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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2010-09-03 07:20:23 (GMT) |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-09-14 08:23:21 (GMT) |
| commit | 6de9edd5bde0cdfea12e9948690e53ec669c3018 (patch) | |
| tree | 638602a3d7726b27ae6ab85ef45f4f11c38c0283 /include/video/sh_mobile_lcdc.h | |
| parent | 89712699d7bc9cc93602407e0e9bc2490b771400 (diff) | |
| download | linux-6de9edd5bde0cdfea12e9948690e53ec669c3018.tar.xz | |
fbdev: sh_mobile_hdmi: implement locking
The SH-Mobile HDMI driver runs in several contexts: ISR, delayed work-queue,
task context, when called from the sh_mobile_lcdc framebuffer driver. This
creates ample race possibilities. Even though most these races are purely
theoretical, it is better to close them. To trace fb_info validity we install a
notification callback in the HDMI driver, and the only way for it to get to
driver internal data is by using struct sh_mobile_lcdc_chan, therefore it had
to be extracted into a separate common header.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/video/sh_mobile_lcdc.h')
| -rw-r--r-- | include/video/sh_mobile_lcdc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/video/sh_mobile_lcdc.h b/include/video/sh_mobile_lcdc.h index 19c69d7..daabae5 100644 --- a/include/video/sh_mobile_lcdc.h +++ b/include/video/sh_mobile_lcdc.h @@ -49,7 +49,9 @@ struct sh_mobile_lcdc_sys_bus_ops { unsigned long (*read_data)(void *handle); }; +struct module; struct sh_mobile_lcdc_board_cfg { + struct module *owner; void *board_data; int (*setup_sys)(void *board_data, void *sys_ops_handle, struct sh_mobile_lcdc_sys_bus_ops *sys_ops); |