Le 09/11/2021 à 03:54, Jason Wang a écrit :
On Tue, Nov 9, 2021 at 3:32 AM Christophe JAILLET
<christophe.jaillet@xxxxxxxxxx> wrote:
Le 08/11/2021 à 06:55, Jason Wang a écrit :
On Mon, Nov 8, 2021 at 12:15 AM Christophe JAILLET
<christophe.jaillet@xxxxxxxxxx> wrote:
In the error handling path, a successful 'vp_legacy_probe()' should be
balanced by a corresponding 'vp_legacy_remove()' call, as already done in
the remove function.
Add the missing call and update gotos accordingly.
Fixes: e85087beedca ("eni_vdpa: add vDPA driver for Alibaba ENI")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/vdpa/alibaba/eni_vdpa.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/vdpa/alibaba/eni_vdpa.c b/drivers/vdpa/alibaba/eni_vdpa.c
index 3f788794571a..12b3db6b4517 100644
--- a/drivers/vdpa/alibaba/eni_vdpa.c
+++ b/drivers/vdpa/alibaba/eni_vdpa.c
@@ -501,7 +501,7 @@ static int eni_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (!eni_vdpa->vring) {
ret = -ENOMEM;
ENI_ERR(pdev, "failed to allocate virtqueues\n");
- goto err;
+ goto err_remove_vp_legacy;
}
for (i = 0; i < eni_vdpa->queues; i++) {
@@ -513,11 +513,13 @@ static int eni_vdpa_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ret = vdpa_register_device(&eni_vdpa->vdpa, eni_vdpa->queues);
if (ret) {
ENI_ERR(pdev, "failed to register to vdpa bus\n");
- goto err;
+ goto err_remove_vp_legacy;
}
return 0;
+err_remove_vp_legacy:
+ vp_legacy_remove(&eni_vdpa->ldev);
Won't vp_legacy_remove() be triggered by the put_devic() below?
Hi, I'm sorry but i don't see how.
My understanding is that:
- on "put_device(&eni_vdpa->vdpa.dev);", the corresponding release
function will be called.
- This release function is the one recorded in the
'__vdpa_alloc_device()' function.
- So it should be 'vdpa_release_dev()'.
- This function, AFAIU, has no knowledge of 'vp_legacy_remove()' or
anything that could call it.
Unless I misread something or miss something obvious, I don't see how
'vp_legacy_remove() would be called.
Could you elaborate?
I think the device should release the driver (see
device_release_driver()) during during its deleting.
Hi, I still don't follow the logic and I don't understand how
'vp_legacy_remove()' will finely be called, but it is not that important.
If it's fine for you, it's fine for me :)
CJ
Thanks
CJ
Thanks
err:
put_device(&eni_vdpa->vdpa.dev);
return ret;
--
2.30.2
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