This patch check whether the kfifo lenth equal to the count of write data.If condition is true,ifx_spi_write need to trigger one mrdy_assert. If condition is false,the mrdy_assert will be triggered by the next ifx_spi_io. Cc: Bi Chao <chao.bi@xxxxxxxxx> Signed-off-by: Chen Jun <jun.d.chen@xxxxxxxxx> --- drivers/tty/serial/ifx6x60.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index ac718e1..b52ef8d 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -522,7 +522,8 @@ static int ifx_spi_write(struct tty_struct *tty, const unsigned char *buf, unsigned char *tmp_buf = (unsigned char *)buf; int tx_count = kfifo_in_locked(&ifx_dev->tx_fifo, tmp_buf, count, &ifx_dev->fifo_lock); - mrdy_assert(ifx_dev); + if (kfifo_len(&ifx_dev->tx_fifo) == count) + mrdy_assert(ifx_dev); return tx_count; } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
