May 2021 - Linux-stable-mirror

FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL permission check" failed to apply to 5.11-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.11-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b91cfb2573aeb5ab426fc3c35bcfe9e0d2a7ecbc Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:32 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL permission check Changing the port type and closing_wait parameter are privileged operations so make sure to return -EPERM if a regular user tries to change them. Note that the closing_wait parameter would not actually have been changed but the return value did not indicate that. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-15-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 914b23071961..2d8e76263a25 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1270,6 +1270,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || (close_delay != info->port.close_delay) || + (closing_wait != info->port.closing_wait) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1296,11 +1297,11 @@ static int mxser_set_serial_info(struct tty_struct *tty, baud = ss->baud_base / ss->custom_divisor; tty_encode_baud_rate(tty, baud, baud); } - } - info->type = ss->type; + info->type = ss->type; - process_txrx_fifo(info); + process_txrx_fifo(info); + } if (tty_port_initialized(port)) { if (flags != (port->flags & ASYNC_SPD_MASK)) {

3 years, 8 months

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FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL permission check" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b91cfb2573aeb5ab426fc3c35bcfe9e0d2a7ecbc Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:32 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL permission check Changing the port type and closing_wait parameter are privileged operations so make sure to return -EPERM if a regular user tries to change them. Note that the closing_wait parameter would not actually have been changed but the return value did not indicate that. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-15-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 914b23071961..2d8e76263a25 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1270,6 +1270,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || (close_delay != info->port.close_delay) || + (closing_wait != info->port.closing_wait) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1296,11 +1297,11 @@ static int mxser_set_serial_info(struct tty_struct *tty, baud = ss->baud_base / ss->custom_divisor; tty_encode_baud_rate(tty, baud, baud); } - } - info->type = ss->type; + info->type = ss->type; - process_txrx_fifo(info); + process_txrx_fifo(info); + } if (tty_port_initialized(port)) { if (flags != (port->flags & ASYNC_SPD_MASK)) {

3 years, 8 months

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FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL permission check" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b91cfb2573aeb5ab426fc3c35bcfe9e0d2a7ecbc Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:32 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL permission check Changing the port type and closing_wait parameter are privileged operations so make sure to return -EPERM if a regular user tries to change them. Note that the closing_wait parameter would not actually have been changed but the return value did not indicate that. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-15-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 914b23071961..2d8e76263a25 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1270,6 +1270,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || (close_delay != info->port.close_delay) || + (closing_wait != info->port.closing_wait) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1296,11 +1297,11 @@ static int mxser_set_serial_info(struct tty_struct *tty, baud = ss->baud_base / ss->custom_divisor; tty_encode_baud_rate(tty, baud, baud); } - } - info->type = ss->type; + info->type = ss->type; - process_txrx_fifo(info); + process_txrx_fifo(info); + } if (tty_port_initialized(port)) { if (flags != (port->flags & ASYNC_SPD_MASK)) {

3 years, 8 months

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FAILED: patch "[PATCH] staging: fwserial: fix TIOCSSERIAL permission check" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 2104eb283df66a482b60254299acbe3c68c03412 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:20 +0200 Subject: [PATCH] staging: fwserial: fix TIOCSSERIAL permission check Changing the port close-delay parameter is a privileged operation so make sure to return -EPERM if a regular user tries to change it. Fixes: 7355ba3445f2 ("staging: fwserial: Add TTY-over-Firewire serial driver") Cc: stable(a)vger.kernel.org # 3.8 Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index c963848522b1..440d11423812 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -1232,20 +1232,24 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct fwtty_port *port = tty->driver_data; + unsigned int cdelay; if (ss->irq != 0 || ss->port != 0 || ss->custom_divisor != 0 || ss->baud_base != 400000000) return -EPERM; + cdelay = msecs_to_jiffies(ss->close_delay * 10); + mutex_lock(&port->port.mutex); if (!capable(CAP_SYS_ADMIN)) { - if (((ss->flags & ~ASYNC_USR_MASK) != + if (cdelay != port->port.close_delay || + ((ss->flags & ~ASYNC_USR_MASK) != (port->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->port.mutex); return -EPERM; } } - port->port.close_delay = msecs_to_jiffies(ss->close_delay * 10); + port->port.close_delay = cdelay; mutex_unlock(&port->port.mutex); return 0;

3 years, 8 months

1
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FAILED: patch "[PATCH] staging: fwserial: fix TIOCSSERIAL permission check" failed to apply to 4.19-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 2104eb283df66a482b60254299acbe3c68c03412 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:20 +0200 Subject: [PATCH] staging: fwserial: fix TIOCSSERIAL permission check Changing the port close-delay parameter is a privileged operation so make sure to return -EPERM if a regular user tries to change it. Fixes: 7355ba3445f2 ("staging: fwserial: Add TTY-over-Firewire serial driver") Cc: stable(a)vger.kernel.org # 3.8 Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index c963848522b1..440d11423812 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -1232,20 +1232,24 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct fwtty_port *port = tty->driver_data; + unsigned int cdelay; if (ss->irq != 0 || ss->port != 0 || ss->custom_divisor != 0 || ss->baud_base != 400000000) return -EPERM; + cdelay = msecs_to_jiffies(ss->close_delay * 10); + mutex_lock(&port->port.mutex); if (!capable(CAP_SYS_ADMIN)) { - if (((ss->flags & ~ASYNC_USR_MASK) != + if (cdelay != port->port.close_delay || + ((ss->flags & ~ASYNC_USR_MASK) != (port->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->port.mutex); return -EPERM; } } - port->port.close_delay = msecs_to_jiffies(ss->close_delay * 10); + port->port.close_delay = cdelay; mutex_unlock(&port->port.mutex); return 0;

3 years, 8 months

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FAILED: patch "[PATCH] staging: fwserial: fix TIOCSSERIAL permission check" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 2104eb283df66a482b60254299acbe3c68c03412 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:20 +0200 Subject: [PATCH] staging: fwserial: fix TIOCSSERIAL permission check Changing the port close-delay parameter is a privileged operation so make sure to return -EPERM if a regular user tries to change it. Fixes: 7355ba3445f2 ("staging: fwserial: Add TTY-over-Firewire serial driver") Cc: stable(a)vger.kernel.org # 3.8 Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index c963848522b1..440d11423812 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -1232,20 +1232,24 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct fwtty_port *port = tty->driver_data; + unsigned int cdelay; if (ss->irq != 0 || ss->port != 0 || ss->custom_divisor != 0 || ss->baud_base != 400000000) return -EPERM; + cdelay = msecs_to_jiffies(ss->close_delay * 10); + mutex_lock(&port->port.mutex); if (!capable(CAP_SYS_ADMIN)) { - if (((ss->flags & ~ASYNC_USR_MASK) != + if (cdelay != port->port.close_delay || + ((ss->flags & ~ASYNC_USR_MASK) != (port->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->port.mutex); return -EPERM; } } - port->port.close_delay = msecs_to_jiffies(ss->close_delay * 10); + port->port.close_delay = cdelay; mutex_unlock(&port->port.mutex); return 0;

3 years, 8 months

1
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FAILED: patch "[PATCH] staging: fwserial: fix TIOCSSERIAL permission check" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 2104eb283df66a482b60254299acbe3c68c03412 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:20 +0200 Subject: [PATCH] staging: fwserial: fix TIOCSSERIAL permission check Changing the port close-delay parameter is a privileged operation so make sure to return -EPERM if a regular user tries to change it. Fixes: 7355ba3445f2 ("staging: fwserial: Add TTY-over-Firewire serial driver") Cc: stable(a)vger.kernel.org # 3.8 Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index c963848522b1..440d11423812 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -1232,20 +1232,24 @@ static int set_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct fwtty_port *port = tty->driver_data; + unsigned int cdelay; if (ss->irq != 0 || ss->port != 0 || ss->custom_divisor != 0 || ss->baud_base != 400000000) return -EPERM; + cdelay = msecs_to_jiffies(ss->close_delay * 10); + mutex_lock(&port->port.mutex); if (!capable(CAP_SYS_ADMIN)) { - if (((ss->flags & ~ASYNC_USR_MASK) != + if (cdelay != port->port.close_delay || + ((ss->flags & ~ASYNC_USR_MASK) != (port->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->port.mutex); return -EPERM; } } - port->port.close_delay = msecs_to_jiffies(ss->close_delay * 10); + port->port.close_delay = cdelay; mutex_unlock(&port->port.mutex); return 0;

3 years, 8 months

1
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FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions" failed to apply to 5.11-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.11-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From be6cf583d24dfe87324dd2830d90fc056e0a6648 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:31 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions The port close_delay and closing wait parameters set by TIOCSSERIAL are specified in jiffies, while the values returned by TIOCGSERIAL are specified in centiseconds. Add the missing conversions so that TIOCSSERIAL works as expected also when HZ is not 100. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-14-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 4203b64bccdb..914b23071961 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1208,19 +1208,26 @@ static int mxser_get_serial_info(struct tty_struct *tty, { struct mxser_port *info = tty->driver_data; struct tty_port *port = &info->port; + unsigned int closing_wait, close_delay; if (tty->index == MXSER_PORTS) return -ENOTTY; mutex_lock(&port->mutex); + + close_delay = jiffies_to_msecs(info->port.close_delay) / 10; + closing_wait = info->port.closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = jiffies_to_msecs(closing_wait) / 10; + ss->type = info->type, ss->line = tty->index, ss->port = info->ioaddr, ss->irq = info->board->irq, ss->flags = info->port.flags, ss->baud_base = info->baud_base, - ss->close_delay = info->port.close_delay, - ss->closing_wait = info->port.closing_wait, + ss->close_delay = close_delay; + ss->closing_wait = closing_wait; ss->custom_divisor = info->custom_divisor, mutex_unlock(&port->mutex); return 0; @@ -1233,7 +1240,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, struct tty_port *port = &info->port; speed_t baud; unsigned long sl_flags; - unsigned int flags; + unsigned int flags, close_delay, closing_wait; int retval = 0; if (tty->index == MXSER_PORTS) @@ -1255,9 +1262,14 @@ static int mxser_set_serial_info(struct tty_struct *tty, flags = port->flags & ASYNC_SPD_MASK; + close_delay = msecs_to_jiffies(ss->close_delay * 10); + closing_wait = ss->closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = msecs_to_jiffies(closing_wait * 10); + if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || - (ss->close_delay != info->port.close_delay) || + (close_delay != info->port.close_delay) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1271,8 +1283,8 @@ static int mxser_set_serial_info(struct tty_struct *tty, */ port->flags = ((port->flags & ~ASYNC_FLAGS) | (ss->flags & ASYNC_FLAGS)); - port->close_delay = ss->close_delay * HZ / 100; - port->closing_wait = ss->closing_wait * HZ / 100; + port->close_delay = close_delay; + port->closing_wait = closing_wait; if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && (ss->baud_base != info->baud_base || ss->custom_divisor !=

3 years, 8 months

1
0
0 0

FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From be6cf583d24dfe87324dd2830d90fc056e0a6648 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:31 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions The port close_delay and closing wait parameters set by TIOCSSERIAL are specified in jiffies, while the values returned by TIOCGSERIAL are specified in centiseconds. Add the missing conversions so that TIOCSSERIAL works as expected also when HZ is not 100. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-14-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 4203b64bccdb..914b23071961 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1208,19 +1208,26 @@ static int mxser_get_serial_info(struct tty_struct *tty, { struct mxser_port *info = tty->driver_data; struct tty_port *port = &info->port; + unsigned int closing_wait, close_delay; if (tty->index == MXSER_PORTS) return -ENOTTY; mutex_lock(&port->mutex); + + close_delay = jiffies_to_msecs(info->port.close_delay) / 10; + closing_wait = info->port.closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = jiffies_to_msecs(closing_wait) / 10; + ss->type = info->type, ss->line = tty->index, ss->port = info->ioaddr, ss->irq = info->board->irq, ss->flags = info->port.flags, ss->baud_base = info->baud_base, - ss->close_delay = info->port.close_delay, - ss->closing_wait = info->port.closing_wait, + ss->close_delay = close_delay; + ss->closing_wait = closing_wait; ss->custom_divisor = info->custom_divisor, mutex_unlock(&port->mutex); return 0; @@ -1233,7 +1240,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, struct tty_port *port = &info->port; speed_t baud; unsigned long sl_flags; - unsigned int flags; + unsigned int flags, close_delay, closing_wait; int retval = 0; if (tty->index == MXSER_PORTS) @@ -1255,9 +1262,14 @@ static int mxser_set_serial_info(struct tty_struct *tty, flags = port->flags & ASYNC_SPD_MASK; + close_delay = msecs_to_jiffies(ss->close_delay * 10); + closing_wait = ss->closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = msecs_to_jiffies(closing_wait * 10); + if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || - (ss->close_delay != info->port.close_delay) || + (close_delay != info->port.close_delay) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1271,8 +1283,8 @@ static int mxser_set_serial_info(struct tty_struct *tty, */ port->flags = ((port->flags & ~ASYNC_FLAGS) | (ss->flags & ASYNC_FLAGS)); - port->close_delay = ss->close_delay * HZ / 100; - port->closing_wait = ss->closing_wait * HZ / 100; + port->close_delay = close_delay; + port->closing_wait = closing_wait; if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && (ss->baud_base != info->baud_base || ss->custom_divisor !=

3 years, 8 months

1
0
0 0

FAILED: patch "[PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From be6cf583d24dfe87324dd2830d90fc056e0a6648 Mon Sep 17 00:00:00 2001 From: Johan Hovold <johan(a)kernel.org> Date: Wed, 7 Apr 2021 12:23:31 +0200 Subject: [PATCH] tty: mxser: fix TIOCSSERIAL jiffies conversions The port close_delay and closing wait parameters set by TIOCSSERIAL are specified in jiffies, while the values returned by TIOCGSERIAL are specified in centiseconds. Add the missing conversions so that TIOCSSERIAL works as expected also when HZ is not 100. Cc: stable(a)vger.kernel.org Signed-off-by: Johan Hovold <johan(a)kernel.org> Link: https://lore.kernel.org/r/20210407102334.32361-14-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 4203b64bccdb..914b23071961 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -1208,19 +1208,26 @@ static int mxser_get_serial_info(struct tty_struct *tty, { struct mxser_port *info = tty->driver_data; struct tty_port *port = &info->port; + unsigned int closing_wait, close_delay; if (tty->index == MXSER_PORTS) return -ENOTTY; mutex_lock(&port->mutex); + + close_delay = jiffies_to_msecs(info->port.close_delay) / 10; + closing_wait = info->port.closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = jiffies_to_msecs(closing_wait) / 10; + ss->type = info->type, ss->line = tty->index, ss->port = info->ioaddr, ss->irq = info->board->irq, ss->flags = info->port.flags, ss->baud_base = info->baud_base, - ss->close_delay = info->port.close_delay, - ss->closing_wait = info->port.closing_wait, + ss->close_delay = close_delay; + ss->closing_wait = closing_wait; ss->custom_divisor = info->custom_divisor, mutex_unlock(&port->mutex); return 0; @@ -1233,7 +1240,7 @@ static int mxser_set_serial_info(struct tty_struct *tty, struct tty_port *port = &info->port; speed_t baud; unsigned long sl_flags; - unsigned int flags; + unsigned int flags, close_delay, closing_wait; int retval = 0; if (tty->index == MXSER_PORTS) @@ -1255,9 +1262,14 @@ static int mxser_set_serial_info(struct tty_struct *tty, flags = port->flags & ASYNC_SPD_MASK; + close_delay = msecs_to_jiffies(ss->close_delay * 10); + closing_wait = ss->closing_wait; + if (closing_wait != ASYNC_CLOSING_WAIT_NONE) + closing_wait = msecs_to_jiffies(closing_wait * 10); + if (!capable(CAP_SYS_ADMIN)) { if ((ss->baud_base != info->baud_base) || - (ss->close_delay != info->port.close_delay) || + (close_delay != info->port.close_delay) || ((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) { mutex_unlock(&port->mutex); return -EPERM; @@ -1271,8 +1283,8 @@ static int mxser_set_serial_info(struct tty_struct *tty, */ port->flags = ((port->flags & ~ASYNC_FLAGS) | (ss->flags & ASYNC_FLAGS)); - port->close_delay = ss->close_delay * HZ / 100; - port->closing_wait = ss->closing_wait * HZ / 100; + port->close_delay = close_delay; + port->closing_wait = closing_wait; if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST && (ss->baud_base != info->baud_base || ss->custom_divisor !=

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Linux-stable-mirror May 2021