net: Avoid extra wakeups of threads blocked in wait_for_packet()

[safe/jmp/linux-2.6] / include / linux / clk.h

diff --git a/include/linux/clk.h b/include/linux/clk.h
index 12848f8..1db9bbf 100644 (file)
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -8,8 +8,8 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#ifndef ASMARM_CLOCK_H
-#define ASMARM_CLOCK_H
+#ifndef __LINUX_CLK_H
+#define __LINUX_CLK_H
 
 struct device;
 
@@ -35,6 +35,8 @@ struct clk;
  * clk_get may return different clock producers depending on @dev.)
  *
  * Drivers must assume that the clock source is not enabled.
+ *
+ * clk_get should not be called from within interrupt context.
  */
 struct clk *clk_get(struct device *dev, const char *id);
 
@@ -76,6 +78,8 @@ unsigned long clk_get_rate(struct clk *clk);
  * Note: drivers must ensure that all clk_enable calls made on this
  * clock source are balanced by clk_disable calls prior to calling
  * this function.
+ *
+ * clk_put should not be called from within interrupt context.
  */
 void clk_put(struct clk *clk);
 
@@ -121,4 +125,21 @@ int clk_set_parent(struct clk *clk, struct clk *parent);
  */
 struct clk *clk_get_parent(struct clk *clk);
 
+/**
+ * clk_get_sys - get a clock based upon the device name
+ * @dev_id: device name
+ * @con_id: connection ID
+ *
+ * Returns a struct clk corresponding to the clock producer, or
+ * valid IS_ERR() condition containing errno.  The implementation
+ * uses @dev_id and @con_id to determine the clock consumer, and
+ * thereby the clock producer. In contrast to clk_get() this function
+ * takes the device name instead of the device itself for identification.
+ *
+ * Drivers must assume that the clock source is not enabled.
+ *
+ * clk_get_sys should not be called from within interrupt context.
+ */
+struct clk *clk_get_sys(const char *dev_id, const char *con_id);
+
 #endif