On Sun, Aug 01, 2010 at 08:13:02AM -0700, David VomLehn wrote: > On Sat, Jul 31, 2010 at 12:56:50PM -0700, Greg KH wrote: > > On Fri, Jul 30, 2010 at 07:19:41PM -0700, David VomLehn wrote: > > > Make reservation of write URB atomic. > > > > Why? What is this fixing? What is the problem you are seeing? > > More description: > > This is intended to fix a problem seen with the Amtel sam-ba tool by > Alexander Stein (alexander.stein@xxxxxxxxxxxxxxxxxxxxx). It appears > when using an A91 controller. He bisected it to commit: > > 8e8dce065088833fc418bfa5fbf035cb0726c04c: USB: use kfifo to buffer usb-generic serial writes > > The current patch fixes a problem when using a USB serial device as the > kernel console and as /dev/console. The URB allocation is not atomic and > an URB can be doubly allocated, leading to a continual rejection of URB > submissions. The fix puts all pieces of the URB allocation in the same > spinlock-protected section of code. Great, care to resend the patch with this information in it so I can apply it? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
