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staging: greybus: uart: fix TIOCSSERIAL jiffies conversions 

The port close_delay and closing_wait parameters set by TIOCSSERIAL are
specified in jiffies and not milliseconds.

Add the missing conversions so that TIOCSSERIAL works as expected also
when HZ is not 1000.

Fixes: e68453ed28 ("greybus: uart-gb: now builds, more framework added")
Cc: stable@vger.kernel.org	# 4.9
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407102334.32361-6-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2021-04-07 12:23:23 +02:00 committed by Greg Kroah-Hartman
parent 5e84a66f36
commit b71e571ada
1 changed files with 7 additions and 4 deletions
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11
drivers/staging/greybus/uart.c
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@ -614,10 +614,12 @@ static int get_serial_info(struct tty_struct *tty,
ss->line = gb_tty->minor;
ss->xmit_fifo_size = 16;
ss->baud_base = 9600;
ss->close_delay = gb_tty->port.close_delay / 10;
ss->close_delay = jiffies_to_msecs(gb_tty->port.close_delay) / 10;
ss->closing_wait =
gb_tty->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
ASYNC_CLOSING_WAIT_NONE : gb_tty->port.closing_wait / 10;
ASYNC_CLOSING_WAIT_NONE :
jiffies_to_msecs(gb_tty->port.closing_wait) / 10;
return 0;
}
@ -629,9 +631,10 @@ static int set_serial_info(struct tty_struct *tty,
unsigned int close_delay;
int retval = 0;
close_delay = ss->close_delay * 10;
close_delay = msecs_to_jiffies(ss->close_delay * 10);
closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10;
ASYNC_CLOSING_WAIT_NONE :
msecs_to_jiffies(ss->closing_wait * 10);
mutex_lock(&gb_tty->port.mutex);
if (!capable(CAP_SYS_ADMIN)) {