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Input: cm109 - fix checking return value of usb_control_msg
author
axel lin
<axel.lin@gmail.com>
Thu, 25 Aug 2011 16:42:09 +0000
(09:42 -0700)
committer
Dmitry Torokhov
<dmitry.torokhov@gmail.com>
Sat, 27 Aug 2011 06:20:30 +0000
(23:20 -0700)
If successful, usb_control_msg returns the number of bytes transferred,
otherwise a negative error number.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
drivers/input/misc/cm109.c
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diff --git
a/drivers/input/misc/cm109.c
b/drivers/input/misc/cm109.c
index
b09c7d1
..
ab86051
100644
(file)
--- a/
drivers/input/misc/cm109.c
+++ b/
drivers/input/misc/cm109.c
@@
-475,7
+475,7
@@
static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on)
le16_to_cpu(dev->ctl_req->wIndex),
dev->ctl_data,
USB_PKT_LEN, USB_CTRL_SET_TIMEOUT);
- if (error
&& error !=
EINTR)
+ if (error
< 0 && error != -
EINTR)
err("%s: usb_control_msg() failed %d", __func__, error);
}