linux-kernel - [patch] uwb: remove duplicate cpu_to

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Date:	Tue, 23 Feb 2010 15:04:23 +0300
From:	Dan Carpenter <error27@...il.com>
To:	David Vrabel <david.vrabel@....com>
Cc:	André Goddard Rosa <andre.goddard@...il.com>,
	Jiri Kosina <jkosina@...e.cz>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] uwb: remove duplicate cpu_to_le16()

These parameters should be passed as cpu endian because we change it to
little endian inside usb_control_msg().  On x86 cpu_to_le16() doesn't
do anything so either way works but I think the original code would break 
on big endian systems.

I removed the masks as well because that usb_control_msg() parameters 
are __u16 so we already only use the lower bits.

Signed-off-by: Dan Carpenter <error27@...il.com>
---
I found this through static checking and I can't test it.  Please
review carefully.

diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c
index 0bb665a..a7d4023 100644
--- a/drivers/uwb/i1480/dfu/usb.c
+++ b/drivers/uwb/i1480/dfu/usb.c
@@ -120,8 +120,7 @@ int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
 		result = usb_control_msg(
 			i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
 			0xf0, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			cpu_to_le16(memory_address & 0xffff),
-			cpu_to_le16((memory_address >> 16) & 0xffff),
+			memory_address,	(memory_address >> 16),
 			i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
 		if (result < 0)
 			break;
@@ -166,8 +165,7 @@ int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
 		result = usb_control_msg(
 			i1480_usb->usb_dev, usb_rcvctrlpipe(i1480_usb->usb_dev, 0),
 			0xf0, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
-			cpu_to_le16(itr_addr & 0xffff),
-			cpu_to_le16((itr_addr >> 16) & 0xffff),
+			itr_addr, (itr_addr >> 16),
 			i1480->cmd_buf + itr, itr_size,
 			100 /* FIXME: arbitrary */);
 		if (result < 0) {
--
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