4.9-stable review patch. If anyone has any objections, please let me know.
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From: Stefan Agner stefan@agner.ch
commit 9306e996574f7f57136a62e49cd0075f85713623 upstream.
With commit 0a70c998d0c5 ("drm/fsl-dcu: enable pixel clock when enabling CRTC") the pixel clock is controlled by the CRTC code. Disabling the pixel clock in suspend leads to a warning due to the second clk_disable_unprepare call: WARNING: CPU: 0 PID: 359 at drivers/clk/clk.c:594 clk_core_disable+0x8c/0x90
Remove clk_disable_unprepare call for pixel clock to avoid unbalanced clock disable on suspend.
Fixes: 0a70c998d0c5 ("drm/fsl-dcu: enable pixel clock when enabling CRTC") Signed-off-by: Stefan Agner stefan@agner.ch Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 1 - 1 file changed, 1 deletion(-)
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -243,7 +243,6 @@ static int fsl_dcu_drm_pm_suspend(struct return PTR_ERR(fsl_dev->state); }
- clk_disable_unprepare(fsl_dev->pix_clk); clk_disable_unprepare(fsl_dev->clk);
return 0;