The memory allocation flag GFP_KERNEL is not permissible in an

interrupt callback. It has to be GFP_ATOMIC. The submit_urb
function has been called with the wrong kernel kernel flag. It's
now GFP_ATOMIC. Thanks for the feedback from Dave Brownell.

diff --git a/include/linux/usb.h b/include/linux/usb.h
index b4a1d04d57d8ee8d2f50ca2594bcc25d0d3f95e3..331c2b25309ae9b99257ac8ee49135dd9c55c02e 100644 (file)
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -32,7 +32,7 @@
 #define PROBE_ERR_RETURN(x) NULL
 #else
 #define USB_ALLOC_URB(x) usb_alloc_urb(x,GFP_KERNEL)
-#define USB_SUBMIT_URB(x) usb_submit_urb(x,GFP_KERNEL)
+#define USB_SUBMIT_URB(x) usb_submit_urb(x,GFP_ATOMIC)
 #define PROBE_ERR_RETURN(x) x
 #endif