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include/drm/drm_prime: Backport drm_gem_dmabuf_mmap() api #516

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Merged
akanksh5-intc merged 1 commit into from
Aug 27, 2026
Merged

include/drm/drm_prime: Backport drm_gem_dmabuf_mmap() api #516

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20 changes: 20 additions & 0 deletions autotools/m4/drm_gem_dmabuf_mmap.m4
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
dnl #
dnl # 0adec22702d4
dnl # drm: Remove struct drm_driver.gem_prime_mmap
dnl #
AC_DEFUN([AC_DRM_DRIVER_GEM_PRIME_MMAP_NOT_PRESENT], [
AC_KERNEL_DO_BACKGROUND([
AC_KERNEL_TRY_COMPILE([
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
],[
struct drm_driver drv;
drv.gem_prime_mmap = NULL;
(void)drv;
],[
],[
AC_DEFINE(BPM_DRM_DRIVER_GEM_PRIME_MMAP_NOT_PRESENT, 1,
[struct drm_driver does not have gem_prime_mmap callback])
])
])
])
1 change: 1 addition & 0 deletions autotools/m4/xe.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,7 @@ AC_DEFUN([AC_XE_CONFIG], [
AC_MEI_CLASS_BUS_REGISTER_CONST_ARGS_NOT_PRESENT
AC_PCI_RESIZE_RESOURCE_VF_BARS_NOT_PRESENT
AC_DEV_PM_SMART_SUSPEND_NOT_PRESENT
AC_DRM_DRIVER_GEM_PRIME_MMAP_NOT_PRESENT

dnl # SVM-related probes
AC_SHRINKER_ALLOC_NOT_PRESENT
Expand Down
22 changes: 22 additions & 0 deletions backport/backport-include/drm/drm_prime.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _DRM_PRIME_H
#define _DRM_PRIME_H

#include_next <drm/drm_prime.h>
#include <linux/dma-buf.h>

#ifdef BPM_DRM_DRIVER_GEM_PRIME_MMAP_NOT_PRESENT
static inline int backport_drm_gem_dmabuf_mmap(struct dma_buf *dma_buf,
struct vm_area_struct *vma)
{
struct drm_gem_object *obj = dma_buf->priv;
return drm_gem_prime_mmap(obj, vma);
}
#undef drm_gem_dmabuf_mmap
#define drm_gem_dmabuf_mmap(dma_buf, vma) \
backport_drm_gem_dmabuf_mmap((dma_buf), (vma))

#endif /* BPM_DRM_DRIVER_GEM_PRIME_MMAP_NOT_PRESENT */

#endif /* _DRM_PRIME_H */