Author: nick
Date: 2012-05-01 17:34:13 +0100 (Tue, 01 May 2012)
New Revision: 1863

Modified:
   balloon/branches/menuconfig2/package/kernel/patches/2.6.39.4/pxa27x_udc.patch
Log:
fix timeout handling for NAK packet patch

Modified: balloon/branches/menuconfig2/package/kernel/patches/2.6.39.4/pxa27x_udc.patch
===================================================================
--- balloon/branches/menuconfig2/package/kernel/patches/2.6.39.4/pxa27x_udc.patch	2012-05-01 16:33:18 UTC (rev 1862)
+++ balloon/branches/menuconfig2/package/kernel/patches/2.6.39.4/pxa27x_udc.patch	2012-05-01 16:34:13 UTC (rev 1863)
@@ -1,8 +1,8 @@
 Index: linux-2.6.39.4/drivers/usb/gadget/pxa27x_udc.c
 ===================================================================
---- linux-2.6.39.4.orig/drivers/usb/gadget/pxa27x_udc.c	2012-03-02 16:06:20.000000000 +0000
-+++ linux-2.6.39.4/drivers/usb/gadget/pxa27x_udc.c	2012-03-02 16:06:28.000000000 +0000
-@@ -1325,6 +1325,23 @@
+--- linux-2.6.39.4.orig/drivers/usb/gadget/pxa27x_udc.c	2011-08-03 20:43:28.000000000 +0100
++++ linux-2.6.39.4/drivers/usb/gadget/pxa27x_udc.c	2012-05-01 14:00:33.000000000 +0100
+@@ -1325,6 +1325,27 @@
  	ep_write_UDCCSR(ep, UDCCSR_FST | UDCCSR_FEF);
  	if (is_ep0(ep))
  		set_ep0state(ep->dev, STALL);
@@ -11,17 +11,21 @@
 +		// wait till CLEAR_FEATURE(STALL) must have happened or timeout
 +		unsigned long timeout = jiffies + msecs_to_jiffies(50);
 +		// wait till STALL handshake happened
++		spin_unlock_irqrestore(&ep->lock, flags);
 +		while (udc_ep_readl(ep, UDCCSR) & UDCCSR_FST) {
 +			if (jiffies > timeout)
 +				break;
 +		}
++		spin_lock_irqsave(&ep->lock, flags);
 +		// clear any outstanding NAKs
 +		udc_ep_writel(ep, UDCCSR, udc_ep_readl(ep, UDCCSR) | UDCCSR_TRN);
 +		// wait for another NAK - ie IN request must have NAK'd
++		spin_unlock_irqrestore(&ep->lock, flags);
 +		while (!(udc_ep_readl(ep, UDCCSR) & UDCCSR_TRN)) {
 +			if (jiffies > timeout)
 +				break;
 +		}
++		spin_lock_irqsave(&ep->lock, flags);
 +	}
  
  out: