From 325b70c233396f0cfe15012682a5080bf8040901 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 19 Mar 2007 13:58:29 +0100 Subject: [PATCH] USB: fix endianness in mos7720 there's code unclean w.r.t. endianness in the mos7720 driver. Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7720.c | 19 +++++++++---------- 1 file 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 { -- 2.7.4