f96306f989
The cleanup here is somewhat tricky, since we can't tell apart the allocated minor index from 0. So register a cleanup action first, and if the index allocation fails, unregister that cleanup action again to avoid bad mistakes. The kdev for the minor already handles NULL, so no problem there. Hence add drmm_remove_action() to the drm_managed library. v2: Make pointer math around void ** consistent with what Laurent suggested. v3: Use drmm_add_action_or_reset and remove drmm_remove_action. Noticed because of some questions from Thomas. This also means we need to move the drmm_add_action_or_reset helper earlier in the series. v4: Uh ... fix slightly embarrassing bug CI spotted. Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200324203936.3330994-1-daniel.vetter@ffwll.ch
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef _DRM_MANAGED_H_
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#define _DRM_MANAGED_H_
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#include <linux/gfp.h>
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#include <linux/types.h>
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struct drm_device;
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typedef void (*drmres_release_t)(struct drm_device *dev, void *res);
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#define drmm_add_action(dev, action, data) \
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__drmm_add_action(dev, action, data, #action)
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int __must_check __drmm_add_action(struct drm_device *dev,
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drmres_release_t action,
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void *data, const char *name);
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#define drmm_add_action_or_reset(dev, action, data) \
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__drmm_add_action_or_reset(dev, action, data, #action)
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int __must_check __drmm_add_action_or_reset(struct drm_device *dev,
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drmres_release_t action,
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void *data, const char *name);
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void drmm_add_final_kfree(struct drm_device *dev, void *container);
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void *drmm_kmalloc(struct drm_device *dev, size_t size, gfp_t gfp) __malloc;
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static inline void *drmm_kzalloc(struct drm_device *dev, size_t size, gfp_t gfp)
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{
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return drmm_kmalloc(dev, size, gfp | __GFP_ZERO);
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}
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char *drmm_kstrdup(struct drm_device *dev, const char *s, gfp_t gfp);
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void drmm_kfree(struct drm_device *dev, void *data);
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#endif
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