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remoteproc: k3-dsp: Add devm action to release reserved memory

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Use a device lifecycle managed action to release reserved memory. This
helps prevent mistakes like releasing out of order in cleanup functions
and forgetting to release on error paths.

Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123184913.725435-2-afd@ti.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Andrew Davis 2024-01-23 12:49:07 -06:00 committed by Mathieu Poirier
parent 64e17ec250
commit 961a919a6d
1 changed files with 12 additions and 8 deletions
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20
drivers/remoteproc/ti_k3_dsp_remoteproc.c
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@ -550,6 +550,13 @@ static int k3_dsp_rproc_of_get_memories(struct platform_device *pdev,
return 0;
}
static void k3_dsp_mem_release(void *data)
{
struct device *dev = data;
of_reserved_mem_device_release(dev);
}
static int k3_dsp_reserved_mem_init(struct k3_dsp_rproc *kproc)
{
struct device *dev = kproc->dev;
@ -579,13 +586,14 @@ static int k3_dsp_reserved_mem_init(struct k3_dsp_rproc *kproc)
ERR_PTR(ret));
return ret;
}
ret = devm_add_action_or_reset(dev, k3_dsp_mem_release, dev);
if (ret)
return ret;
num_rmems--;
kproc->rmem = kcalloc(num_rmems, sizeof(*kproc->rmem), GFP_KERNEL);
if (!kproc->rmem) {
ret = -ENOMEM;
goto release_rmem;
}
if (!kproc->rmem)
return -ENOMEM;
/* use remaining reserved memory regions for static carveouts */
for (i = 0; i < num_rmems; i++) {
@ -628,8 +636,6 @@ unmap_rmem:
for (i--; i >= 0; i--)
iounmap(kproc->rmem[i].cpu_addr);
kfree(kproc->rmem);
release_rmem:
of_reserved_mem_device_release(kproc->dev);
return ret;
}
@ -640,8 +646,6 @@ static void k3_dsp_reserved_mem_exit(struct k3_dsp_rproc *kproc)
for (i = 0; i < kproc->num_rmems; i++)
iounmap(kproc->rmem[i].cpu_addr);
kfree(kproc->rmem);
of_reserved_mem_device_release(kproc->dev);
}
static