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From e5d63db582ac8f702e6647c47e118c7e1b2412a3 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->drm.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;
}
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