Hello. On 01/18/2013 10:59 PM, Greg KH wrote:
>>>> Serialize usb-storage operations with usbfs and 'cat >>>> /proc/bus/usb/devices', >>>> so that they cannot disturb storage by seemingly harmless control reads. >>>> This patch was adapted from 2.4 patches by Pete Zaitcev. The initial >>>> patch of >>>> the series dates back to 2004 and it unfortunately wasn't applied to 2.6 >>>> in the >>>> same form back then (it was applied in another form and immediately >>>> reverted). >>>> Despite 8+ years passing from that moment, the vendors didn't stop >>>> producing >>>> USB devices that require this kind of patch. Two recent examples are >>>> SanDisk >>>> Cruzer Slice 8GB and Kingston DataTraveller 100 G2 32GB. In the latter >>>> case, >>>> even the enumeration fails as the INQUIRY command normally takes 2.8 >>>> seconds to >>>> finish, so 'udev' also comes into action with its control requests, with >>>> neither >>>> completing normally. >>>> Signed-off-by: Sergei Shtylyov <sshtyl...@ru.mvista.com> >>>> Cc: sta...@vger.kernel.org >>>> --- >>>> This patch is atop of 'usb-linus' branch of Greg's tree. >>>> It has been boot tested with non-buggy USB stick only. >>> I really want to see this tested on the hardware that it is supposed to >>> fix the problem for, otherwise it's kind of pointless, right? >> Don't forget that the same code is working in 2.4 for several years. > In mainline? Or some random vendor-specific kernel branch where we have > no visiblity into? :) Mainline, of course. >> It would be hard for me, I'm afraid, to arrange testing this on the >> modern broken h/w in the near future as I'm being switched from >> working with MontaVista to another company starting next week. Also, >> we've already internally committed v1 of the patch as the fix for the >> issue... > Then that kind of implies that you have some way of testing it, Only the customer have tested it. I won't be working with this customer for some months at last... > otherwise why would you want to apply it to a kernel you have to send to > people? :) I just have a habit to push upstream every useful patch I have to make, whenever possible. > Yes, I am being a pain, but for a change like this, I think it deserves > it, sorry. Well, at least I've done what I could... > greg k-h WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
