---

yaml --- r: 185255 b: refs/heads/master c: 5d39877 h: refs/heads/master i: 185253: e6da348 185251: d8abda0 185247: 04dee41 v: v3
git-mirror · Mar 2, 2010 · b3f689d · b3f689d
1 parent 646e782
commit b3f689d
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Showing 4 changed files with 12 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d1b5b5c0a8a8204f0c51d5eb99736ecfb2fd5b4e
+refs/heads/master: 5d3987796c7a747e5ed3ded1eb64a9632d52a1a4
diff --git a/trunk/drivers/usb/core/quirks.c b/trunk/drivers/usb/core/quirks.c
@@ -120,6 +120,7 @@ void usb_detect_quirks(struct usb_device *udev)
 	 * for all devices.  It will affect things like hub resets
 	 * and EMF-related port disables.
 	 */
-	udev->persist_enabled = 1;
+	if (!(udev->quirks & USB_QUIRK_RESET_MORPHS))
+		udev->persist_enabled = 1;
 #endif	/* CONFIG_PM */
 }
diff --git a/trunk/drivers/usb/storage/transport.c b/trunk/drivers/usb/storage/transport.c
@@ -47,6 +47,8 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 
+#include <linux/usb/quirks.h>
+
 #include <scsi/scsi.h>
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_device.h>
@@ -1297,6 +1299,10 @@ int usb_stor_port_reset(struct us_data *us)
 {
 	int result;
 
+	/*for these devices we must use the class specific method */
+	if (us->pusb_dev->quirks & USB_QUIRK_RESET_MORPHS)
+		return -EPERM;
+
 	result = usb_lock_device_for_reset(us->pusb_dev, us->pusb_intf);
 	if (result < 0)
 		US_DEBUGP("unable to lock device for reset: %d\n", result);

diff --git a/trunk/include/linux/usb/quirks.h b/trunk/include/linux/usb/quirks.h
@@ -19,4 +19,7 @@
 /* device can't handle its Configuration or Interface strings */
 #define USB_QUIRK_CONFIG_INTF_STRINGS	0x00000008
 
+/*device will morph if reset, don't use reset for handling errors */
+#define USB_QUIRK_RESET_MORPHS		0x00000010
+
 #endif /* __LINUX_USB_QUIRKS_H */