342e757c271e7c6dd5adedfb6e6695c5af52bf.tar.xz linux-f0342e757c271e7c6dd5adedfb6e6695c5af52bf.zip | |
thunderbolt: Do not allocate switch if depth is greater than 6
Maximum depth in Thunderbolt topology is 6 so make sure it is not
possible to allocate switches that exceed the depth limit.
While at it update tb_switch_alloc() to use upper/lower_32_bits()
following tb_switch_alloc_safe_mode().
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index f7b0c43c29a7..93c1ea21feeb 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -43,6 +43,7 @@ struct tb_switch_nvm { }; #define TB_SWITCH_KEY_SIZE 32 +#define TB_SWITCH_MAX_DEPTH 6 /** * struct tb_switch - a thunderbolt switch |