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author | Thomas Gleixner <tglx@linutronix.de> | 2016-01-12 13:01:12 +0300 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2016-01-12 13:01:12 +0300 |
commit | 1f16f116b01c110db20ab808562c8b8bc3ee3d6e (patch) | |
tree | 44db563f64cf5f8d62af8f99a61e2b248c44ea3a /drivers/dma/mic_x100_dma.c | |
parent | 03724ac3d48f8f0e3caf1d30fa134f8fd96c94e2 (diff) | |
parent | f9eccf24615672896dc13251410c3f2f33a14f95 (diff) | |
download | linux-1f16f116b01c110db20ab808562c8b8bc3ee3d6e.tar.xz |
Merge branches 'clockevents/4.4-fixes' and 'clockevents/4.5-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
Pull in fixes from Daniel Lezcano:
- Fix the vt8500 timer leading to a system lock up when dealing with too
small delta (Roman Volkov)
- Select the CLKSRC_MMIO when the fsl_ftm_timer is enabled with COMPILE_TEST
(Daniel Lezcano)
- Prevent to compile timers using the 'iomem' API when the architecture has
not HAS_IOMEM set (Richard Weinberger)
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 */ |