From: Oliver Neukum <[EMAIL PROTECTED]>
there's code unclean w.r.t. endianness in the mos7720 driver.
Signed-off-by: Oliver Neukum <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/serial/mos7720.c | 19 +++++++++----------
1 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 6ba87e6..b563e2a 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -103,11 +103,9 @@ static void mos7720_interrupt_callback(struct urb *urb)
{
int result;
int length;
- __u32 *data;
- unsigned int status;
+ __u8 *data;
__u8 sp1;
__u8 sp2;
- __u8 st;
dbg("%s"," : Entering\n");
@@ -141,18 +139,19 @@ static void mos7720_interrupt_callback(struct urb *urb)
* Byte 2 IIR Port 2 (port.number is 1)
* Byte 3 --------------
* Byte 4 FIFO status for both */
- if (length && length > 4) {
+
+ /* the above description is inverted
+ * oneukum 2007-03-14 */
+
+ if (unlikely(length != 4)) {
dbg("Wrong data !!!");
return;
}
- status = *data;
-
- sp1 = (status & 0xff000000)>>24;
- sp2 = (status & 0x00ff0000)>>16;
- st = status & 0x000000ff;
+ sp1 = data[3];
+ sp2 = data[2];
- if ((sp1 & 0x01) || (sp2 & 0x01)) {
+ if ((sp1 | sp2) & 0x01) {
/* No Interrupt Pending in both the ports */
dbg("No Interrupt !!!");
} else {
--
1.5.1.2
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