On 03/04/15 07:51, Liu Ying wrote: > The LCDIF engines embedded in i.MX6sl and i.MX6sx SoCs need the axi clock > as the engine's system clock. The clock should be enabled when accessing > LCDIF registers, otherwise the kernel would hang up. We should also keep > the clock enabled when the engine is being active to scan out frames from > memory. This patch makes sure the axi clock is enabled when accessing > registers so that the kernel hang up issue can be fixed. > > Reported-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> > Tested-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> > Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+ > Signed-off-by: Liu Ying <Ying.Liu@xxxxxxxxxxxxx> > --- > v3->v4: > * To address Tomi's comment, enable/disable the axi clock in > mxsfb_pan_display() directly instead of checking the host->enabled flag. > > v2->v3: > * To address Tomi's comment, improve the commit message only. > > v1->v2: > * Add 'Tested-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>' tag. > * Add 'Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+' tag. > > drivers/video/fbdev/mxsfb.c | 68 +++++++++++++++++++++++++++++++++++---------- > 1 file changed, 54 insertions(+), 14 deletions(-) Thanks, queued for 4.2. Tomi
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