From: Neil Armstrong <narmstrong@baylibre.com>
Date: Tue, 17 Apr 2018 09:30:31 +0000 (+0200)
Subject: clk: fix clk_get_bulk when phandle error
X-Git-Tag: v2018.05-rc3~54
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=721881c4178dc5ca1f201c9d9f8e86d32499666f;p=oweals%2Fu-boot.git

clk: fix clk_get_bulk when phandle error

This fixes the Coverity Defect CID 175347 when dev_count_phandle_with_args()
returns a negative value.

Fixes: a855be87da49 ("clk: Add get/enable/disable/release for a bulk of clocks")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 6e99b3b15d..53f418bfdd 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -111,8 +111,8 @@ int clk_get_bulk(struct udevice *dev, struct clk_bulk *bulk)
 	bulk->count = 0;
 
 	count = dev_count_phandle_with_args(dev, "clocks", "#clock-cells");
-	if (!count)
-		return 0;
+	if (count < 1)
+		return count;
 
 	bulk->clks = devm_kcalloc(dev, count, sizeof(struct clk), GFP_KERNEL);
 	if (!bulk->clks)