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| author |   Chris Packham <chris.packham@alliedtelesis.co.nz> | 2021-07-16 08:58:32 +1200 |
|---|---|---|
| committer |   Wolfram Sang <wsa@kernel.org> | 2021-07-20 22:32:01 +0200 |
| commit | 4a8ac5e45cdaa88884b4ce05303e304cbabeb367 (patch) | |
| tree | fcf7b8b0a3f46df664ab701e1effca2347b24d18 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | Merge tag 'at24-fixes-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current (diff) | |
| download | linux-dev-4a8ac5e45cdaa88884b4ce05303e304cbabeb367.tar.xz linux-dev-4a8ac5e45cdaa88884b4ce05303e304cbabeb367.zip | |
i2c: mpc: Poll for MCF
During some transfers the bus can still be busy when an interrupt is
received. Commit 763778cd7926 ("i2c: mpc: Restore reread of I2C status
register") attempted to address this by re-reading MPC_I2C_SR once but
that just made it less likely to happen without actually preventing it.
Instead of a single re-read, poll with a timeout so that the bus is given
enough time to settle but a genuine stuck SCL is still noticed.
Fixes: 1538d82f4647 ("i2c: mpc: Interrupt driven transfer")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions