From 45d16a6d94580cd3c6baed69b5fe441ece599fc4 Mon Sep 17 00:00:00 2001
From: Lucas Stach <l.stach@pengutronix.de>
Date: Mon, 25 Jan 2016 12:41:05 +0100
Subject: [PATCH] drm/etnaviv: fix memory leak in IOMMU init path
Plug in error handling to free any allocated ressources in the
IOMMU init path.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 7b511ad9f54b3..a33162cf4f4cc 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -596,10 +596,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
goto fail;
}
- /* TODO: we will leak here memory - fix it! */
-
gpu->mmu = etnaviv_iommu_new(gpu, iommu, version);
if (!gpu->mmu) {
+ iommu_domain_free(iommu);
ret = -ENOMEM;
goto fail;
}
@@ -609,7 +608,7 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
if (!gpu->buffer) {
ret = -ENOMEM;
dev_err(gpu->dev, "could not create command buffer\n");
- goto fail;
+ goto destroy_iommu;
}
if (gpu->buffer->paddr - gpu->memory_base > 0x80000000) {
ret = -EINVAL;
@@ -639,6 +638,9 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
free_buffer:
etnaviv_gpu_cmdbuf_free(gpu->buffer);
gpu->buffer = NULL;
+destroy_iommu:
+ etnaviv_iommu_destroy(gpu->mmu);
+ gpu->mmu = NULL;
fail:
pm_runtime_mark_last_busy(gpu->dev);
pm_runtime_put_autosuspend(gpu->dev);
--
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