[PATCH] nouveau: gt215: Fix clock freq. calculation

[Pranith Kumar <bobby.prani@gmail.com>]

In commit 6a4a47cfd181 ("drm/nva3/clk: Set PLL refclk") diff was changed from
int to u32 because of which a later branch which was testing if (diff < 0)
became always false. Fix this by using int type for diff.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
CC: stable@vger.kernel.org
CC: Roy Spliet <rspliet@eclipso.eu>
CC: Ben Skeggs <bskeggs@redhat.com>
---
 drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c
index 822d32a..db37db3 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gt215.c
@@ -180,7 +180,8 @@ gt215_clk_info(struct nvkm_clk *clock, int clk, u32 khz,
 	       struct gt215_clk_info *info)
 {
 	struct gt215_clk_priv *priv = (void *)clock;
-	u32 oclk, sclk, sdiv, diff;
+	u32 oclk, sclk, sdiv;
+	int diff;
 
 	info->clk = 0;
 
-- 
1.9.1