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authorIvo van Doorn <ivdoorn@gmail.com>2007-11-15 23:41:31 +0100
committerDavid S. Miller <davem@sunset.davemloft.net>2007-11-18 18:47:37 -0800
commitb242e891c218162cfbae064b1a9136cdbed5ee53 (patch)
tree3e460f49ffd103881082bc561d0536109517b617
parent2ffbb8377c7a0713baf6644e285adc27a5654582 (diff)
rt2x00: Request usb_maxpacket() once
The usb max packet size won't change during the device's presence. We should store it in a variable inside rt2x00dev and use that. This should also fix a division error when the device is being hot-unplugged while a frame is being send out. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/rt2x00/rt2500usb.c7
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00.h7
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00usb.c9
-rw-r--r--drivers/net/wireless/rt2x00/rt73usb.c4
4 files changed, 17 insertions, 10 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 277a020b35e..50775f9234c 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1032,7 +1032,7 @@ static void rt2500usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
}
static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
- int maxpacket, struct sk_buff *skb)
+ struct sk_buff *skb)
{
int length;
@@ -1041,7 +1041,7 @@ static int rt2500usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
* but it must _not_ be a multiple of the USB packet size.
*/
length = roundup(skb->len, 2);
- length += (2 * !(length % maxpacket));
+ length += (2 * !(length % rt2x00dev->usb_maxpacket));
return length;
}
@@ -1643,7 +1643,6 @@ static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
struct data_entry *beacon;
struct data_entry *guardian;
int pipe = usb_sndbulkpipe(usb_dev, 1);
- int max_packet = usb_maxpacket(usb_dev, pipe, 1);
int length;
/*
@@ -1672,7 +1671,7 @@ static int rt2500usb_beacon_update(struct ieee80211_hw *hw,
ring->desc_size),
skb->len - ring->desc_size, control);
- length = rt2500usb_get_tx_data_len(rt2x00dev, max_packet, skb);
+ length = rt2500usb_get_tx_data_len(rt2x00dev, skb);
usb_fill_bulk_urb(beacon->priv, usb_dev, pipe,
skb->data, length, rt2500usb_beacondone, beacon);
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index d1ad5251a77..c8f16f161c2 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -418,7 +418,7 @@ struct rt2x00lib_ops {
int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
struct data_ring *ring, struct sk_buff *skb,
struct ieee80211_tx_control *control);
- int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev, int maxpacket,
+ int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
struct sk_buff *skb);
void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
unsigned int queue);
@@ -599,6 +599,11 @@ struct rt2x00_dev {
u32 *rf;
/*
+ * USB Max frame size (for rt2500usb & rt73usb).
+ */
+ u16 usb_maxpacket;
+
+ /*
* Current TX power value.
*/
u16 tx_power;
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 73cc726c404..1f5675dd329 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -159,7 +159,6 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
interface_to_usbdev(rt2x00dev_usb(rt2x00dev));
struct data_entry *entry = rt2x00_get_data_entry(ring);
int pipe = usb_sndbulkpipe(usb_dev, 1);
- int max_packet = usb_maxpacket(usb_dev, pipe, 1);
u32 length;
if (rt2x00_ring_full(ring)) {
@@ -194,8 +193,7 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
* length of the data to usb_fill_bulk_urb. Pass the skb
* to the driver to determine what the length should be.
*/
- length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev,
- max_packet, skb);
+ length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, skb);
/*
* Initialize URB and send the frame to the device.
@@ -490,6 +488,11 @@ int rt2x00usb_probe(struct usb_interface *usb_intf,
rt2x00dev->ops = ops;
rt2x00dev->hw = hw;
+ rt2x00dev->usb_maxpacket =
+ usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1);
+ if (!rt2x00dev->usb_maxpacket)
+ rt2x00dev->usb_maxpacket = 1;
+
retval = rt2x00usb_alloc_reg(rt2x00dev);
if (retval)
goto exit_free_device;
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index dc640bf6b5e..c0671c2e6e7 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1251,7 +1251,7 @@ static void rt73usb_write_tx_desc(struct rt2x00_dev *rt2x00dev,
}
static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
- int maxpacket, struct sk_buff *skb)
+ struct sk_buff *skb)
{
int length;
@@ -1260,7 +1260,7 @@ static int rt73usb_get_tx_data_len(struct rt2x00_dev *rt2x00dev,
* but it must _not_ be a multiple of the USB packet size.
*/
length = roundup(skb->len, 4);
- length += (4 * !(length % maxpacket));
+ length += (4 * !(length % rt2x00dev->usb_maxpacket));
return length;
}