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Subject[PATCH v2] drm/hisilicon: Fixed pcie resource conflict between drm and firmware
Date
use the drm_fb_helper_remove_conflicting_pci_framebuffer to remove
the framebuffer initialized by fireware/bootloader to avoid resource
conflict.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>

---
v2: use the general API to remove the conflict resource instead of rolling
our own.
---
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 4a8a4cf..7518980 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -327,6 +327,11 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
struct drm_device *dev;
int ret;

+ ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev,
+ "hibmcdrmfb");
+ if (ret)
+ return ret;
+
dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
if (IS_ERR(dev)) {
DRM_ERROR("failed to allocate drm_device\n");
--
2.7.4
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