serial: max310x: Properly set flags in AutoCTS mode
commit5a8c296f5362fffc9da5da10eef01cf0b9b4ac7f
authorChristoph Vogtländer <c.vogtlaender@sigma-surface-science.com>
Wed, 4 Sep 2019 12:11:41 +0000 (4 14:11 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 5 Sep 2019 07:57:44 +0000 (5 09:57 +0200)
treed59c077b82e21459c000566aba89be3c013d9b1d
parent8966110c56459d3d0cf3bded77a92988063b0842
serial: max310x: Properly set flags in AutoCTS mode

Commit 391f93f2ec9f ("serial: core: Rework hw-assisted flow control
support") has changed the way the AutoCTS mode is handled.

According to that change, serial drivers which enable H/W AutoCTS mode must
set UPSTAT_AUTORTS, UPSTAT_AUTOCTS and UPSTAT_AUTOXOFF to prevent the
serial core from inadvertently disabling RX or TX. This patch adds proper
handling of UPSTAT_AUTORTS, UPSTAT_AUTOCTS and UPSTAT_AUTOXOFF flags.

Signed-off-by: Christoph Vogtländer <c.vogtlaender@sigma-surface-science.com>
Link: https://lore.kernel.org/r/20190904121141.4570-1-c.vogtlaender@sigma-surface-science.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/max310x.c