diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2014-06-15 08:41:48 +0800 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-07-18 15:51:19 +0200 |
| commit | 208614e5439f886ecab37b35de7841221a51e5e1 (patch) | |
| tree | ac581162abf37d0663096ab37c7a63656a62f345 /lib/cpu-notifier-error-inject.c | |
| parent | 6fb7e70df60963690310c1a137562ef7041e7d5c (diff) | |
ACPI / EC: Remove duplicated ec_wait_ibf0() waiter
commit 9b80f0f73ae1583c22325ede341c74195847618c upstream.
After we've added the first command byte write into advance_transaction(),
the IBF=0 waiter is duplicated with the command completion waiter
implemented in the ec_poll() because:
If IBF=1 blocked the first command byte write invoked in the task
context ec_poll(), it would be kicked off upon IBF=0 interrupt or timed
out and retried again in the task context.
Remove this seperate and duplicate IBF=0 waiter. By doing so we can
reduce the overall number of times to access the EC_SC(R) status
register.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=70891
Link: https://bugzilla.kernel.org/show_bug.cgi?id=63931
Link: https://bugzilla.kernel.org/show_bug.cgi?id=59911
Reported-and-tested-by: Gareth Williams <gareth@garethwilliams.me.uk>
Reported-and-tested-by: Hans de Goede <jwrdegoede@fedoraproject.org>
Reported-by: Barton Xu <tank.xuhan@gmail.com>
Tested-by: Steffen Weber <steffen.weber@gmail.com>
Tested-by: Arthur Chen <axchen@nvidia.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'lib/cpu-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions