diff mbox series

[v6,5/6] MIPS: Loongson 2F: Add clk_get_optional() function

Message ID 20181116145937.27660-6-phil.edworthy@renesas.com (mailing list archive)
State Awaiting Upstream
Delegated to: Geert Uytterhoeven
Headers show
Series clk: Add functions to get optional clocks | expand

Commit Message

Phil Edworthy Nov. 16, 2018, 2:59 p.m. UTC 
clk_get_optional() returns NULL if not found instead of -ENOENT,
otherwise the behaviour is the same as clk_get().

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
---
 arch/mips/loongson64/lemote-2f/clock.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/arch/mips/loongson64/lemote-2f/clock.c b/arch/mips/loongson64/lemote-2f/clock.c
index 8281334df9c8..abbade58b635 100644
--- a/arch/mips/loongson64/lemote-2f/clock.c
+++ b/arch/mips/loongson64/lemote-2f/clock.c
@@ -53,6 +53,17 @@  struct clk *clk_get(struct device *dev, const char *id)
 }
 EXPORT_SYMBOL(clk_get);
 
+struct clk *clk_get_optional(struct device *dev, const char *id)
+{
+	struct clk *clk = clk_get(dev, id);
+
+	if (clk == ERR_PTR(-ENOENT))
+		clk = NULL;
+
+	return clk;
+}
+EXPORT_SYMBOL(clk_get_optional);
+
 static void propagate_rate(struct clk *clk)
 {
 	struct clk *clkp;