[ARM] omap: fix omap2_divisor_to_clksel() error return value

The error checks for omap2_divisor_to_clksel() and comment disagree with
the actual value returned on error.  Fix this to return the correct error
value.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index ad721e0cbf7a1ded6c54ab2212efb4a5da1f281e..2899cba2aaa00103f606f5bb387a0df1782fab29 100644 (file)
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -565,7 +565,7 @@ u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val)
  *
  * Given a struct clk of a rate-selectable clksel clock, and a clock divisor,
  * find the corresponding register field value.  The return register value is
- * the value before left-shifting.  Returns 0xffffffff on error
+ * the value before left-shifting.  Returns ~0 on error
  */
 u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
 {
@@ -577,7 +577,7 @@ u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
 
        clks = omap2_get_clksel_by_parent(clk, clk->parent);
        if (clks == NULL)
-               return 0;
+               return ~0;
 
        for (clkr = clks->rates; clkr->div; clkr++) {
                if ((clkr->flags & cpu_mask) && (clkr->div == div))
@@ -588,7 +588,7 @@ u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
                printk(KERN_ERR "clock: Could not find divisor %d for "
                       "clock %s parent %s\n", div, clk->name,
                       clk->parent->name);
-               return 0;
+               return ~0;
        }
 
        return clkr->val;