linux-kernel - [PATCH] drm/stm: remove conflicting framebuffers

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Date:   Mon, 6 Dec 2021 14:47:35 +0100
From:   Yannick Fertre <yannick.fertre@...s.st.com>
To:     Yannick Fertre <yannick.fertre@...s.st.com>,
        Philippe Cornu <philippe.cornu@...s.st.com>,
        Raphael Gallais-Pou <raphael.gallais-pou@...s.st.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm/stm: remove conflicting framebuffers

In case of using simplefb or another conflicting framebuffer,
call drm_aperture_remove_framebuffers() to remove memory allocated.

Signed-off-by: Yannick Fertre <yannick.fertre@...s.st.com>
---
 drivers/gpu/drm/stm/drv.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 222869b232ae..9f441aadf2d5 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -14,6 +14,7 @@
 #include <linux/of_platform.h>
 #include <linux/pm_runtime.h>
 
+#include <drm/drm_aperture.h>
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_drv.h>
@@ -183,6 +184,10 @@ static int stm_drm_platform_probe(struct platform_device *pdev)
 
 	DRM_DEBUG("%s\n", __func__);
 
+	ret = drm_aperture_remove_framebuffers(false, &drv_driver);
+	if (ret)
+		return ret;
+
 	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
 
 	ddev = drm_dev_alloc(&drv_driver, dev);
-- 
2.17.1