diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2015-04-08 23:26:21 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-04-08 23:26:21 +0200 |
| commit | 462b69b1e43ceccab68a47d65b1e46520cd0fdc0 (patch) | |
| tree | 3c961fcb5889c5ab14ab36d8ef7421fc96c95959 /drivers/spi/spi-dw-mid.c | |
| parent | d8bf368d0631d4bc2612d8bf2e4e8e74e620d0cc (diff) | |
| parent | f22e6e847115abc3a0e2ad7bb18d243d42275af1 (diff) | |
Merge branch 'linus' into irq/core to get the GIC updates which
conflict with pending GIC changes.
Conflicts:
drivers/usb/isp1760/isp1760-core.c
Diffstat (limited to 'drivers/spi/spi-dw-mid.c')
| -rw-r--r-- | drivers/spi/spi-dw-mid.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index a0197fd4e95c..4f8c798e0633 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -108,7 +108,8 @@ static void dw_spi_dma_tx_done(void *arg) { struct dw_spi *dws = arg; - if (test_and_clear_bit(TX_BUSY, &dws->dma_chan_busy) & BIT(RX_BUSY)) + clear_bit(TX_BUSY, &dws->dma_chan_busy); + if (test_bit(RX_BUSY, &dws->dma_chan_busy)) return; dw_spi_xfer_done(dws); } @@ -139,6 +140,9 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_tx(struct dw_spi *dws) 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!txdesc) + return NULL; + txdesc->callback = dw_spi_dma_tx_done; txdesc->callback_param = dws; @@ -153,7 +157,8 @@ static void dw_spi_dma_rx_done(void *arg) { struct dw_spi *dws = arg; - if (test_and_clear_bit(RX_BUSY, &dws->dma_chan_busy) & BIT(TX_BUSY)) + clear_bit(RX_BUSY, &dws->dma_chan_busy); + if (test_bit(TX_BUSY, &dws->dma_chan_busy)) return; dw_spi_xfer_done(dws); } @@ -184,6 +189,9 @@ static struct dma_async_tx_descriptor *dw_spi_dma_prepare_rx(struct dw_spi *dws) 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!rxdesc) + return NULL; + rxdesc->callback = dw_spi_dma_rx_done; rxdesc->callback_param = dws; |