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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/bpf/bpftool/common.c | |
| parent | a750bff5b99e4097de2fa0cf00b78abb98a3c0d2 (diff) | |
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/bpf/bpftool/common.c')
0 files changed, 0 insertions, 0 deletions