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drm/fsl-dcu: avoid disabling pixel clock twice on suspend

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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>
This commit is contained in:
Stefan Agner 2017-11-09 15:39:56 +01:00 committed by Greg Kroah-Hartman
parent 51a2a68fde
commit c8111b1885
1 changed files with 0 additions and 1 deletions
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drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
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@ -210,7 +210,6 @@ static int fsl_dcu_drm_pm_suspend(struct device *dev)
return PTR_ERR(fsl_dev->state);
}
clk_disable_unprepare(fsl_dev->pix_clk);
clk_disable_unprepare(fsl_dev->clk);
return 0;