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Date: Thu, 18 Jun 2009 19:03:47 +0200
From: Michael Buesch <mb@...sch.de>
To: Petko Manolov <petkan@...rs.sourceforge.net>
Cc: linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] pegasus usb-net: Fix endianness bugs
This fixes various endianness bugs. Some harmless and some real ones.
This is tested on a PowerPC-64 machine.
Signed-off-by: Michael Buesch <mb@...sch.de>
Cc: Stable <stable@...nel.org>
---
drivers/net/usb/pegasus.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
--- linux-2.6.30.orig/drivers/net/usb/pegasus.c
+++ linux-2.6.30/drivers/net/usb/pegasus.c
@@ -297,7 +297,7 @@ static int update_eth_regs_async(pegasus
pegasus->dr.bRequestType = PEGASUS_REQT_WRITE;
pegasus->dr.bRequest = PEGASUS_REQ_SET_REGS;
- pegasus->dr.wValue = 0;
+ pegasus->dr.wValue = cpu_to_le16(0);
pegasus->dr.wIndex = cpu_to_le16(EthCtrl0);
pegasus->dr.wLength = cpu_to_le16(3);
pegasus->ctrl_urb->transfer_buffer_length = 3;
@@ -446,11 +446,12 @@ static int write_eprom_word(pegasus_t *
int i;
__u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE };
int ret;
+ __le16 le_data = cpu_to_le16(data);
set_registers(pegasus, EpromOffset, 4, d);
enable_eprom_write(pegasus);
set_register(pegasus, EpromOffset, index);
- set_registers(pegasus, EpromData, 2, &data);
+ set_registers(pegasus, EpromData, 2, &le_data);
set_register(pegasus, EpromCtrl, EPROM_WRITE);
for (i = 0; i < REG_TIMEOUT; i++) {
@@ -923,29 +924,32 @@ static struct net_device_stats *pegasus_
static inline void disable_net_traffic(pegasus_t * pegasus)
{
- int tmp = 0;
+ __le16 tmp = cpu_to_le16(0);
- set_registers(pegasus, EthCtrl0, 2, &tmp);
+ set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp);
}
static inline void get_interrupt_interval(pegasus_t * pegasus)
{
- __u8 data[2];
+ u16 data;
+ u8 interval;
- read_eprom_word(pegasus, 4, (__u16 *) data);
+ read_eprom_word(pegasus, 4, &data);
+ interval = data >> 8;
if (pegasus->usb->speed != USB_SPEED_HIGH) {
- if (data[1] < 0x80) {
+ if (interval < 0x80) {
if (netif_msg_timer(pegasus))
dev_info(&pegasus->intf->dev, "intr interval "
"changed from %ums to %ums\n",
- data[1], 0x80);
- data[1] = 0x80;
+ interval, 0x80);
+ interval = 0x80;
+ data = (data & 0x00FF) | ((u16)interval << 8);
#ifdef PEGASUS_WRITE_EEPROM
- write_eprom_word(pegasus, 4, *(__u16 *) data);
+ write_eprom_word(pegasus, 4, data);
#endif
}
}
- pegasus->intr_interval = data[1];
+ pegasus->intr_interval = interval;
}
static void set_carrier(struct net_device *net)
@@ -1299,7 +1303,8 @@ static int pegasus_blacklisted(struct us
/* Special quirk to keep the driver from handling the Belkin Bluetooth
* dongle which happens to have the same ID.
*/
- if ((udd->idVendor == VENDOR_BELKIN && udd->idProduct == 0x0121) &&
+ if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) &&
+ (udd->idProduct == cpu_to_le16(0x0121)) &&
(udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) &&
(udd->bDeviceProtocol == 1))
return 1;
--
Greetings, Michael.
--
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