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wimax/i2400m: fix incorrect return -ESHUTDOWN when there is no Tx buffer available 

i2400m_tx() routine was returning -ESHUTDOWN even when there was no Tx buffer
available. This patch fixes the i2400m_tx() to return -ESHUTDOWN only when
the device is down(i2400m->tx_buf is NULL) and also to return -ENOSPC
when there is no Tx buffer. Error seen in the kernel log.
kernel: i2400m_sdio mmc0:0001:1: can't send message 0x5606: -108
kernel: i2400m_sdio mmc0:0001:1: Failed to issue 'Enter power save'command: -108

Signed-off-by: Prasanna S.Panchamukhi <prasannax.s.panchamukhi@intel.com>
This commit is contained in:
Prasanna S.Panchamukhi 2010-01-18 14:28:23 -08:00 committed by Inaky Perez-Gonzalez
parent 2b0b05ddc0
commit 4818d14de3
1 changed files with 4 additions and 2 deletions
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6
drivers/net/wimax/i2400m/tx.c
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@ -643,9 +643,11 @@ int i2400m_tx(struct i2400m *i2400m, const void *buf, size_t buf_len,
* current one is out of payload slots or we have a singleton,
* close it and start a new one */
spin_lock_irqsave(&i2400m->tx_lock, flags);
result = -ESHUTDOWN;
if (i2400m->tx_buf == NULL)
/* If tx_buf is NULL, device is shutdown */
if (i2400m->tx_buf == NULL) {
result = -ESHUTDOWN;
goto error_tx_new;
}
try_new:
if (unlikely(i2400m->tx_msg == NULL))
i2400m_tx_new(i2400m);