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authorJ. Bruce Fields <bfields@citi.umich.edu>2009-11-23 12:34:58 -0500
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-11-23 12:34:58 -0500
commit9b8b317d58084b9a44f6f33b355c4278d9f841fb (patch)
treee0df89800bf4301c4017db3cdf04a2056ec1a852 /include/linux/input.h
parent78c210efdefe07131f91ed512a3308b15bb14e2f (diff)
parent648f4e3e50c4793d9dbf9a09afa193631f76fa26 (diff)
Merge commit 'v2.6.32-rc8' into HEAD
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,