openwrtv4/target/linux/ipq806x/patches-4.4/099-usb-dwc3-Remove-impossible-check-for-of_clk_get_pare.patch

From 07c8b15688055d81ac8e1c8c964b9e4c302287f1 Mon Sep 17 00:00:00 2001
From: Stephen Boyd <sboyd@codeaurora.org>
Date: Mon, 22 Feb 2016 11:12:47 -0800
Subject: [PATCH] usb: dwc3: Remove impossible check for
 of_clk_get_parent_count() < 0

The check for < 0 is impossible now that
of_clk_get_parent_count() returns an unsigned int. Simplify the
code and update the types.

Acked-by: Felipe Balbi <balbi@kernel.org>
Cc: <linux-usb@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
(cherry picked from commit 3d755dcc20dd452b52532eca17da40ebbd12aee9)

Change-Id: Iaa38e064d801fb36c855fea51c0443840368e0d3
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
---
 drivers/usb/dwc3/dwc3-of-simple.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -42,6 +42,7 @@ static int dwc3_of_simple_probe(struct p
 	struct device		*dev = &pdev->dev;
 	struct device_node	*np = dev->of_node;
 
+	unsigned int		count;
 	int			ret;
 	int			i;
 
@@ -49,11 +50,11 @@ static int dwc3_of_simple_probe(struct p
 	if (!simple)
 		return -ENOMEM;
 
-	ret = of_clk_get_parent_count(np);
-	if (ret < 0)
-		return ret;
+	count = of_clk_get_parent_count(np);
+	if (!count)
+		return -ENOENT;
 
-	simple->num_clocks = ret;
+	simple->num_clocks = count;
 
 	simple->clks = devm_kcalloc(dev, simple->num_clocks,
 			sizeof(struct clk *), GFP_KERNEL);