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ath10k: qmi: Sleep for a while before assigning MSA memory 

Unless we sleep for a while before transitioning the MSA memory to WLAN
the MPSS.AT.4.0.c2-01184-SDM845_GEN_PACK-1 firmware triggers a security
violation fairly reliably. Unforutnately recovering from this failure
always results in the entire system freezing.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Bjorn Andersson 2019-11-13 15:35:58 -08:00 committed by Kalle Valo
parent f4fe2e5334
commit b70b3a36ec
1 changed files with 7 additions and 0 deletions
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7
drivers/net/wireless/ath/ath10k/qmi.c
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@ -773,6 +773,13 @@ static void ath10k_qmi_event_server_arrive(struct ath10k_qmi *qmi)
if (ret)
return;
/*
* HACK: sleep for a while inbetween receiving the msa info response
* and the XPU update to prevent SDM845 from crashing due to a security
* violation, when running MPSS.AT.4.0.c2-01184-SDM845_GEN_PACK-1.
*/
msleep(20);
ret = ath10k_qmi_setup_msa_permissions(qmi);
if (ret)
return;