diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wimax/i2400m/tx.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/net/wimax/i2400m/tx.c b/drivers/net/wimax/i2400m/tx.c index 8561c07..21909e5 100644 --- a/drivers/net/wimax/i2400m/tx.c +++ b/drivers/net/wimax/i2400m/tx.c @@ -877,27 +877,40 @@ EXPORT_SYMBOL_GPL(i2400m_tx_msg_sent); * i2400m_tx_setup - Initialize the TX queue and infrastructure * * Make sure we reset the TX sequence to zero, as when this function - * is called, the firmware has been just restarted. + * is called, the firmware has been just restarted. Same rational + * for tx_in, tx_out, tx_msg_size and tx_msg. We reset them since + * the memory for TX queue is reallocated. */ int i2400m_tx_setup(struct i2400m *i2400m) { - int result; + int result = 0; + void *tx_buf; + unsigned long flags; /* Do this here only once -- can't do on * i2400m_hard_start_xmit() as we'll cause race conditions if * the WS was scheduled on another CPU */ INIT_WORK(&i2400m->wake_tx_ws, i2400m_wake_tx_work); - i2400m->tx_sequence = 0; + tx_buf = kmalloc(I2400M_TX_BUF_SIZE, GFP_ATOMIC); + if (tx_buf == NULL) { + result = -ENOMEM; + goto error_kmalloc; + } + /* Warn if the calculated buffer size exceeds I2400M_TX_BUF_SIZE. */ BUILD_BUG_ON(I2400M_TX_PDU_TOTAL_SIZE > I2400M_TX_BUF_SIZE); - i2400m->tx_buf = kmalloc(I2400M_TX_BUF_SIZE, GFP_KERNEL); - if (i2400m->tx_buf == NULL) - result = -ENOMEM; - else - result = 0; + spin_lock_irqsave(&i2400m->tx_lock, flags); + i2400m->tx_sequence = 0; + i2400m->tx_in = 0; + i2400m->tx_out = 0; + i2400m->tx_msg_size = 0; + i2400m->tx_msg = NULL; + i2400m->tx_buf = tx_buf; + spin_unlock_irqrestore(&i2400m->tx_lock, flags); /* Huh? the bus layer has to define this... */ BUG_ON(i2400m->bus_tx_block_size == 0); +error_kmalloc: return result; } |