On Wed, May 23, 2012 at 11:15:08AM +0200, Hauke Mehrtens 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. > > > > 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. > > > > Thanks, > > Seth > > Hi Seth, > > as reloading bcma helps could you try the attached patch which runs the > code for pci core initialisation on resume again. I saw some comments > about some functions which should be called on resume for pci core > initialisation in brcmsmac. > > The other patch adds some pci workarounds for recent apple devices like > yours. > > Both patches are not even compile tested. Hi Hauke, Thanks for the suggestions. I had actually already tried all of these workarounds a while back without success (the pci reinitialization was the very first thing I thought of as well). I went ahead and tried you patches on top of wireless-next anyway, and still no joy. Thanks, Seth -- 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
