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| author | Xu Rao <raoxu@uniontech.com> | 2026-06-24 14:27:03 +0800 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2026-07-27 11:58:54 +0200 |
| commit | d2ee4d47aacbd2ba456092eeec670dba35fde291 (patch) | |
| tree | 2dbeaec36f5eed0d2616bab389cf755eff2587c9 | |
| parent | 97b228e596740fca5eeeb1d8e619c1f457d7e2f0 (diff) | |
| download | linux-next-d2ee4d47aacbd2ba456092eeec670dba35fde291.tar.gz linux-next-d2ee4d47aacbd2ba456092eeec670dba35fde291.zip | |
thunderbolt: Fix bandwidth group reservation indexing
Valid bandwidth group IDs range from 1 through MAX_GROUPS, while Group
ID 0 is reserved. tb_consumed_dp_bandwidth() uses the Group ID directly
to index its local group_reserved[] array.
The array currently has MAX_GROUPS entries, so its valid indices are 0
through MAX_GROUPS - 1. Group ID MAX_GROUPS therefore accesses one
element past the end, and the final group's reserved bandwidth is not
included when the array is summed.
Give group_reserved[] MAX_GROUPS + 1 entries so direct Group ID
indexing covers the reserved ID 0 and valid IDs 1 through MAX_GROUPS.
Fixes: 52a4490e89d7 ("thunderbolt: Reserve released DisplayPort bandwidth for a group for 10 seconds")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
| -rw-r--r-- | drivers/thunderbolt/tb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c index 76323255439a..f43f2d952372 100644 --- a/drivers/thunderbolt/tb.c +++ b/drivers/thunderbolt/tb.c @@ -609,7 +609,7 @@ static int tb_consumed_dp_bandwidth(struct tb *tb, int *consumed_up, int *consumed_down) { - int group_reserved[MAX_GROUPS] = {}; + int group_reserved[MAX_GROUPS + 1] = {}; struct tb_cm *tcm = tb_priv(tb); struct tb_tunnel *tunnel; bool downstream; |