On 3/25/2019 11:07 PM, Steven Price wrote:
of_parse_phandle_with_args() requires the caller to call of_node_put() on
the returned args->np pointer. Otherwise the reference count will remain
incremented.

However, in this case, since we don't actually use the returned pointer,
we can simply pass in NULL.

Fixes: aa4f886f3893f ("firmware: arm_scmi: add basic driver infrastructure for 
SCMI")
Signed-off-by: Steven Price <steven.pr...@arm.com>
---
  drivers/firmware/arm_scmi/driver.c | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/firmware/arm_scmi/driver.c 
b/drivers/firmware/arm_scmi/driver.c
index 8f952f2f1a29..dd967d675c08 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -654,9 +654,7 @@ static int scmi_xfer_info_init(struct scmi_info *sinfo)
static int scmi_mailbox_check(struct device_node *np)
  {
-       struct of_phandle_args arg;
-
-       return of_parse_phandle_with_args(np, "mboxes", "#mbox-cells", 0, &arg);
+       return of_parse_phandle_with_args(np, "mboxes", "#mbox-cells", 0, NULL);

Although, it is not used but it is better to put arg->np instead of passing NULL. Here, you are making the driver not to fill arguement which is customised solution, that may change in future.


Thanks.
Mukesh


  }
static int scmi_mbox_free_channel(int id, void *p, void *data)

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