On 05/23/2012 03:55 PM, Seth Forshee wrote: > On Wed, May 23, 2012 at 11:30:38AM +0200, Arend van Spriel wrote: >> On 05/22/2012 06:52 PM, Seth Forshee wrote: >>> Hi Arend, >>> >>> I've inquired about this issue on the list once before, but I thought >>> I'd try once again to see if Broadcom can offer any suggestions. >>> >>> Recent MacBook Pros with BCM4331 wireless have a strange problem. Tx >>> doesn't work after S3, but only if no external power is applied during >>> the resume. mac80211 reports mostly timeouts for responses to probe >>> requests, but analysis with wireshark shows no frames from the BCM4331 >>> on the air. The only way I've found to recover is to reload both b43 and >>> bcma; reloading b43 alone is not enough. >> >> Yikes. I recently did suspend/resume and hibernate testing with BCM43224 >> (so brcmsmac and bcma), but my system was on AC. I will execute them >> again on battery. I want to make sure it is not a BCM4331 specific issue. > > I'm also testing a Macbook Air with BCM43224 using brcmsmac, and it does > not suffer from the same issue. Good to know. I will check whether there are any known issues with BCM4331 that could explain this. >>> I've checked the values of MACCTL and the DMA TXCTL registers, since >>> these are the ones used by brcmsmac to mute tx, but those look okay. Any >>> suggestions of other things to check? My next step would be to start >>> looking at the state of the phy and radio, but since we don't have much >>> information about what the registers there actually do some suggestions >>> would be helpful. >> >> When going to S3 the driver is told by mac80211 .stop callback to abort >> driver operation so I do not expect b43 has a problem. Instead we >> probably have to look at the host PCI code in bcma, but before going >> there let me execute my tests. >> >> Can you tell me on what kernel version you see this issue. I would also >> like to have a look at your kernel log. > > I'm still seeing it in both 3.4 and wireless-testing. Attached is dmesg > from wireless-testing. Nothing really looks wrong in there, but then again there are not much b43/bcma related messages. Gr. AvS -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
