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lantiq: add clk_round_rate()

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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 <hauke@hauke-m.de>

SVN-Revision: 47254
This commit is contained in:
Hauke Mehrtens 2015-10-25 22:46:46 +00:00
parent 4fd9028f44
commit ff64ae8293
1 changed files with 43 additions and 0 deletions
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43
target/linux/lantiq/patches-4.1/0050-MIPS-lantiq-add-clk_round_rate.patch Normal file
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@ -0,0 +1,43 @@
From b3c10c6c19a9a0ad2b967b6afc8d8302ff4e10f9 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sun, 25 Oct 2015 21:47:23 +0100
Subject: [PATCH] MIPS: lantiq: add clk_round_rate()
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 <hauke@hauke-m.de>
Cc: <stable@vger.kernel.org> # 4.1+
---
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)))