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authorJames Morris <jmorris@macbook.(none)>2009-12-03 12:03:40 +0530
committerJames Morris <jmorris@macbook.(none)>2009-12-03 12:03:40 +0530
commitc84d6efd363a3948eb32ec40d46bab6338580454 (patch)
tree3ba7ac46e6626fe8ac843834588609eb6ccee5c6 /include/linux/input.h
parent7539cf4b92be4aecc573ea962135f246a7a33401 (diff)
parent22763c5cf3690a681551162c15d34d935308c8d7 (diff)
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Merge branch 'master' into next
Diffstat (limited to 'include/linux/input.h')
-rw-r--r--include/linux/input.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/input.h b/include/linux/input.h
index 0ccfc30cd40..c2b1a7d244d 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1377,6 +1377,10 @@ extern struct class input_class;
* methods; erase() is optional. set_gain() and set_autocenter() need
* only be implemented if driver sets up FF_GAIN and FF_AUTOCENTER
* bits.
+ *
+ * Note that playback(), set_gain() and set_autocenter() are called with
+ * dev->event_lock spinlock held and interrupts off and thus may not
+ * sleep.
*/
struct ff_device {
int (*upload)(struct input_dev *dev, struct ff_effect *effect,