[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: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -461,7 +461,7 @@ static int perform_sglist (
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static unsigned realworld = 1;
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module_param (realworld, uint, 0);
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MODULE_PARM_DESC (realworld, "clear to demand stricter ch9 compliance");
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MODULE_PARM_DESC (realworld, "clear to demand stricter spec compliance");
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static int get_altsetting (struct usbtest_dev *dev)
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{
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@ -604,9 +604,8 @@ static int ch9_postconfig (struct usbtest_dev *dev)
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USB_DIR_IN | USB_RECIP_DEVICE,
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0, 0, dev->buf, 1, USB_CTRL_GET_TIMEOUT);
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if (retval != 1 || dev->buf [0] != expected) {
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dev_dbg (&iface->dev,
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"get config --> %d (%d)\n", retval,
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expected);
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dev_dbg (&iface->dev, "get config --> %d %d (1 %d)\n",
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retval, dev->buf[0], expected);
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return (retval < 0) ? retval : -EDOM;
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}
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}
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@ -1243,7 +1242,7 @@ static int ctrl_out (struct usbtest_dev *dev,
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char *what = "?";
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struct usb_device *udev;
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if (length > 0xffff || vary >= length)
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if (length < 1 || length > 0xffff || vary >= length)
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return -EINVAL;
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buf = kmalloc(length, SLAB_KERNEL);
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@ -1266,6 +1265,11 @@ static int ctrl_out (struct usbtest_dev *dev,
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0, 0, buf, len, USB_CTRL_SET_TIMEOUT);
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if (retval != len) {
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what = "write";
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if (retval >= 0) {
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INFO(dev, "ctrl_out, wlen %d (expected %d)\n",
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retval, len);
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retval = -EBADMSG;
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}
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break;
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}
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@ -1275,6 +1279,11 @@ static int ctrl_out (struct usbtest_dev *dev,
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0, 0, buf, len, USB_CTRL_GET_TIMEOUT);
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if (retval != len) {
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what = "read";
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if (retval >= 0) {
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INFO(dev, "ctrl_out, rlen %d (expected %d)\n",
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retval, len);
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retval = -EBADMSG;
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}
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break;
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}
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@ -1293,8 +1302,13 @@ static int ctrl_out (struct usbtest_dev *dev,
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}
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len += vary;
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/* [real world] the "zero bytes IN" case isn't really used.
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* hardware can easily trip up in this wierd case, since its
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* status stage is IN, not OUT like other ep0in transfers.
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*/
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if (len > length)
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len = 0;
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len = realworld ? 1 : 0;
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}
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if (retval < 0)
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@ -1519,6 +1533,11 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf)
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if (down_interruptible (&dev->sem))
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return -ERESTARTSYS;
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if (intf->dev.power.power_state != PMSG_ON) {
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up (&dev->sem);
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return -EHOSTUNREACH;
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}
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/* some devices, like ez-usb default devices, need a non-default
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* altsetting to have any active endpoints. some tests change
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* altsettings; force a default so most tests don't need to check.
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@ -1762,8 +1781,10 @@ usbtest_ioctl (struct usb_interface *intf, unsigned int code, void *buf)
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case 14:
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if (!dev->info->ctrl_out)
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break;
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dev_dbg (&intf->dev, "TEST 14: %d ep0out, 0..%d vary %d\n",
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param->iterations, param->length, param->vary);
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dev_dbg (&intf->dev, "TEST 14: %d ep0out, %d..%d vary %d\n",
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param->iterations,
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realworld ? 1 : 0, param->length,
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param->vary);
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retval = ctrl_out (dev, param->iterations,
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param->length, param->vary);
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break;
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@ -1927,6 +1948,27 @@ usbtest_probe (struct usb_interface *intf, const struct usb_device_id *id)
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return 0;
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}
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static int usbtest_suspend (struct usb_interface *intf, pm_message_t message)
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{
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struct usbtest_dev *dev = usb_get_intfdata (intf);
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down (&dev->sem);
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intf->dev.power.power_state = PMSG_SUSPEND;
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up (&dev->sem);
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return 0;
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}
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static int usbtest_resume (struct usb_interface *intf)
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{
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struct usbtest_dev *dev = usb_get_intfdata (intf);
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down (&dev->sem);
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intf->dev.power.power_state = PMSG_ON;
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up (&dev->sem);
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return 0;
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}
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static void usbtest_disconnect (struct usb_interface *intf)
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{
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struct usbtest_dev *dev = usb_get_intfdata (intf);
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@ -2115,6 +2157,8 @@ static struct usb_driver usbtest_driver = {
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.probe = usbtest_probe,
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.ioctl = usbtest_ioctl,
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.disconnect = usbtest_disconnect,
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.suspend = usbtest_suspend,
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.resume = usbtest_resume,
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};
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/*-------------------------------------------------------------------------*/
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