[PATCH 3/3] drm/etnaviv: Print an error message if inserting IOVA range fails

From: Sui Jingfeng
Date: Fri Oct 04 2024 - 16:24:43 EST


Print an error message to help debug when such an issue happen, since it's
not so obvious.

Signed-off-by: Sui Jingfeng <sui.jingfeng@xxxxxxxxx>
---
v0 -> v1: Use dev_err_ratelimited() to prevent spamming the logs

v0 is at https://lore.kernel.org/dri-devel/20240930221706.399139-1-sui.jingfeng@xxxxxxxxx/
---
drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index a52ec5eb0e3d..37866ed05c13 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -300,8 +300,12 @@ int etnaviv_iommu_map_gem(struct etnaviv_iommu_context *context,
ret = etnaviv_iommu_insert_exact(context, node, user_size, va);
else
ret = etnaviv_iommu_find_iova(context, node, user_size);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err_ratelimited(context->global->dev,
+ "Insert iova failed: 0x%llx(0x%x)\n",
+ va, user_size);
goto unlock;
+ }

mapping->iova = node->start;
ret = etnaviv_iommu_map(context, node->start, user_size, sgt,
--
2.34.1