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openmptcprouter/6.1/target/linux/bcm27xx/patches-6.1/950-0854-bcm2708_fb-Hack-out-dma-support.patch
2023-10-09 18:43:46 +02:00

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From d60956f30586ced37e2152f2ba338f547e6c64f7 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Thu, 24 Sep 2020 20:13:08 +0100
Subject: [PATCH 0854/1016] bcm2708_fb: Hack out dma support
---
drivers/video/fbdev/bcm2708_fb.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/video/fbdev/bcm2708_fb.c b/drivers/video/fbdev/bcm2708_fb.c
index 365c5b96b8a0..39ab8d5ce552 100644
--- a/drivers/video/fbdev/bcm2708_fb.c
+++ b/drivers/video/fbdev/bcm2708_fb.c
@@ -657,6 +657,8 @@ static long vc_mem_copy(struct bcm2708_fb *fb, struct fb_dmacopy *ioparam)
long rc = 0;
size_t offset;
+return -EFAULT;
+
/* restrict this to root user */
if (!uid_eq(current_euid(), GLOBAL_ROOT_UID)) {
rc = -EFAULT;
@@ -1109,6 +1111,7 @@ static int bcm2708_fb_probe(struct platform_device *dev)
dev_info(&dev->dev, "FB found %d display(s)\n", num_displays);
+#if 0
/* Set up the DMA information. Note we have just one set of DMA
* parameters to work with all the FB's so requires synchronising when
* being used
@@ -1141,7 +1144,7 @@ static int bcm2708_fb_probe(struct platform_device *dev)
"Failed to request DMA irq\n");
goto free_dma_chan;
}
-
+#endif
rpi_firmware_property(fbdev->fw,
RPI_FIRMWARE_GET_VC_MEMORY,
&gpu_mem, sizeof(gpu_mem));
--
2.42.0