[PATCH 4.18 076/123] soc: qcom: rmtfs-mem: fix memleak in probe error paths

From: Greg Kroah-Hartman
Date: Mon Sep 03 2018 - 13:39:09 EST


4.18-stable review patch. If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@xxxxxxxxxx>

commit 78ee559d7fc65e37670a46cfbeaaa62cb014af67 upstream.

Make sure to set the mem device release callback before calling
put_device() in a couple of probe error paths so that the containing
object also gets freed.

Fixes: d1de6d6c639b ("soc: qcom: Remote filesystem memory driver")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.15
Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Andy Gross <andy.gross@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/soc/qcom/rmtfs_mem.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/soc/qcom/rmtfs_mem.c
+++ b/drivers/soc/qcom/rmtfs_mem.c
@@ -184,6 +184,7 @@ static int qcom_rmtfs_mem_probe(struct p
device_initialize(&rmtfs_mem->dev);
rmtfs_mem->dev.parent = &pdev->dev;
rmtfs_mem->dev.groups = qcom_rmtfs_mem_groups;
+ rmtfs_mem->dev.release = qcom_rmtfs_mem_release_device;

rmtfs_mem->base = devm_memremap(&rmtfs_mem->dev, rmtfs_mem->addr,
rmtfs_mem->size, MEMREMAP_WC);
@@ -206,8 +207,6 @@ static int qcom_rmtfs_mem_probe(struct p
goto put_device;
}

- rmtfs_mem->dev.release = qcom_rmtfs_mem_release_device;
-
ret = of_property_read_u32(node, "qcom,vmid", &vmid);
if (ret < 0 && ret != -EINVAL) {
dev_err(&pdev->dev, "failed to parse qcom,vmid\n");