diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2021-06-10 20:08:06 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-15 14:01:52 +0200 |
| commit | 08a84410a04f05c7c1b8e833f552416d8eb9f6fe (patch) | |
| tree | 7ede70360430c7736c61c61f56220a7d121b28ee /drivers/watchdog/sbc_fitpc2_wdt.c | |
| parent | 99289bf1a76c0aea6ac0f77335b8c9bdca16aac7 (diff) | |
serial: sh-sci: Stop dmaengine transfer in sci_stop_tx()
Stop dmaengine transfer in sci_stop_tx(). Otherwise, the following
message is possible output when system enters suspend and while
transferring data, because clearing TIE bit in SCSCR is not able to
stop any dmaengine transfer.
sh-sci e6550000.serial: ttySC1: Unable to drain transmitter
Note that this driver has already used some #ifdef in the .c file
so that this patch also uses #ifdef to fix the issue. Otherwise,
build errors happens if the CONFIG_SERIAL_SH_SCI_DMA is disabled.
Fixes: 73a19e4c0301 ("serial: sh-sci: Add DMA support.")
Cc: <stable@vger.kernel.org> # v4.9+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210610110806.277932-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/watchdog/sbc_fitpc2_wdt.c')
0 files changed, 0 insertions, 0 deletions