diff options
| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-10-08 02:55:05 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-10-09 01:00:18 +0300 |
| commit | bf64b66036eef7d5a92fb1cb7398ef67a29fc64b (patch) | |
| tree | 71f388cd806454ff5566b144b12e390beba94771 /drivers/spi/spi-dw-dma.c | |
| parent | cf75baeac72c7cb57a8cf781e90cfd8ea77f2d51 (diff) | |
| download | linux-bf64b66036eef7d5a92fb1cb7398ef67a29fc64b.tar.xz | |
spi: dw: Add generic DW SSI status-check method
The DW SSI errors handling method can be generically implemented for all
types of the transfers: IRQ, DMA and poll-based ones. It will be a
function which checks the overflow/underflow error flags and resets the
controller if any of them is set. In the framework of this commit we make
use of the new method to detect the errors in the IRQ- and DMA-based SPI
transfer execution procedures.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20201007235511.4935-17-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw-dma.c')
| -rw-r--r-- | drivers/spi/spi-dw-dma.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c index 67539b847667..a09831c62192 100644 --- a/drivers/spi/spi-dw-dma.c +++ b/drivers/spi/spi-dw-dma.c @@ -176,17 +176,10 @@ static void dw_spi_dma_exit(struct dw_spi *dws) static irqreturn_t dw_spi_dma_transfer_handler(struct dw_spi *dws) { - u16 irq_status = dw_readl(dws, DW_SPI_ISR); + dw_spi_check_status(dws, false); - if (!irq_status) - return IRQ_NONE; - - dw_readl(dws, DW_SPI_ICR); - spi_reset_chip(dws); - - dev_err(&dws->master->dev, "%s: FIFO overrun/underrun\n", __func__); - dws->master->cur_msg->status = -EIO; complete(&dws->dma_completion); + return IRQ_HANDLED; } |