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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