Hi,

there is a gross endianness violation in mos7720_interrupt_callback.
You cannot assume that you can simply cast into unsigned int data
coming over the wire.

Could you clarify which order is the correct wire order?

        Regards
                Oliver
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--------

--- linux-2.6.21-rc3-git7/drivers/usb/serial/mos7720.c.alt      2007-03-13 
09:33:49.000000000 +0100
+++ linux-2.6.21-rc3-git7/drivers/usb/serial/mos7720.c  2007-03-13 
09:34:32.000000000 +0100
@@ -103,8 +103,7 @@
 {
        int result;
        int length;
-       __u32 *data;
-       unsigned int status;
+       __u8 *data;
        __u8 sp1;
        __u8 sp2;
        __u8 st;
@@ -146,11 +145,16 @@
                return;
        }
 
-       status = *data;
-
+       /*FIXME: the old code is contrary to the comment above*/
+#if 0
        sp1 = (status & 0xff000000)>>24;
        sp2 = (status & 0x00ff0000)>>16;
        st = status & 0x000000ff;
+#endif
+
+       sp1 = data[3];
+       sp2 = data[2];
+       st = data[0];
 
        if ((sp1 & 0x01) || (sp2 & 0x01)) {
                /* No Interrupt Pending in both the ports */

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