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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-30 17:16:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-07-30 17:16:36 -0700 |
| commit | 4d0bd657d77d599307649aa03991b05e3ddef059 (patch) | |
| tree | a1b028afe393695ea8ccbe4a2ef7742b94d82ef7 /drivers | |
| parent | 26bcd8b72563b4c54892c4c2a409f6656fb8ae8b (diff) | |
| parent | e0198b290dcd8313bdf313a0d083033d5c01d761 (diff) | |
| download | linux-4d0bd657d77d599307649aa03991b05e3ddef059.tar.gz | |
Merge branch 'akpm' (patches from Andrew Morton)
Merge fixes from Andrew Morton: "10 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: Josh has moved kexec: export free_huge_page to VMCOREINFO mm: fix filemap.c pagecache_get_page() kernel-doc warnings mm: debugfs: move rounddown_pow_of_two() out from do_fault path memcg: oom_notify use-after-free fix hwpoison: call action_result() in failure path of hwpoison_user_mappings() hwpoison: fix hugetlbfs/thp precheck in hwpoison_user_mappings() rapidio/tsi721_dma: fix failure to obtain transaction descriptor mm, thp: do not allow thp faults to avoid cpuset restrictions mm/page-writeback.c: fix divide by zero in bdi_dirty_limits()
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rapidio/devices/tsi721_dma.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/rapidio/devices/tsi721_dma.c b/drivers/rapidio/devices/tsi721_dma.c index 9b60b1f3261c..44341dc5b148 100644 --- a/drivers/rapidio/devices/tsi721_dma.c +++ b/drivers/rapidio/devices/tsi721_dma.c @@ -287,6 +287,12 @@ struct tsi721_tx_desc *tsi721_desc_get(struct tsi721_bdma_chan *bdma_chan) "desc %p not ACKed\n", tx_desc); } + if (ret == NULL) { + dev_dbg(bdma_chan->dchan.device->dev, + "%s: unable to obtain tx descriptor\n", __func__); + goto err_out; + } + i = bdma_chan->wr_count_next % bdma_chan->bd_num; if (i == bdma_chan->bd_num - 1) { i = 0; @@ -297,7 +303,7 @@ struct tsi721_tx_desc *tsi721_desc_get(struct tsi721_bdma_chan *bdma_chan) tx_desc->txd.phys = bdma_chan->bd_phys + i * sizeof(struct tsi721_dma_desc); tx_desc->hw_desc = &((struct tsi721_dma_desc *)bdma_chan->bd_base)[i]; - +err_out: spin_unlock_bh(&bdma_chan->lock); return ret; |