diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0330-drm-v3d-Suppress-all-but-the-first-MMU-error.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0330-drm-v3d-Suppress-all-but-the-first-MMU-error.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0330-drm-v3d-Suppress-all-but-the-first-MMU-error.patch b/target/linux/bcm27xx/patches-5.4/950-0330-drm-v3d-Suppress-all-but-the-first-MMU-error.patch new file mode 100644 index 0000000000..58f3a44aff --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0330-drm-v3d-Suppress-all-but-the-first-MMU-error.patch @@ -0,0 +1,39 @@ +From f1f228c84864bad0bb07de1c72ceafaec035ac15 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Mon, 11 Nov 2019 20:18:08 +0000 +Subject: [PATCH] drm/v3d: Suppress all but the first MMU error + +The v3d driver currently encounters a lot of MMU PTE exceptions, so +only log the first to avoid swamping the kernel log. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + drivers/gpu/drm/v3d/v3d_irq.c | 3 +++ + 1 file changed, 3 insertions(+) + +--- a/drivers/gpu/drm/v3d/v3d_irq.c ++++ b/drivers/gpu/drm/v3d/v3d_irq.c +@@ -177,6 +177,7 @@ v3d_hub_irq(int irq, void *arg) + "GMP", + }; + const char *client = "?"; ++ static int logged_error; + + V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL)); + +@@ -186,6 +187,7 @@ v3d_hub_irq(int irq, void *arg) + client = v3d41_axi_ids[axi_id]; + } + ++ if (!logged_error) + dev_err(v3d->dev, "MMU error from client %s (%d) at 0x%llx%s%s%s\n", + client, axi_id, (long long)vio_addr, + ((intsts & V3D_HUB_INT_MMU_WRV) ? +@@ -194,6 +196,7 @@ v3d_hub_irq(int irq, void *arg) + ", pte invalid" : ""), + ((intsts & V3D_HUB_INT_MMU_CAP) ? + ", cap exceeded" : "")); ++ logged_error = 1; + status = IRQ_HANDLED; + } + |