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Merge "interconnect: qcom: Ignore -EBUSY for AMC requests"

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qctecmdr 2020-03-14 15:40:39 -07:00 • committed by Gerrit - the friendly Code Review server
commit fbaf44464c
1 changed files with 13 additions and 1 deletions
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14
drivers/interconnect/qcom/bcm-voter.c
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@ -285,7 +285,19 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)
ret = rpmh_write_batch(voter->dev, RPMH_ACTIVE_ONLY_STATE,
cmds, commit_idx);
if (ret) {
/*
* Ignore -EBUSY for AMC requests, since this can only happen for AMC
* requests when the RSC is in solver mode. We can only be in solver
* mode at the time of request for secondary RSCs (e.g. Display RSC),
* since the primary Apps RSC is only in solver mode while
* entering/exiting power collapse when SW isn't running. The -EBUSY
* response is expected in solver and is a non-issue, since we just
* want the request to apply to the WAKE set in that case instead.
* Interconnect doesn't know when the RSC is in solver, so just always
* send AMC and ignore the harmless error response.
*/
if (ret && ret != -EBUSY) {
pr_err("Error sending AMC RPMH requests (%d)\n", ret);
goto out;
}