bcm27xx: remove linux 5.10 compatibility

[openwrt/staging/chunkeey.git] / target / linux / bcm27xx / patches-5.10 / 950-0167-drm-v3d-Don-t-clear-MMU-control-bits-on-exception.patch

diff --git a/target/linux/bcm27xx/patches-5.10/950-0167-drm-v3d-Don-t-clear-MMU-control-bits-on-exception.patch b/target/linux/bcm27xx/patches-5.10/950-0167-drm-v3d-Don-t-clear-MMU-control-bits-on-exception.patch
deleted file mode 100644 (file)
index 19bb220..0000000
--- a/target/linux/bcm27xx/patches-5.10/950-0167-drm-v3d-Don-t-clear-MMU-control-bits-on-exception.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-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;