Ping-Ke Shih <pkshih@xxxxxxxxxxx> wrote: > The DMA channel of firmware command doesn't use TX WD (WiFi descriptor), so > don't need to consider number of TX WD as factor of TX resource. Otherwise, > during pause state (a transient state to switch to/from low power mode) > firmware commands could be dropped and driver throws warnings suddenly: > > rtw89_8852ce 0000:04:00.0: no tx fwcmd resource > rtw89_8852ce 0000:04:00.0: failed to send h2c > > The case we met is that driver sends RSSI strength of firmware command at > RX path that could be running concurrently with switching low power mode. > The missing of this firmware command doesn't affect user experiences, > because the RSSI strength will be updated again after a while. > > The DMA descriptors of normal packets has three layers like: > 1 patch(es) applied to rtw-next branch of rtw.git, thanks. c6330b129786 wifi: rtw89: pci: correct TX resource checking for PCI DMA channel of firmware command --- https://github.com/pkshih/rtw.git
