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DRM drivers share a common address_space across all character-devices of a
single DRM device. This allows simple buffer eviction and mapping-control.
However, DRM core currently waits for the first ->open() on any char-dev
to mark the underlying inode as backing inode of the device. This delayed
initialization causes ugly conditions all over the place:
if (dev->dev_mapping)
do_sth();
To avoid delayed initialization and to stop reusing the inode of the
char-dev, we allocate an anonymous inode for each DRM device and reset
filp->f_mapping to it on ->open().
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| omap_connector.c | ||
| omap_crtc.c | ||
| omap_debugfs.c | ||
| omap_dmm_priv.h | ||
| omap_dmm_tiler.c | ||
| omap_dmm_tiler.h | ||
| omap_drv.c | ||
| omap_drv.h | ||
| omap_encoder.c | ||
| omap_fb.c | ||
| omap_fbdev.c | ||
| omap_gem_dmabuf.c | ||
| omap_gem.c | ||
| omap_irq.c | ||
| omap_plane.c | ||
| tcm-sita.c | ||
| tcm-sita.h | ||
| tcm.h | ||
| TODO | ||