31 Mar
2019
31 Mar
'19
12:20 p.m.
On Sun, Mar 17, 2019 at 06:25:02AM +0800, Yifeng Li wrote:
On a Thinkpad s30 (Pentium III / i440MX, Lynx3DM), blanking the display or starting the X server will crash and freeze the system, or garble the display.
Experiments showed this problem can mostly be solved by adjusting the order of register writes. Also, sm712fb failed to consider the difference of clock frequency when unblanking the display, and programs the clock for SM712 to SM720.
Fix them by adjusting the order of register writes, and adding an additional check for SM720 for programming the clock frequency.
Signed-off-by: Yifeng Li tomli@tomli.me Cc: stable@vger.kernel.org # v4.4+
Tested-by: Sudip Mukherjee sudipm.mukherjee@gmail.com
-- Regards Sudip