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| author | Yilun Lin <yllin@google.com> | 2019-06-21 11:05:22 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-07-02 04:51:44 +0000 |
| commit | 1fc8bb63ec847d7e36633624e50658578b5e93f4 (patch) | |
| tree | 2760c02f8fae39c8f9fe6e1aecb28ba3c98070cd /docs/sitemap.md | |
| parent | 0e662b07aae39979e65637e80f5baecbf0a92a0f (diff) | |
| download | chrome-ec-1fc8bb63ec847d7e36633624e50658578b5e93f4.tar.gz | |
mt_scp/ipi: Add ref-counted API ipi_{en,dis}able_irq()
Unify IPC IRQ accessing to prevent a wrong IRQ enabling status.
An IPC IRQ could be shared across many IPI handlers.
Those handlers would usually operate on disabling or enabling the IPC IRQ.
This may disorder the actual timing to on/off the IRQ when there are many
tasks try to operate on it. As a result, any access to the SCP_IRQ_*
should go through ipi_{en,dis}able_irq(), which support a counter to
enable/disable the IRQ at correct timeing.
TEST=Boot scp.
BUG=b:117917141
BRANCH=master
Change-Id: I792849279dfeb5231f27fa7a9cf260e2059bbf4b
Signed-off-by: Yilun Lin <yllin@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1670650
Tested-by: Yilun Lin <yllin@chromium.org>
Auto-Submit: Yilun Lin <yllin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
Diffstat (limited to 'docs/sitemap.md')
0 files changed, 0 insertions, 0 deletions