Patch "clk: Fix undefined reference to `clk_rate_exclusive_{get,put}'" has been added to the 4.19-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    clk: Fix undefined reference to `clk_rate_exclusive_{get,put}'

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     clk-fix-undefined-reference-to-clk_rate_exclusive_-g.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 91042e4804f18dc6968419e2c68816ba210b6af8
Author: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Date:   Tue Jul 25 18:51:40 2023 +0100

    clk: Fix undefined reference to `clk_rate_exclusive_{get,put}'
    
    [ Upstream commit 2746f13f6f1df7999001d6595b16f789ecc28ad1 ]
    
    The COMMON_CLK config is not enabled in some of the architectures.
    This causes below build issues:
    
    pwm-rz-mtu3.c:(.text+0x114):
    undefined reference to `clk_rate_exclusive_put'
    pwm-rz-mtu3.c:(.text+0x32c):
    undefined reference to `clk_rate_exclusive_get'
    
    Fix these issues by moving clk_rate_exclusive_{get,put} inside COMMON_CLK
    code block, as clk.c is enabled by COMMON_CLK.
    
    Fixes: 55e9b8b7b806 ("clk: add clk_rate_exclusive api")
    Reported-by: kernel test robot <lkp@xxxxxxxxx>
    Closes: https://lore.kernel.org/all/202307251752.vLfmmhYm-lkp@xxxxxxxxx/
    Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230725175140.361479-1-biju.das.jz@xxxxxxxxxxxxxx
    Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/include/linux/clk.h b/include/linux/clk.h
index 4f750c481b82b..0a2382d3f68c8 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -175,6 +175,39 @@ int clk_get_scaled_duty_cycle(struct clk *clk, unsigned int scale);
  */
 bool clk_is_match(const struct clk *p, const struct clk *q);
 
+/**
+ * clk_rate_exclusive_get - get exclusivity over the rate control of a
+ *                          producer
+ * @clk: clock source
+ *
+ * This function allows drivers to get exclusive control over the rate of a
+ * provider. It prevents any other consumer to execute, even indirectly,
+ * opereation which could alter the rate of the provider or cause glitches
+ *
+ * If exlusivity is claimed more than once on clock, even by the same driver,
+ * the rate effectively gets locked as exclusivity can't be preempted.
+ *
+ * Must not be called from within atomic context.
+ *
+ * Returns success (0) or negative errno.
+ */
+int clk_rate_exclusive_get(struct clk *clk);
+
+/**
+ * clk_rate_exclusive_put - release exclusivity over the rate control of a
+ *                          producer
+ * @clk: clock source
+ *
+ * This function allows drivers to release the exclusivity it previously got
+ * from clk_rate_exclusive_get()
+ *
+ * The caller must balance the number of clk_rate_exclusive_get() and
+ * clk_rate_exclusive_put() calls.
+ *
+ * Must not be called from within atomic context.
+ */
+void clk_rate_exclusive_put(struct clk *clk);
+
 #else
 
 static inline int clk_notifier_register(struct clk *clk,
@@ -221,6 +254,13 @@ static inline bool clk_is_match(const struct clk *p, const struct clk *q)
 	return p == q;
 }
 
+static inline int clk_rate_exclusive_get(struct clk *clk)
+{
+	return 0;
+}
+
+static inline void clk_rate_exclusive_put(struct clk *clk) {}
+
 #endif
 
 /**
@@ -364,38 +404,6 @@ struct clk *devm_clk_get(struct device *dev, const char *id);
  */
 struct clk *devm_get_clk_from_child(struct device *dev,
 				    struct device_node *np, const char *con_id);
-/**
- * clk_rate_exclusive_get - get exclusivity over the rate control of a
- *                          producer
- * @clk: clock source
- *
- * This function allows drivers to get exclusive control over the rate of a
- * provider. It prevents any other consumer to execute, even indirectly,
- * opereation which could alter the rate of the provider or cause glitches
- *
- * If exlusivity is claimed more than once on clock, even by the same driver,
- * the rate effectively gets locked as exclusivity can't be preempted.
- *
- * Must not be called from within atomic context.
- *
- * Returns success (0) or negative errno.
- */
-int clk_rate_exclusive_get(struct clk *clk);
-
-/**
- * clk_rate_exclusive_put - release exclusivity over the rate control of a
- *                          producer
- * @clk: clock source
- *
- * This function allows drivers to release the exclusivity it previously got
- * from clk_rate_exclusive_get()
- *
- * The caller must balance the number of clk_rate_exclusive_get() and
- * clk_rate_exclusive_put() calls.
- *
- * Must not be called from within atomic context.
- */
-void clk_rate_exclusive_put(struct clk *clk);
 
 /**
  * clk_enable - inform the system when the clock source should be running.
@@ -665,14 +673,6 @@ static inline void clk_bulk_put(int num_clks, struct clk_bulk_data *clks) {}
 
 static inline void devm_clk_put(struct device *dev, struct clk *clk) {}
 
-
-static inline int clk_rate_exclusive_get(struct clk *clk)
-{
-	return 0;
-}
-
-static inline void clk_rate_exclusive_put(struct clk *clk) {}
-
 static inline int clk_enable(struct clk *clk)
 {
 	return 0;



[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux