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| author | Veera Sundaram Sankaran <veeras@codeaurora.org> | 2016-07-18 18:35:06 -0700 |
|---|---|---|
| committer | Veera Sundaram Sankaran <veeras@codeaurora.org> | 2016-08-10 12:38:49 -0700 |
| commit | 1d2302bdf2003a3b3abc1b2a8bca210ff52fbbfe (patch) | |
| tree | 0c567b1f4391f52a28ac5bca6d9177e00df1d9f4 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | bd9b4036823e251be531d4686b409079097d1f75 (diff) | |
msm: mdss: fix race condition between iommu attach and sending DCS cmds
There might be cases during bootup when backlight cmds or ESD thread
sends DCS cmds to the panel when iommu attach is yet to happen. DSI
uses physical or virtual address based on the iommu_attached status
check. If iommu attach happens when the DCS cmds are using the
physical address, it would lead to SMMU page faults. Protect iommu
attach/detach and DCS cmd sending with an iommu_lock to avoid such
race conditions.
Change-Id: I16fb0bf884f0dbbce1cd9099ec5619d132379054
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions