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| author | Martin Fuzzey <martin.fuzzey@flowbird.group> | 2020-09-30 10:36:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-10 10:22:16 +0100 |
| commit | e69731a854e269e844fdd64d628991d20d905c4a (patch) | |
| tree | 11879b0badf0a8b9119497e0340b3a200a23a7e6 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | aec3d9d432d9aac82e3dab4cdd5cc7314601f2a8 (diff) | |
w1: mxc_w1: Fix timeout resolution problem leading to bus error
commit c9723750a699c3bd465493ac2be8992b72ccb105 upstream.
On my platform (i.MX53) bus access sometimes fails with
w1_search: max_slave_count 64 reached, will continue next search.
The reason is the use of jiffies to implement a 200us timeout in
mxc_w1_ds2_touch_bit().
On some platforms the jiffies timer resolution is insufficient for this.
Fix by replacing jiffies by ktime_get().
For consistency apply the same change to the other use of jiffies in
mxc_w1_ds2_reset_bus().
Fixes: f80b2581a706 ("w1: mxc_w1: Optimize mxc_w1_ds2_touch_bit()")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Link: https://lore.kernel.org/r/1601455030-6607-1-git-send-email-martin.fuzzey@flowbird.group
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions