On Fri, Jan 04, 2013 at 09:08:12AM +0200, Lauri Hintsala wrote: > On 11/29/2012 01:55 PM, Lothar Waßmann wrote: > >Hi, > > > >adding Juergen Beisert as the driver's author to the recipient list. > > > >Lothar Waßmann writes: > >>The VDCTRL4 register does not provide the MXS SET/CLR/TOGGLE feature. > >>The write in mxsfb_disable_controller() sets the data_cnt for the LCD > >>DMA to 0 which obviously means the max. count for the LCD DMA and > >>leads to overwriting arbitrary memory when the display is unblanked. > >> > >>Note: I already sent this patch in December 2011 but noone picked it up obviously. > >> > >>Signed-off-by: Lothar Waßmann <LW@xxxxxxxxxxxxxxxxxxx> > > Tested-by: Lauri Hintsala <lauri.hintsala@xxxxxxxxxxxx> > > This fixes the CPU freezing. I really recommend to apply this patch > into mainline soon because unblanking freezes the whole system!!! > > Default value of consoleblank parameter is 600 seconds and the whole > system crashes every time when framebuffer console is activated > after that timeout. I wonder why this issue is still open in > mainline kernel. Part of the reason is the FB maintainer's absence. Let me try to send it through arm-soc tree. > > Should this patch be added into stable versions too? > Yes, will do. Shawn -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
