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Lv Zheng authored
After enabling the EC event handling, Linux is still in the noirq stage, if there is no triggering source (EC transaction, GPE STS status), advance_transaction() will not be invoked and SCI_EVT cannot be detected. This patch adds one more triggering source after enabling the EC event handling to poll the pending SCI_EVT. Known issues: 1. Still no SCI_EVT triggering source There could still be no SCI_EVT triggering source after handling the first SCI_EVT (polled by this patch if any). Because after handling the first SCI_EVT, Linux could still be in noirq stage and there could still be no further triggering source in this stage. Then the second SCI_EVT indicated during this stage still cannot be detected by the EC driver. With this improvement applied, it is then possible to move acpi_ec_enable_event() out of the noirq stage to fix this issue (if the first SCI_EVT is handled out of the noirq stage, the follow-up SCI_EVTs should be able to trigger IRQs). Signed-off-by:
Lv Zheng <lv.zheng@intel.com> Tested-by:
Todd E Brandt <todd.e.brandt@linux.intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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