ARM: SAMSUNG: Fix bug in clksrc-clk round_rate call.

The call has been assuming all clksrc-clks' divider size is 4 bits, but
this may not be the case anymore. Use the reg_div.size parameter to
calculate the maximum value it can take and check against that.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/arm/plat-samsung/clock-clksrc.c b/arch/arm/plat-samsung/clock-clksrc.c
index 656c70e0400a..ae8b8507663f 100644
--- a/arch/arm/plat-samsung/clock-clksrc.c
+++ b/arch/arm/plat-samsung/clock-clksrc.c
@@ -60,7 +60,7 @@ static int s3c_setrate_clksrc(struct clk *clk, unsigned long rate)
 
         rate = clk_round_rate(clk, rate);
         div = clk_get_rate(clk->parent) / rate;
-        if (div > 16)
+        if (div > (1 << sclk->reg_div.size))
                 return -EINVAL;
 
         val = __raw_readl(reg);
@@ -102,7 +102,9 @@ static int s3c_setparent_clksrc(struct clk *clk, struct clk *parent)
 static unsigned long s3c_roundrate_clksrc(struct clk *clk,
                                               unsigned long rate)
 {
+        struct clksrc_clk *sclk = to_clksrc(clk);
         unsigned long parent_rate = clk_get_rate(clk->parent);
+        int max_div = 1 << sclk->reg_div.size;
         int div;
 
         if (rate >= parent_rate)
@@ -114,8 +116,8 @@ static unsigned long s3c_roundrate_clksrc(struct clk *clk,
 
                 if (div == 0)
                         div = 1;
-                if (div > 16)
-                        div = 16;
+                if (div > max_div)
+                        div = max_div;
 
                 rate = parent_rate / div;
         }