[PATCH] usb: don't spit out too much errors with suspended devices

[Colin Leroy <colin@colino.net>]

On 26 Oct 2004 at 09h10, David Brownell wrote:

Hi, 

> What's wrong there is emitting voluminous diagnostics for
> something that's not an error ... the root hub is suspended,
> and as with any suspended device, you can't talk to it.
> The descriptor read logic can skip retries in that case, and
> usbfs should refuse up front to talk to suspended devices.
> (Silently!)

Here's a patch that does it. Hope it's fine.

Signed-off-by: Colin Leroy <colin@colino.net>

--- a/drivers/usb/core/message.c	2004-10-27 09:09:34.332120419 +0200
+++ b/drivers/usb/core/message.c	2004-10-27 09:15:05.323320163 +0200
@@ -703,6 +705,8 @@
 	int err;
 	unsigned int u, idx;
 
+	if (dev->state == USB_STATE_SUSPENDED)
+		return -EHOSTUNREACH;
 	if (size <= 0 || !buf || !index)
 		return -EINVAL;
 	buf[0] = 0;
--- a/drivers/usb/core/devio.c	2004-10-27 09:08:45.401856241 +0200
+++ b/drivers/usb/core/devio.c	2004-10-27 09:16:09.079846340 +0200
@@ -541,6 +541,8 @@
 	unsigned char *tbuf;
 	int i, j, ret;
 
+	if (dev->state == USB_STATE_SUSPENDED)
+		return -EHOSTUNREACH;
 	if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
 		return -EFAULT;
 	if ((ret = check_ctrlrecip(ps, ctrl.bRequestType, ctrl.wIndex)))