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path: root/drivers/usb/misc/chaoskey.c
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Diffstat (limited to 'drivers/usb/misc/chaoskey.c')
-rw-r--r--drivers/usb/misc/chaoskey.c29
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
index cf5828ce927a..87067c3d6109 100644
--- a/drivers/usb/misc/chaoskey.c
+++ b/drivers/usb/misc/chaoskey.c
@@ -98,6 +98,7 @@ static void chaoskey_free(struct chaoskey *dev)
usb_free_urb(dev->urb);
kfree(dev->name);
kfree(dev->buf);
+ usb_put_intf(dev->interface);
kfree(dev);
}
}
@@ -145,6 +146,8 @@ static int chaoskey_probe(struct usb_interface *interface,
if (dev == NULL)
goto out;
+ dev->interface = usb_get_intf(interface);
+
dev->buf = kmalloc(size, GFP_KERNEL);
if (dev->buf == NULL)
@@ -174,8 +177,6 @@ static int chaoskey_probe(struct usb_interface *interface,
goto out;
}
- dev->interface = interface;
-
dev->in_ep = in_ep;
if (le16_to_cpu(udev->descriptor.idVendor) != ALEA_VENDOR_ID)
@@ -383,13 +384,17 @@ static int _chaoskey_fill(struct chaoskey *dev)
!dev->reading,
(started ? NAK_TIMEOUT : ALEA_FIRST_TIMEOUT) );
- if (result < 0)
+ if (result < 0) {
+ usb_kill_urb(dev->urb);
goto out;
+ }
- if (result == 0)
+ if (result == 0) {
result = -ETIMEDOUT;
- else
+ usb_kill_urb(dev->urb);
+ } else {
result = dev->valid;
+ }
out:
/* Let the device go back to sleep eventually */
usb_autopm_put_interface(dev->interface);
@@ -525,7 +530,21 @@ static int chaoskey_suspend(struct usb_interface *interface,
static int chaoskey_resume(struct usb_interface *interface)
{
+ struct chaoskey *dev;
+ struct usb_device *udev = interface_to_usbdev(interface);
+
usb_dbg(interface, "resume");
+ dev = usb_get_intfdata(interface);
+
+ /*
+ * We may have lost power.
+ * In that case the device that needs a long time
+ * for the first requests needs an extended timeout
+ * again
+ */
+ if (le16_to_cpu(udev->descriptor.idVendor) == ALEA_VENDOR_ID)
+ dev->reads_started = false;
+
return 0;
}
#else