On 21.08.24 07:30, Beleswar Prasad Padhi wrote:
On 19-08-2024 20:54, Jan Kiszka wrote:This is just be the tip of the iceberg. The whole code needs to be
From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
By simply bailing out, the driver was violating its rule and internal
Using device lifecycle managed functions to register the rproc
(devm_rproc_add()), bailing out with an error code will work.
assumptions that either both or no rproc should be initialized. E.g.,
this could cause the first core to be available but not the second one,
leading to crashes on its shutdown later on while trying to dereference
that second instance.
Fixes: 61f6f68447ab ("remoteproc: k3-r5: Wait for core0 power-up
before powering up core1")
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
drivers/remoteproc/ti_k3_r5_remoteproc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c
b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 39a47540c590..eb09d2e9b32a 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -1332,7 +1332,7 @@ static int k3_r5_cluster_rproc_init(struct
platform_device *pdev)
dev_err(dev,
"Timed out waiting for %s core to power up!\n",
rproc->name);
- return ret;
+ goto err_powerup;
}
}
@@ -1348,6 +1348,7 @@ static int k3_r5_cluster_rproc_init(struct
platform_device *pdev)
}
}
+err_powerup:
rproc_del(rproc);
Please use devm_rproc_add() to avoid having to do rproc_del() manually
here.
reworked accordingly so that we can drop these goto, not just this one.
Just look at k3_r5_reserved_mem_init. Your change in [1] was also too
early in this regard, breaking current error handling additionally.
I'll stop my whac-a-mole. Someone needs to sit down and do that for the
complete code consistently. And test the error cases.
Jan
[1]
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f3f11cfe890733373ddbb1ce8991ccd4ee5e79e1
err_add:
k3_r5_reserved_mem_exit(kproc);