Differential D38854
rtwn: Fix RTL8188EU and RTL8192EU cannot associate in STA mode Authored by cy on Mar 2 2023, 5:37 PM. Tags None Referenced Files
Details On some systems RTL8188EU and RTL8192EU will fail to associate in STA mode while While here fix RTL8192EU power off and power on hang for the same reason. Tested locally and in PR/247528.
Diff Detail
Event TimelineComment Actions Add similar fix for RTL8188EU as reported by rkoberman@gmail.com also in PR/247528. My 8188EU never experienced this problem so testing whether this fixes the problem or not must be confirmed by the person reporting it. This would be a separate commit. Comment Actions i understand the fix, but the whole code layout for rtwn is to avoid the HW code knowing too much about the bus/transport. Honestly, I think we should move the delay stuff into the normal rtwn_softc and use it there, and only configure it for usb. That way the chipset HW code doesn't need to include the USB specific bits. Comment Actions Thanks. I'll rework the patch and either update this revision or abandon it and open a new one instead. Comment Actions With the patch I get an instant reboot (no coredump), so something is fishy. Sorry for not having much more information. Comment Actions panic: _mtx_lock_sleep: recursed on non-recursive mutex rtwn0 @ /usr/src/sys/dev/rtwn/rtl8188e/usb/r88eu_init.c:87 #6 0xffffffff80bd01a3 in panic (fmt=<unavailable>) at /usr/src/sys/kern/kern_shutdown.c:907 #7 0xffffffff80baae8d in __mtx_lock_sleep (c=c@entry=0xfffffe00d8789018, v=18446741878244833056, opts=opts@entry=0, file=file@entry=0xffffffff82aa8a54 "/usr/src/sys/dev/rtwn/rtl8188e/usb/r88eu_init.c", line=line@entry=87) at /usr/src/sys/kern/kern_mutex.c:546 #8 0xffffffff80baa9d5 in __mtx_lock_flags (c=0xfffffe00d8789018, opts=0, file=0xffffffff82aa8a54 "/usr/src/sys/dev/rtwn/rtl8188e/usb/r88eu_init.c", line=87) at /usr/src/sys/kern/kern_mutex.c:284 #9 0xffffffff82aa4701 in r88eu_power_on (sc=0xfffffe00d8782000) at /usr/src/sys/dev/rtwn/rtl8188e/usb/r88eu_init.c:87 #10 0xffffffff82ac1739 in rtwn_init (sc=0xfffffe00d8782000) at /usr/src/sys/dev/rtwn/if_rtwn.c:1789 #11 rtwn_parent (ic=0xfffffe00d8782000) at /usr/src/sys/dev/rtwn/if_rtwn.c:1368 #12 0xffffffff80c3452a in taskqueue_run_locked ( queue=queue@entry=0xfffff8000896ba00) at /usr/src/sys/kern/subr_taskqueue.c:514 Comment Actions Thanks. I'm taking adrian@'s advice to refactor, placing the added USB code into the bus portion of the code. The implementation will change. Thus it probably makes sense to abandon this revision and start a new revision when it's ready. As I'm working on other $JOB and FreeBSD things this week I'll start on this again next week. Comment Actions This is now two commits that: rtwn: Fix RTL8192EU cannot associate in STA mode On some systems RTL8192EU will fail to associate in STA mode while While here fix RTL8192EU power off and power on hang for the same reason. PR: 247528 AND: rtwn: Fix RTL8188EU cannot associate in STA mode As with RTL8192EU a user reported that the RTL8188EU has identical PR: 247528 The commits will be committed separately but are both listed here because they solve the same USB problem on two chipsets. Other chipsets, which I have here, do not have this problem. |