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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 18:25:34 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 18:25:34 +0300 |
| commit | 7e935c7ca1e6c398f11edac5beabfc4348e3b3a4 (patch) | |
| tree | 86da864ba6341bd86b5f5450c611f918722237b2 /drivers/dma/mic_x100_dma.c | |
| parent | c62432b40b5e03c25faf2c8f8547bba4908b8945 (diff) | |
| parent | e9d408e107db9a554b36c3a79f67b37dd3e16da0 (diff) | |
| download | linux-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.tar.xz | |
Merge branch 'memdup_user_nul' into work.misc
Diffstat (limited to 'drivers/dma/mic_x100_dma.c')
| -rw-r--r-- | drivers/dma/mic_x100_dma.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/dma/mic_x100_dma.c b/drivers/dma/mic_x100_dma.c index 068e920ecb68..cddfa8dbf4bd 100644 --- a/drivers/dma/mic_x100_dma.c +++ b/drivers/dma/mic_x100_dma.c @@ -317,6 +317,7 @@ mic_dma_prep_memcpy_lock(struct dma_chan *ch, dma_addr_t dma_dest, struct mic_dma_chan *mic_ch = to_mic_dma_chan(ch); struct device *dev = mic_dma_ch_to_device(mic_ch); int result; + struct dma_async_tx_descriptor *tx = NULL; if (!len && !flags) return NULL; @@ -324,10 +325,13 @@ mic_dma_prep_memcpy_lock(struct dma_chan *ch, dma_addr_t dma_dest, spin_lock(&mic_ch->prep_lock); result = mic_dma_do_dma(mic_ch, flags, dma_src, dma_dest, len); if (result >= 0) - return allocate_tx(mic_ch); - dev_err(dev, "Error enqueueing dma, error=%d\n", result); + tx = allocate_tx(mic_ch); + + if (!tx) + dev_err(dev, "Error enqueueing dma, error=%d\n", result); + spin_unlock(&mic_ch->prep_lock); - return NULL; + return tx; } static struct dma_async_tx_descriptor * @@ -335,13 +339,14 @@ mic_dma_prep_interrupt_lock(struct dma_chan *ch, unsigned long flags) { struct mic_dma_chan *mic_ch = to_mic_dma_chan(ch); int ret; + struct dma_async_tx_descriptor *tx = NULL; spin_lock(&mic_ch->prep_lock); ret = mic_dma_do_dma(mic_ch, flags, 0, 0, 0); if (!ret) - return allocate_tx(mic_ch); + tx = allocate_tx(mic_ch); spin_unlock(&mic_ch->prep_lock); - return NULL; + return tx; } /* Return the status of the transaction */ |