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drm/v3d: Suppress all but the first MMU error

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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>
This commit is contained in:
Phil Elwell
2019-11-11 20:18:08 +00:00
committed by Dom Cobley
parent e64b6b387d
commit f22317f82b
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/v3d/v3d_irq.c
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@@ -211,6 +211,7 @@ v3d_hub_irq(int irq, void *arg)
{0x7F, 0x80, "GMP"}, {0x7F, 0x80, "GMP"},
}; };
const char *client = "?"; const char *client = "?";
static int logged_error;
V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL)); V3D_WRITE(V3D_MMU_CTL, V3D_READ(V3D_MMU_CTL));
@@ -238,6 +239,7 @@ v3d_hub_irq(int irq, void *arg)
} }
} }
if (!logged_error)
dev_err(v3d->drm.dev, "MMU error from client %s (0x%x) at 0x%llx%s%s%s\n", dev_err(v3d->drm.dev, "MMU error from client %s (0x%x) at 0x%llx%s%s%s\n",
client, axi_id, (long long)vio_addr, client, axi_id, (long long)vio_addr,
((intsts & V3D_HUB_INT_MMU_WRV) ? ((intsts & V3D_HUB_INT_MMU_WRV) ?
@@ -246,6 +248,7 @@ v3d_hub_irq(int irq, void *arg)
", pte invalid" : ""), ", pte invalid" : ""),
((intsts & V3D_HUB_INT_MMU_CAP) ? ((intsts & V3D_HUB_INT_MMU_CAP) ?
", cap exceeded" : "")); ", cap exceeded" : ""));
logged_error = 1;
status = IRQ_HANDLED; status = IRQ_HANDLED;
} }