[PATCH 03/30] spi: dw: Initialize n_bytes before the memory barrier

[Serge Semin]

Since n_bytes field of the DW SPI private data is also utilized by the
IRQ handler, we need to make sure it' initialization is done before the
memory barrier.

Signed-off-by: Serge Semin <sergey.se...@baikalelectronics.ru>
---
 drivers/spi/spi-dw-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
index 8b3ce5a0378a..1af74362461d 100644
--- a/drivers/spi/spi-dw-core.c
+++ b/drivers/spi/spi-dw-core.c
@@ -299,6 +299,7 @@ static int dw_spi_transfer_one(struct spi_controller 
*master,
 
        dws->dma_mapped = 0;
        spin_lock_irqsave(&dws->buf_lock, flags);
+       dws->n_bytes = DIV_ROUND_UP(transfer->bits_per_word, BITS_PER_BYTE);
        dws->tx = (void *)transfer->tx_buf;
        dws->tx_end = dws->tx + transfer->len;
        dws->rx = transfer->rx_buf;
@@ -323,7 +324,6 @@ static int dw_spi_transfer_one(struct spi_controller 
*master,
        }
 
        transfer->effective_speed_hz = dws->max_freq / chip->clk_div;
-       dws->n_bytes = DIV_ROUND_UP(transfer->bits_per_word, BITS_PER_BYTE);
 
        cr0 = dws->update_cr0(master, spi, transfer);
        dw_writel(dws, DW_SPI_CTRLR0, cr0);
-- 
2.27.0