drm/fb-helper: Add a dummy remove_conflicting_framebuffers

Lots of drivers don't properly compile without this when CONFIG_FB=n.
It's kinda a hack, but since CONFIG_FB doesn't stub any fucntions when
it's disabled I think it makes sense to add it to drm_fb_helper.h.

Long term we probably need to rethink all the logic to unload firmware
framebuffer drivers, at least if we want to be able to move away from
CONFIG_FB and fbcon.

v2: Unfortunately just stubbing out remove_conflicting_framebuffers in
drm_fb_helper.h upset gcc about static vs. non-static declarations, so
a new wrapper it needs to be. Means more churn :(

Cc: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: tomi.valkeinen@ti.com
Cc: dh.herrmann@gmail.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470847958-28465-2-git-send-email-daniel.vetter@ffwll.ch

12 files changed, 30 insertions, 11 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 9aa533cf4ad1..11263c5b9967 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -341,7 +341,7 @@ static int amdgpu_kick_out_firmware_fb(struct pci_dev *pdev)
 #ifdef CONFIG_X86
         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
-        remove_conflicting_framebuffers(ap, "amdgpudrmfb", primary);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "amdgpudrmfb", primary);
         kfree(ap);
 
         return 0;
diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c
index abace82de6ea..277654abe0f7 100644
--- a/drivers/gpu/drm/bochs/bochs_drv.c
+++ b/drivers/gpu/drm/bochs/bochs_drv.c
@@ -8,6 +8,7 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <drm/drm_fb_helper.h>
 
 #include "bochs.h"
 
@@ -153,7 +154,7 @@ static int bochs_kick_out_firmware_fb(struct pci_dev *pdev)
 
         ap->ranges[0].base = pci_resource_start(pdev, 0);
         ap->ranges[0].size = pci_resource_len(pdev, 0);
-        remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "bochsdrmfb", false);
         kfree(ap);
 
         return 0;
diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c
index b05f7eae32ce..6c76d125995b 100644
--- a/drivers/gpu/drm/cirrus/cirrus_drv.c
+++ b/drivers/gpu/drm/cirrus/cirrus_drv.c
@@ -57,7 +57,7 @@ static int cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
 #ifdef CONFIG_X86
         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
-        remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
         kfree(ap);
 
         return 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 95ddd56b89f0..40cd16cf9772 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -706,7 +706,7 @@ static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
         primary =
                 pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 
-        ret = remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
+        ret = drm_fb_helper_remove_conflicting_framebuffers(ap, "inteldrmfb", primary);
 
         kfree(ap);
 
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c
index 2b4b125eebc3..1443b3a34775 100644
--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -56,7 +56,7 @@ static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
 #ifdef CONFIG_X86
         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
-        remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
         kfree(ap);
 }
 
diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index 13798b3e6beb..e79cbc25ae3c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -135,7 +135,7 @@ static int mga_vram_init(struct mga_device *mdev)
         aper->ranges[0].base = mdev->mc.vram_base;
         aper->ranges[0].size = mdev->mc.vram_window;
 
-        remove_conflicting_framebuffers(aper, "mgafb", true);
+        drm_fb_helper_remove_conflicting_framebuffers(aper, "mgafb", true);
         kfree(aper);
 
         if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window,
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 66c1280c0f1f..652ab111dd74 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -351,7 +351,7 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
         boot = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
         if (nouveau_modeset != 2)
-                remove_conflicting_framebuffers(aper, "nouveaufb", boot);
+                drm_fb_helper_remove_conflicting_framebuffers(aper, "nouveaufb", boot);
         kfree(aper);
 
         ret = nvkm_device_pci_new(pdev, nouveau_config, nouveau_debug,
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index c01a7c6abb49..90f2ff217b31 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -39,6 +39,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/vga_switcheroo.h>
 #include <drm/drm_gem.h>
+#include <drm/drm_fb_helper.h>
 
 #include "drm_crtc_helper.h"
 #include "radeon_kfd.h"
@@ -324,7 +325,7 @@ static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
 #ifdef CONFIG_X86
         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 #endif
-        remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
         kfree(ap);
 
         return 0;
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 7092daaf6c43..8913c151b37f 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -17,6 +17,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_helper.h>
 
 #include "sun4i_crtc.h"
 #include "sun4i_drv.h"
@@ -109,7 +110,7 @@ static void sun4i_remove_framebuffers(void)
         ap->ranges[0].base = 0;
         ap->ranges[0].size = ~0;
 
-        remove_conflicting_framebuffers(ap, "sun4i-drm-fb", false);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "sun4i-drm-fb", false);
         kfree(ap);
 }
 
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 8b42d31a7f0e..deec53545bea 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include "drm_fb_cma_helper.h"
+#include <drm/drm_fb_helper.h>
 
 #include "uapi/drm/vc4_drm.h"
 #include "vc4_drv.h"
@@ -214,7 +215,7 @@ static void vc4_kick_out_firmware_fb(void)
         ap->ranges[0].base = 0;
         ap->ranges[0].size = ~0;
 
-        remove_conflicting_framebuffers(ap, "vc4drmfb", false);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "vc4drmfb", false);
         kfree(ap);
 }
 
diff --git a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
index 7f0e93f87a55..a59d0e309bfc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drm_bus.c
@@ -24,6 +24,7 @@
  */
 
 #include <linux/pci.h>
+#include <drm/drm_fb_helper.h>
 
 #include "virtgpu_drv.h"
 
@@ -42,7 +43,7 @@ static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev)
         primary = pci_dev->resource[PCI_ROM_RESOURCE].flags
                 & IORESOURCE_ROM_SHADOW;
 
-        remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);
+        drm_fb_helper_remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);
 
         kfree(ap);
 }
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index db8d4780eaa2..130c324f1aee 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -32,6 +32,7 @@
 
 struct drm_fb_helper;
 
+#include <drm/drm_crtc.h>
 #include <linux/kgdb.h>
 
 enum mode_set_atomic {
@@ -282,6 +283,12 @@ drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
 int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector);
 int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
                                        struct drm_connector *connector);
+static inline int
+drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
+                                              const char *name, bool primary)
+{
+        return remove_conflicting_framebuffers(a, name, primary);
+}
 #else
 static inline int drm_fb_helper_modinit(void)
 {
@@ -475,5 +482,12 @@ drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
 {
         return 0;
 }
+
+static inline int
+drm_fb_helper_remove_conflicting_framebuffers(struct apertures_struct *a,
+                                              const char *name, bool primary)
+{
+        return 0;
+}
 #endif
 #endif