From: Anthony Mallet Date: Thu, 12 Mar 2020 13:31:00 +0000 (+0100) Subject: USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL X-Git-Tag: v4.14.175~109 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3024ba3e32637e3a541be4954799f5a096c39bb;p=thirdparty%2Fkernel%2Fstable.git USB: cdc-acm: fix close_delay and closing_wait units in TIOCSSERIAL [ Upstream commit 633e2b2ded739a34bd0fb1d8b5b871f7e489ea29 ] close_delay and closing_wait are specified in hundredth of a second but stored internally in jiffies. Use the jiffies_to_msecs() and msecs_to_jiffies() functions to convert from each other. Signed-off-by: Anthony Mallet Cc: stable Link: https://lore.kernel.org/r/20200312133101.7096-1-anthony.mallet@laas.fr Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 0453f0eb11781..74d0a91e84273 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -926,10 +926,10 @@ static int get_serial_info(struct acm *acm, struct serial_struct __user *info) memset(&tmp, 0, sizeof(tmp)); tmp.xmit_fifo_size = acm->writesize; tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); - tmp.close_delay = acm->port.close_delay / 10; + tmp.close_delay = jiffies_to_msecs(acm->port.close_delay) / 10; tmp.closing_wait = acm->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ? ASYNC_CLOSING_WAIT_NONE : - acm->port.closing_wait / 10; + jiffies_to_msecs(acm->port.closing_wait) / 10; if (copy_to_user(info, &tmp, sizeof(tmp))) return -EFAULT; @@ -947,9 +947,10 @@ static int set_serial_info(struct acm *acm, if (copy_from_user(&new_serial, newinfo, sizeof(new_serial))) return -EFAULT; - close_delay = new_serial.close_delay * 10; + close_delay = msecs_to_jiffies(new_serial.close_delay * 10); closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ? - ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10; + ASYNC_CLOSING_WAIT_NONE : + msecs_to_jiffies(new_serial.closing_wait * 10); mutex_lock(&acm->port.mutex);