On Mon 23 Nov 04:28 CST 2020, Amit Pundir wrote: > Workaround to get WiFi working on Xiaomi Poco F1 (sdm845) > phone. We get a non-fatal QMI_ERR_MALFORMED_MSG_V01 error > message in ath10k_qmi_host_cap_send_sync(), but we can still > bring up WiFi services successfully on AOSP if we ignore it. > > We suspect either the host cap is not implemented or there > may be firmware specific issues. Firmware version is > QC_IMAGE_VERSION_STRING=WLAN.HL.2.0.c3-00257-QCAHLSWMTPLZ-1 > > qcom,snoc-host-cap-8bit-quirk didn't help. If I use this > quirk, then the host capability request does get accepted, > but we run into fatal "msa info req rejected" error and > WiFi interface doesn't come up. > > Attempts are being made to debug the failure reasons but no > luck so far. Hence this device specific workaround instead > of checking for QMI_ERR_MALFORMED_MSG_V01 error message. > Tried ath10k/WCN3990/hw1.0/wlanmdsp.mbn from the upstream > linux-firmware project but it didn't help and neither did > building board-2.bin file from stock bdwlan* files. > > This workaround will be removed once we have a viable fix. > Thanks to postmarketOS guys for catching this. > > Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx> > --- > We dropped this workaround last time in the favor of > a generic dts quirk to skip host cap check. But that > is under under discussion for a while now, > https://lkml.org/lkml/2020/9/25/1119, so resending > this short term workaround for the time being. > I still want the quirk, because we have this on other machines as well. > v2: ath10k-check complained about a too long line last > time, so moved the comment to a new line. > > drivers/net/wireless/ath/ath10k/qmi.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c > index ae6b1f402adf..1c58b0ff1d29 100644 > --- a/drivers/net/wireless/ath/ath10k/qmi.c > +++ b/drivers/net/wireless/ath/ath10k/qmi.c > @@ -653,7 +653,9 @@ static int ath10k_qmi_host_cap_send_sync(struct ath10k_qmi *qmi) > > /* older FW didn't support this request, which is not fatal */ > if (resp.resp.result != QMI_RESULT_SUCCESS_V01 && > - resp.resp.error != QMI_ERR_NOT_SUPPORTED_V01) { > + resp.resp.error != QMI_ERR_NOT_SUPPORTED_V01 && > + /* Xiaomi Poco F1 workaround */ If we go with a temporary approach this comment should describe why this is here. (And it probably shouldn't be in the middle of the expression list in the conditional. Regards, Bjorn > + !of_machine_is_compatible("xiaomi,beryllium")) { > ath10k_err(ar, "host capability request rejected: %d\n", resp.resp.error); > ret = -EINVAL; > goto out; > -- > 2.7.4 >
