nvidia-390xx-kmod-0029-kernel-6.6-backport-drm_gem_prime_handle_to_fd-changes-from-470.patch

From df6b55bb77ad479fcbcbcdaffd756369ed9dc4fb Mon Sep 17 00:00:00 2001
From: Andreas Beckmann <anbe@debian.org>
Date: Wed, 1 Nov 2023 10:31:40 +0100
Subject: [PATCH] backport drm_gem_prime_handle_to_fd changes from 470.223.02

---
 nvidia-drm/nvidia-drm-drv.c  | 12 ++++++++++++
 nvidia-drm/nvidia-drm.Kbuild |  1 +
 2 files changed, 13 insertions(+)

diff --git a/nvidia-drm/nvidia-drm-drv.c b/nvidia-drm/nvidia-drm-drv.c
index 7e6f5e8..c0cc77a 100644
--- a/nvidia-drm/nvidia-drm-drv.c
+++ b/nvidia-drm/nvidia-drm-drv.c
@@ -705,7 +705,19 @@ static struct drm_driver nv_drm_driver = {
     .ioctls                 = nv_drm_ioctls,
     .num_ioctls             = ARRAY_SIZE(nv_drm_ioctls),
 
+/*
+ * linux-next commit 71a7974ac701 ("drm/prime: Unexport helpers for fd/handle
+ * conversion") unexports drm_gem_prime_handle_to_fd() and
+ * drm_gem_prime_fd_to_handle().
+ *
+ * Prior linux-next commit 6b85aa68d9d5 ("drm: Enable PRIME import/export for
+ * all drivers") made these helpers the default when .prime_handle_to_fd /
+ * .prime_fd_to_handle are unspecified, so it's fine to just skip specifying
+ * them if the helpers aren't present.
+ */
+#if NV_IS_EXPORT_SYMBOL_PRESENT_drm_gem_prime_handle_to_fd
     .prime_handle_to_fd     = drm_gem_prime_handle_to_fd,
+#endif
 
 #if defined(NV_DRM_DRIVER_HAS_GEM_PRIME_CALLBACKS)
     .gem_prime_export       = nv_drm_gem_prime_export,
diff --git a/nvidia-drm/nvidia-drm.Kbuild b/nvidia-drm/nvidia-drm.Kbuild
index 60b0412..2a8148f 100644
--- a/nvidia-drm/nvidia-drm.Kbuild
+++ b/nvidia-drm/nvidia-drm.Kbuild
@@ -51,6 +51,7 @@ NV_CONFTEST_GENERIC_COMPILE_TESTS += drm_available
 NV_CONFTEST_GENERIC_COMPILE_TESTS += drm_atomic_available
 NV_CONFTEST_GENERIC_COMPILE_TESTS += is_export_symbol_gpl_refcount_inc
 NV_CONFTEST_GENERIC_COMPILE_TESTS += is_export_symbol_gpl_refcount_dec_and_test
+NV_CONFTEST_GENERIC_COMPILE_TESTS += is_export_symbol_present_drm_gem_prime_handle_to_fd
 
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += drm_dev_unref
 NV_CONFTEST_FUNCTION_COMPILE_TESTS += drm_reinit_primary_mode_group
-- 
2.20.1