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authorTakashi Iwai <tiwai@suse.de>2009-12-04 16:22:32 +0100
committerTakashi Iwai <tiwai@suse.de>2009-12-04 16:22:32 +0100
commit79598324838a25cc378ecbb8c29dd1e3d3951d35 (patch)
tree7d29e81580cba854042df4e33bdc8f38bbd65d03 /include/linux/input.h
parent8ee763b9c82c6ca0a59a7271ce4fa29d7baf5c09 (diff)
parentb00615d163cd24fa98d155acfc1f9d81d6fe1103 (diff)
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Merge branch 'topic/core-change' into for-linus
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,