PCI bus detaching when driver crashing?

[Datasmurf]

On Thu, 3 Aug 2017 22:17:17 -0400
Farhan Khan <khanzf at gmail.com> wrote:

> Hi all,
> 
> I am trying to write the Realtek 8188e (pci) driver for FreeBSD. I am
> making slow incremental progress, and having the driver safely exit
> out (as opposed to a segfault). I noticed that when the device
> detaches, due to an error in the driver, the entire pci bus will also
> detach! For example, here is my kernel output:
> 
> rtwn0: rtwn_load_firmware: failed to upload firmware rtwn-rtl8188eefw
> (error 60)
> rtwn0: detached
> pci2: detached

I have/had seen similar errors with my Hardware. T61 with Pro/Wireless
4965AGN and the if_iwn driver.  I get Firmware error and then from time
to time the pci bus gets detached as well. But i did not think of it as
a Problem of the driver or code but of my faulty old Hardware.
I have to reboot to get it working.

Sorry at the moment i have no log about it. Uptime is 2 days since
upgrading to 11.1 Release. 


> 
> The first line is where the code crashes: sys/dev/rtwn/if_rtwn_fw.c
> line 129
> https://github.com/khanzf/freebsd/blob/103c05369b1ced770a2cadc9468e0134c8d9421b/sys/dev/rtwn/if_rtwn_fw.c#L129
> 

404

> Why would this result in the entire pci2 bus detatching? Strangely
> enough, I did not have this problem a few months ago, then it
> suddenly began. This is significantly slowing down my workflow, and
> would be nice to have it resolved. Otherwise, I have to reboot to
> bring pci2 back up.
> 
> Any insight?
> Thanks!
> 
> Farhan Khan
> _______________________________________________
> freebsd-hackers at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to
> "freebsd-hackers-unsubscribe at freebsd.org"

Greetings Daniel

-- 
#irc - real netizens last resort