From: Keith Busch <kbusch@xxxxxxxxxx>
[ Upstream commit b9ecbfa45516182cd062fecd286db7907ba84210 ]
Drivers must call nvme_uninit_ctrl after a successful nvme_init_ctrl.
Split the allocation side out to make the error handling boundary easier
to navigate. The apple driver had been doing this wrong, leaking the
controller device memory on a tagset failure.
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/nvme/host/apple.c | 27 ++++++++++++++++++++++-----
1 file changed, 22 insertions(+), 5 deletions(-)
diff --git a/drivers/nvme/host/apple.c b/drivers/nvme/host/apple.c
index 0cfa39361d3b6..25ecc1a005c5a 100644
--- a/drivers/nvme/host/apple.c
+++ b/drivers/nvme/host/apple.c
@@ -1388,7 +1388,7 @@ static void devm_apple_nvme_mempool_destroy(void *data)
mempool_destroy(data);
}
-static int apple_nvme_probe(struct platform_device *pdev)
+static struct apple_nvme *apple_nvme_alloc(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct apple_nvme *anv;
@@ -1396,7 +1396,7 @@ static int apple_nvme_probe(struct platform_device *pdev)
anv = devm_kzalloc(dev, sizeof(*anv), GFP_KERNEL);
if (!anv)
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
anv->dev = get_device(dev);
anv->adminq.is_adminq = true;
@@ -1516,10 +1516,26 @@ static int apple_nvme_probe(struct platform_device *pdev)
goto put_dev;
}
+ return anv;
+put_dev:
+ put_device(anv->dev);
+ return ERR_PTR(ret);
+}
+
+static int apple_nvme_probe(struct platform_device *pdev)
+{
+ struct apple_nvme *anv;
+ int ret;
+
+ anv = apple_nvme_alloc(pdev);
+ if (IS_ERR(anv))
+ return PTR_ERR(anv);
+
anv->ctrl.admin_q = blk_mq_alloc_queue(&anv->admin_tagset, NULL, NULL);
if (IS_ERR(anv->ctrl.admin_q)) {
ret = -ENOMEM;
- goto put_dev;
+ anv->ctrl.admin_q = NULL;
+ goto out_uninit_ctrl;
}
nvme_reset_ctrl(&anv->ctrl);
@@ -1527,8 +1543,9 @@ static int apple_nvme_probe(struct platform_device *pdev)
return 0;
-put_dev:
- put_device(anv->dev);
+out_uninit_ctrl:
+ nvme_uninit_ctrl(&anv->ctrl);
+ nvme_put_ctrl(&anv->ctrl);
return ret;
}
--
2.43.0
