Re: [PATCH v2] drm: atmel-hlcdc: Atomic mode-setting conversion

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Hello Boris,

On Fri, Feb 06, 2015 at 04:22:23PM +0100, Boris Brezillon wrote:
> Convert the HLCDC driver to atomic mode-setting.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> ---

I am getting the following trace with this patch applied, which seems 
pretty straightforward to fix.

Apart from that, it works perfectly, you can add my:

Tested-by: Sylvain Rochet <sylvain.rochet@xxxxxxxxxxxx>



------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at drivers/clk/clk.c:992 clk_disable+0x28/0x34()
Modules linked in:
CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 3.19.0-rc7-next-20150204+ #90
Hardware name: Atmel SAMA5 (Device Tree)
Workqueue: events output_poll_execute
[<c0013284>] (unwind_backtrace) from [<c0010f90>] (show_stack+0x10/0x14)
[<c0010f90>] (show_stack) from [<c001b0fc>] (warn_slowpath_common+0x84/0xb0)
[<c001b0fc>] (warn_slowpath_common) from [<c001b1c4>] (warn_slowpath_null+0x1c/0x24)
[<c001b1c4>] (warn_slowpath_null) from [<c0355418>] (clk_disable+0x28/0x34)
[<c0355418>] (clk_disable) from [<c024b1c0>] (atmel_hlcdc_crtc_disable+0xe8/0x114)
[<c024b1c0>] (atmel_hlcdc_crtc_disable) from [<c02209dc>] (__drm_helper_disable_unused_functions+0xa4/0xd8)
[<c02209dc>] (__drm_helper_disable_unused_functions) from [<c0220a24>] (drm_helper_disable_unused_functions+0x14/0x20)
[<c0220a24>] (drm_helper_disable_unused_functions) from [<c022d078>] (drm_fbdev_cma_init+0x78/0xfc)
[<c022d078>] (drm_fbdev_cma_init) from [<c024b7a8>] (atmel_hlcdc_fb_output_poll_changed+0x30/0x40)
[<c024b7a8>] (atmel_hlcdc_fb_output_poll_changed) from [<c0222800>] (output_poll_execute+0x148/0x188)
[<c0222800>] (output_poll_execute) from [<c002bf94>] (process_one_work+0xfc/0x310)
[<c002bf94>] (process_one_work) from [<c002caec>] (worker_thread+0x60/0x478)
[<c002caec>] (worker_thread) from [<c00305b4>] (kthread+0xd4/0xec)
[<c00305b4>] (kthread) from [<c000e4a0>] (ret_from_fork+0x14/0x34)
---[ end trace 9500ebf8d7076b60 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9 at drivers/clk/clk.c:898 clk_unprepare+0x24/0x2c()
Modules linked in:
CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G        W      3.19.0-rc7-next-20150204+ #90
Hardware name: Atmel SAMA5 (Device Tree)
Workqueue: events output_poll_execute
[<c0013284>] (unwind_backtrace) from [<c0010f90>] (show_stack+0x10/0x14)
[<c0010f90>] (show_stack) from [<c001b0fc>] (warn_slowpath_common+0x84/0xb0)
[<c001b0fc>] (warn_slowpath_common) from [<c001b1c4>] (warn_slowpath_null+0x1c/0x24)
[<c001b1c4>] (warn_slowpath_null) from [<c03553e8>] (clk_unprepare+0x24/0x2c)
[<c03553e8>] (clk_unprepare) from [<c024b1c8>] (atmel_hlcdc_crtc_disable+0xf0/0x114)
[<c024b1c8>] (atmel_hlcdc_crtc_disable) from [<c02209dc>] (__drm_helper_disable_unused_functions+0xa4/0xd8)
[<c02209dc>] (__drm_helper_disable_unused_functions) from [<c0220a24>] (drm_helper_disable_unused_functions+0x14/0x20)
[<c0220a24>] (drm_helper_disable_unused_functions) from [<c022d078>] (drm_fbdev_cma_init+0x78/0xfc)
[<c022d078>] (drm_fbdev_cma_init) from [<c024b7a8>] (atmel_hlcdc_fb_output_poll_changed+0x30/0x40)
[<c024b7a8>] (atmel_hlcdc_fb_output_poll_changed) from [<c0222800>] (output_poll_execute+0x148/0x188)
[<c0222800>] (output_poll_execute) from [<c002bf94>] (process_one_work+0xfc/0x310)
[<c002bf94>] (process_one_work) from [<c002caec>] (worker_thread+0x60/0x478)
[<c002caec>] (worker_thread) from [<c00305b4>] (kthread+0xd4/0xec)
[<c00305b4>] (kthread) from [<c000e4a0>] (ret_from_fork+0x14/0x34)
---[ end trace 9500ebf8d7076b61 ]--- 


Sylvain
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