mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
8299d1f057
Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted patches, wireless patches and defconfig patches. bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 4B v1.1 4G bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
35 lines
1.3 KiB
Diff
35 lines
1.3 KiB
Diff
From 7372f1f8c151f752aa533eaf2b85ad9b21ec9639 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Mon, 11 Nov 2019 14:01:41 +0000
|
|
Subject: [PATCH] drm/v3d: Don't clear MMU control bits on exception
|
|
|
|
MMU exception conditions are reported in the V3D_MMU_CTRL register as
|
|
write-1-to-clear (W1C) bits. The MMU interrupt handling code clears any
|
|
exceptions, but does so by masking out any other bits and writing the
|
|
result back. There are some important control bits in that register,
|
|
including MMU_ENABLE, so a safer approach is to simply write back the
|
|
value just read unaltered.
|
|
|
|
This patch doesn't remove the cause of the apparent PTE errors, but it
|
|
does reduce the impact to just an error in the kernel log.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/gpu/drm/v3d/v3d_irq.c | 5 +----
|
|
1 file changed, 1 insertion(+), 4 deletions(-)
|
|
|
|
--- a/drivers/gpu/drm/v3d/v3d_irq.c
|
|
+++ b/drivers/gpu/drm/v3d/v3d_irq.c
|
|
@@ -178,10 +178,7 @@ v3d_hub_irq(int irq, void *arg)
|
|
};
|
|
const char *client = "?";
|
|
|
|
- V3D_WRITE(V3D_MMU_CTL,
|
|
- V3D_READ(V3D_MMU_CTL) & (V3D_MMU_CTL_CAP_EXCEEDED |
|
|
- V3D_MMU_CTL_PT_INVALID |
|
|
- V3D_MMU_CTL_WRITE_VIOLATION));
|
|
+ V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL));
|
|
|
|
if (v3d->ver >= 41) {
|
|
axi_id = axi_id >> 5;
|