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Old 02-16-2011, 08:44 PM
Seth Forshee
 
Default rt2x00: Pad beacon to multiple of 32 bits.

From: Wolfgang Kufner <wolfgang.kufner@gmail.com>

BugLink: http://bugs.launchpad.net/bugs/659143

Pad beacon to a multiple of 32 bits in preparation for the change
from memcpy_toio() to __iowrite32_copy() in register_multiwrite().

Signed-off-by: Wolfgang Kufner <wolfgang.kufner@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
(backported from commit 739fd9405416e22732e46a9226a8cac379bd57fc upstream)
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
---
drivers/net/wireless/rt2x00/rt2800pci.c | 9 ++++++---
drivers/net/wireless/rt2x00/rt61pci.c | 8 ++++++--
2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index b2f2327..9ad676d 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -689,6 +689,7 @@ static void rt2800pci_write_beacon(struct queue_entry *entry,
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
unsigned int beacon_base;
+ unsigned int padding_len;
u32 reg;

/*
@@ -706,11 +707,13 @@ static void rt2800pci_write_beacon(struct queue_entry *entry,
skb_push(entry->skb, TXWI_DESC_SIZE);

/*
- * Write entire beacon with TXWI to register.
+ * Write entire beacon with TXWI and padding to register.
*/
+ padding_len = roundup(entry->skb->len, 4) - entry->skb->len;
+ skb_pad(entry->skb, padding_len);
beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
- rt2800_register_multiwrite(rt2x00dev, beacon_base,
- entry->skb->data, entry->skb->len);
+ rt2800_register_multiwrite(rt2x00dev, beacon_base, entry->skb->data,
+ entry->skb->len + padding_len);

/*
* Enable beaconing again.
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 766032e..23bcb65 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1863,6 +1863,7 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct queue_entry_priv_pci *entry_priv = entry->priv_data;
unsigned int beacon_base;
+ unsigned int padding_len;
u32 reg;

/*
@@ -1874,13 +1875,16 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
rt2x00pci_register_write(rt2x00dev, TXRX_CSR9, reg);

/*
- * Write entire beacon with descriptor to register.
+ * Write entire beacon with descriptor and padding to register.
*/
+ padding_len = roundup(entry->skb->len, 4) - entry->skb->len;
+ skb_pad(entry->skb, padding_len);
beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
rt2x00pci_register_multiwrite(rt2x00dev, beacon_base,
entry_priv->desc, TXINFO_SIZE);
rt2x00pci_register_multiwrite(rt2x00dev, beacon_base + TXINFO_SIZE,
- entry->skb->data, entry->skb->len);
+ entry->skb->data,
+ entry->skb->len + padding_len);

/*
* Enable beaconing again.
--
1.7.1


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