[PATCH 6/7] wifi: ath12k: do not restore ASPM in case of single MSI vector

[Jeff Johnson]

On 11/20/2023 2:15 AM, Kang Yang wrote:
> Current code enables ASPM by default, it allows MHI to enter M2 state.
> In case of one MSI vector, system hang is observed if ath12k does MHI
> register reading in this state.
> 
> The workaround here is to prevent MHI from entering M2 state, this can
> be done by disabling ASPM if only one MSI vector is used. When using 32
> vectors ASPM is enabled as before.
> 
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
> 
> Signed-off-by: Kang Yang <quic_kangyang at quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>