From: Arnd Bergmann <arnd@xxxxxxxx>
The two hyperv framebuffer drivers (hyperv_fb or hyperv_drm_drv) access the
global screen_info in order to take over from the sysfb framebuffer, which
in turn could be handled by simplefb, simpledrm or efifb. Similarly, the
vmbus_drv code marks the original EFI framebuffer as reserved, but this
is not required if there is no sysfb.
As a preparation for making screen_info itself more local to the sysfb
helper code, add a compile-time conditional in all three files that relate
to hyperv fb and just skip this code if there is no sysfb that needs to
be unregistered.
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 7 ++++---
drivers/hv/vmbus_drv.c | 6 ++++--
drivers/video/fbdev/hyperv_fb.c | 8 ++++----
3 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
index 8026118c6e033..9a44a00effc24 100644
--- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
+++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
@@ -73,9 +73,10 @@ static int hyperv_setup_vram(struct hyperv_drm_device *hv,
struct drm_device *dev = &hv->dev;
int ret;
- drm_aperture_remove_conflicting_framebuffers(screen_info.lfb_base,
- screen_info.lfb_size,
- &hyperv_driver);
+ if (IS_ENABLED(CONFIG_SYSFB))
+ drm_aperture_remove_conflicting_framebuffers(screen_info.lfb_base,
+ screen_info.lfb_size,
+ &hyperv_driver);
hv->fb_size = (unsigned long)hv->mmio_megabytes * 1024 * 1024;
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 67f95a29aeca5..5bc059e8a9f5f 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2100,8 +2100,10 @@ static void __maybe_unused vmbus_reserve_fb(void)
if (efi_enabled(EFI_BOOT)) {
/* Gen2 VM: get FB base from EFI framebuffer */
- start = screen_info.lfb_base;
- size = max_t(__u32, screen_info.lfb_size, 0x800000);
+ if (IS_ENABLED(CONFIG_SYSFB)) {
+ start = screen_info.lfb_base;
+ size = max_t(__u32, screen_info.lfb_size, 0x800000);
+ }
} else {
/* Gen1 VM: get FB base from PCI */
pdev = pci_get_device(PCI_VENDOR_ID_MICROSOFT,
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index b331452aab4fb..7e0d1c4235549 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -1030,7 +1030,7 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
goto getmem_done;
}
pr_info("Unable to allocate enough contiguous physical memory on Gen 1 VM. Using MMIO instead.\n");
- } else {
+ } else if (IS_ENABLED(CONFIG_SYSFB)) {
base = screen_info.lfb_base;
size = screen_info.lfb_size;
}
@@ -1076,13 +1076,13 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
getmem_done:
aperture_remove_conflicting_devices(base, size, KBUILD_MODNAME);
- if (gen2vm) {
+ if (!gen2vm) {
+ pci_dev_put(pdev);
+ } else if (IS_ENABLED(CONFIG_SYSFB)) {
/* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
screen_info.lfb_size = 0;
screen_info.lfb_base = 0;
screen_info.orig_video_isVGA = 0;
- } else {
- pci_dev_put(pdev);
}
return 0;
--
2.39.2
