 Home |
Products |
Support |
Community |
News |
xen-devel
[Xen-devel] [PATCH]UHC should not generate interrupt when USB device ret
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]UHC should not generate interrupt when USB device returns NAK |
| From: | "Huang, Xinmei" <xinmei.huang@xxxxxxxxx> |
| Date: | Tue, 5 Dec 2006 12:53:12 +0800 |
| Delivery-date: | Mon, 04 Dec 2006 20:54:43 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AccYIFUctQo+acaFStST+nWBI8j1CgACMYGg |
| Thread-topic: | [PATCH]UHC should not generate interrupt when USB device returns NAK |
This patch adds support for USB mouse/tablet status check and restricts Universal Host Controller interrupt generating when received NAK in interrupt transfer. According to usb spec, USB mouse/tablet device returns NAK to host controller if its status does not alter in interrupt transfer. And UHC should leave a TD active when receiving NAK and execute this incompleted TD in a subseqent frame. UHC only generates an interrupt on complete after the TD with ICO bit=1 is completed. This patch obliges UHC & USB mouse/tablet to behave consistently with spec. Signed-off-by: Xinmei Huang <xinmei.huang@xxxxxxxxx>
_______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] [PATCH]UHC should not generate interrupt when USB device returns NAK, Huang, Xinmei |
|---|---|
| Next by Date: | [Xen-devel] Recall: [PATCH]UHC should not generate interrupt when USB device returns NAK, Huang, Xinmei |
| Previous by Thread: | [Xen-devel] [PATCH]UHC should not generate interrupt when USB device returns NAK, Huang, Xinmei |
| Next by Thread: | [Xen-devel] Recall: [PATCH]UHC should not generate interrupt when USB device returns NAK, Huang, Xinmei |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
