Commit ff7c79e4 authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
Browse files

[PATCH] USB: usbtest updates 



Updates to "usbtest" driver:

  * Improve some diagnostics.  One path that never generated diagnostics
    before should now generate two ... unless you hit a GCC bug that
    all my compilers seem to have, go figure.

  * Add suspend/resume support, so this behaves when the Linux host
    being used for testing suspends.

  * Don't test the "zero byte ep0 read" case unless real-world relevance
    for the testing is is irrelevant.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 884b600f

drivers/usb/misc/usbtest.c

+52 −8
Original line number Diff line number Diff line
@@ -461,7 +461,7 @@ static int perform_sglist ( 


static unsigned realworld = 1;

module_param (realworld, uint, 0);

MODULE_PARM_DESC (realworld, "clear to demand stricter ch9 compliance");

MODULE_PARM_DESC (realworld, "clear to demand stricter spec compliance");



static int get_altsetting (struct usbtest_dev *dev)

{
@@ -604,9 +604,8 @@ static int ch9_postconfig (struct usbtest_dev *dev) 
				USB_DIR_IN | USB_RECIP_DEVICE,

				0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);

		if (retval != 1 || dev->buf [0] != expected) {

			dev_dbg (&iface->dev,

				"get config --> %d (%d)\n", retval,

				expected);

			dev_dbg (&iface->dev, "get config --> %d %d (1 %d)\n",

				retval, dev->buf[0], expected);

			return (retval < 0) ? retval : -EDOM;

		}

	}
@@ -1243,7 +1242,7 @@ static int ctrl_out (struct usbtest_dev *dev, 
	char			*what = "?";

	struct usb_device	*udev;

	

	if (length > 0xffff || vary >= length)

	if (length < 1 || length > 0xffff || vary >= length)

		return -EINVAL;



	buf = kmalloc(length, SLAB_KERNEL);
@@ -1266,6 +1265,11 @@ static int ctrl_out (struct usbtest_dev *dev, 
				0, 0, buf, len, USB_CTRL_SET_TIMEOUT);

		if (retval != len) {

			what = "write";

			if (retval >= 0) {

				INFO(dev, "ctrl_out, wlen %d (expected %d)\n",

						retval, len);

				retval = -EBADMSG;

			}

			break;

		}
@@ -1275,6 +1279,11 @@ static int ctrl_out (struct usbtest_dev *dev, 
				0, 0, buf, len, USB_CTRL_GET_TIMEOUT);

		if (retval != len) {

			what = "read";

			if (retval >= 0) {

				INFO(dev, "ctrl_out, rlen %d (expected %d)\n",

						retval, len);

				retval = -EBADMSG;

			}

			break;

		}
@@ -1293,8 +1302,13 @@ static int ctrl_out (struct usbtest_dev *dev, 
		}



		len += vary;



		/* [real world] the "zero bytes IN" case isn't really used.

		 * hardware can easily trip up in this wierd case, since its

		 * status stage is IN, not OUT like other ep0in transfers.

		 */

		if (len > length)

			len = 0;

			len = realworld ? 1 : 0;

	}



	if (retval < 0)
@@ -1519,6 +1533,11 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf) 
	if (down_interruptible (&dev->sem))

		return -ERESTARTSYS;



	if (intf->dev.power.power_state != PMSG_ON) {

		up (&dev->sem);

		return -EHOSTUNREACH;

	}



	/* some devices, like ez-usb default devices, need a non-default

	 * altsetting to have any active endpoints.  some tests change

	 * altsettings; force a default so most tests don't need to check.
@@ -1762,8 +1781,10 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf) 
	case 14:

		if (!dev->info->ctrl_out)

			break;

		dev_dbg (&intf->dev, "TEST 14:  %d ep0out, 0..%d vary %d\n",

				param->iterations, param->length, param->vary);

		dev_dbg (&intf->dev, "TEST 14:  %d ep0out, %d..%d vary %d\n",

				param->iterations,

				realworld ? 1 : 0, param->length,

				param->vary);

		retval = ctrl_out (dev, param->iterations, 

				param->length, param->vary);

		break;
@@ -1927,6 +1948,27 @@ usbtest_probe (struct usb_interface *intf, const struct usb_device_id *id) 
	return 0;

}



static int usbtest_suspend (struct usb_interface *intf, pm_message_t message)

{

	struct usbtest_dev	*dev = usb_get_intfdata (intf);



	down (&dev->sem);

	intf->dev.power.power_state = PMSG_SUSPEND;

	up (&dev->sem);

	return 0;

}



static int usbtest_resume (struct usb_interface *intf)

{

	struct usbtest_dev	*dev = usb_get_intfdata (intf);



	down (&dev->sem);

	intf->dev.power.power_state = PMSG_ON;

	up (&dev->sem);

	return 0;

}





static void usbtest_disconnect (struct usb_interface *intf)

{

	struct usbtest_dev	*dev = usb_get_intfdata (intf);
@@ -2115,6 +2157,8 @@ static struct usb_driver usbtest_driver = { 
	.probe =	usbtest_probe,

	.ioctl =	usbtest_ioctl,

	.disconnect =	usbtest_disconnect,

	.suspend =	usbtest_suspend,

	.resume =	usbtest_resume,

};



/*-------------------------------------------------------------------------*/

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