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rt2x00: check for dma mappings errors

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Check output of dma_map_single functions which nowadays can fail (when
IOMMU is used). On write_beacon callbacks just print error, similar
like padding error is handled by rt2800_write_beacon.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2013-02-13 14:27:05 +01:00 • committed by John W. Linville
parent 52301a815e
commit 4ea545d476
4 changed files with 36 additions and 13 deletions
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12
drivers/net/wireless/rt2x00/rt2400pci.c
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@ -1185,8 +1185,14 @@ static void rt2400pci_write_beacon(struct queue_entry *entry,
rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
rt2x00queue_map_txskb(entry);
if (rt2x00queue_map_txskb(entry)) {
ERROR(rt2x00dev, "Fail to map beacon, aborting\n");
goto out;
}
/*
* Enable beaconing again.
*/
rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 1);
/*
* Write the TX descriptor for the beacon.
*/
@ -1196,7 +1202,7 @@ static void rt2400pci_write_beacon(struct queue_entry *entry,
* Dump beacon to userspace through debugfs.
*/
rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
out:
/*
* Enable beaconing again.
*/