linux-kernel - [PATCH] clk: <linux/clk.h>: correct clk_get

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Message-Id: <20210427031342.5333-1-rdunlap@infradead.org>
Date:   Mon, 26 Apr 2021 20:13:42 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Russell King <linux@...linux.org.uk>, linux-clk@...r.kernel.org
Subject: [PATCH] clk: <linux/clk.h>: correct clk_get_parent() documentation

Make the kernel-doc return value agree with both the stub implementation
in <linux/clk.h> and the non-stub function in drivers/clk/clk.c.

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Russell King <linux@...linux.org.uk>
Cc: linux-clk@...r.kernel.org
---
There are several drivers that call clk_get_parent() and use its
return value as though it returns an ERR_PTR(). I am working on a
patch series to fix those.

 include/linux/clk.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-next-20210426.orig/include/linux/clk.h
+++ linux-next-20210426/include/linux/clk.h
@@ -744,8 +744,8 @@ int clk_set_parent(struct clk *clk, stru
  * clk_get_parent - get the parent clock source for this clock
  * @clk: clock source
  *
- * Returns struct clk corresponding to parent clock source, or
- * valid IS_ERR() condition containing errno.
+ * Return: &struct clk corresponding to parent clock source, or
+ * %NULL if clk is %NULL.
  */
 struct clk *clk_get_parent(struct clk *clk);