4.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hauke Mehrtens <[email protected]>

commit 4e7d30dba493b60a80e9b590add1b4402265cc83 upstream.

This adds a basic implementation of clk_round_rate()
The clk_round_rate() function is called by multiple drivers and
subsystems now and the lantiq clk driver is supposed to export this,
but doesn't do so, this causes linking problems like this one:
ERROR: "clk_round_rate" [drivers/media/v4l2-core/videodev.ko] undefined!

Signed-off-by: Hauke Mehrtens <[email protected]>
Acked-by: John Crispin <[email protected]>
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/11358/
Signed-off-by: Ralf Baechle <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 arch/mips/lantiq/clk.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

--- a/arch/mips/lantiq/clk.c
+++ b/arch/mips/lantiq/clk.c
@@ -99,6 +99,23 @@ int clk_set_rate(struct clk *clk, unsign
 }
 EXPORT_SYMBOL(clk_set_rate);
 
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+       if (unlikely(!clk_good(clk)))
+               return 0;
+       if (clk->rates && *clk->rates) {
+               unsigned long *r = clk->rates;
+
+               while (*r && (*r != rate))
+                       r++;
+               if (!*r) {
+                       return clk->rate;
+               }
+       }
+       return rate;
+}
+EXPORT_SYMBOL(clk_round_rate);
+
 int clk_enable(struct clk *clk)
 {
        if (unlikely(!clk_good(clk)))


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