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@@ -103,11 +103,9 @@ static void mos7720_interrupt_callback(struct urb *urb)
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{
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int result;
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int length;
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- __u32 *data;
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- unsigned int status;
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+ __u8 *data;
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__u8 sp1;
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__u8 sp2;
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- __u8 st;
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dbg("%s"," : Entering\n");
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@@ -141,18 +139,19 @@ static void mos7720_interrupt_callback(struct urb *urb)
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* Byte 2 IIR Port 2 (port.number is 1)
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* Byte 3 --------------
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* Byte 4 FIFO status for both */
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- if (length && length > 4) {
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+
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+ /* the above description is inverted
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+ * oneukum 2007-03-14 */
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+
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+ if (unlikely(length != 4)) {
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dbg("Wrong data !!!");
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return;
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}
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- status = *data;
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-
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- sp1 = (status & 0xff000000)>>24;
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- sp2 = (status & 0x00ff0000)>>16;
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- st = status & 0x000000ff;
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+ sp1 = data[3];
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+ sp2 = data[2];
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- if ((sp1 & 0x01) || (sp2 & 0x01)) {
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+ if ((sp1 | sp2) & 0x01) {
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/* No Interrupt Pending in both the ports */
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dbg("No Interrupt !!!");
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} else {
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