Fugang Duan 88c1d2478e tty: serial: fsl_lpuart: check dma_tx_in_progress in tx dma callback
There have a corner case that tx DMA .callback() is coming after
.flush_buffer(), then .callback() should check dma_tx_in_progress
flag and return in directly.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Vipul Kumar <vipul_kumar@mentor.com>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20210817100203.21300-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-18 16:05:27 +02:00
..
2021-08-09 08:52:46 +02:00
2020-10-28 13:39:14 +01:00
2021-07-27 12:17:21 +02:00
2020-07-20 09:39:11 +02:00
2021-08-09 08:52:46 +02:00
2021-04-22 12:09:25 +02:00
2020-08-18 13:51:18 +02:00
2019-12-18 15:04:57 +01:00
2021-07-27 12:17:21 +02:00
2020-01-29 10:13:27 -08:00