kernel/linux.git/drivers/usb/serial/generic.c, branch v4.11.5

sched/headers: Prepare to move signal wakeup & sigpending methods from into

2017-03-02T07:42:32+00:00

Fix up affected files that include this signal functionality via sched.h. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

USB: serial: use variable for status

2016-07-16T10:45:39+00:00

This patch turns status in a variable read once from the URB. The long term plan is to deliver status to the callback. In addition it makes the code a bit more elegant. Signed-off-by: Oliver Neukum Signed-off-by: Johan Hovold

tty: Replace ASYNC_INITIALIZED bit and update atomically

2016-04-30T16:26:55+00:00

Replace ASYNC_INITIALIZED bit in the tty_port::flags field with TTY_PORT_INITIALIZED bit in the tty_port::iflags field. Introduce helpers tty_port_set_initialized() and tty_port_initialized() to abstract atomic bit ops. Note: the transforms for test_and_set_bit() and test_and_clear_bit() are unnecessary as the state transitions are already mutually exclusive; the tty lock prevents concurrent open/close/hangup. Signed-off-by: Peter Hurley Signed-off-by: Greg Kroah-Hartman

USB: serial: fix infinite wait_until_sent timeout

2015-03-07T02:44:14+00:00

Make sure to handle an infinite timeout (0). Note that wait_until_sent is currently never called with a 0-timeout argument due to a bug in tty_wait_until_sent. Fixes: dcf010503966 ("USB: serial: add generic wait_until_sent implementation") Cc: stable # v3.10 Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

usb: serial: handle -ENODEV quietly in generic_submit_read_urb

2015-01-12T09:23:54+00:00

If a USB serial device (e.g. /dev/ttyUSB0) with an active program is unplugged, an -ENODEV (19) error will be produced after it gives up trying to resubmit a read. usb_serial_generic_submit_read_urb - usb_submit_urb failed: -19 Add -ENODEV as one of the permanent errors along with -EPERM that usb_serial_generic_submit_read_urb() handles quietly without an error. Signed-off-by: Jeremiah Mahler Signed-off-by: Johan Hovold

usb: serial: silence all non-critical read errors

2015-01-12T09:23:35+00:00

If a USB serial device is unplugged while there is an active program using the device it may spam the logs with -EPROTO (71) messages as it attempts to retry. Most serial usb drivers (metro-usb, pl2303, mos7840, ...) only output these messages for debugging. The generic driver treats these as errors. Change the default output for the generic serial driver from error to debug to silence these non-critical errors. Signed-off-by: Jeremiah Mahler Signed-off-by: Johan Hovold

USB: serial: add missing braces

2014-03-12T19:44:50+00:00

Add missing braces to conditional branches and one loop in usb-serial core and generic implementation. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: continue to write on errors

2014-03-12T19:44:49+00:00

Do not discard buffered data and make sure to try to resubmit the write urbs on errors. Currently a recoverable error would lead to more data than necessary being dropped. Also upgrade error messages from debug to error log level. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: continue to read on errors

2014-03-12T19:44:49+00:00

Make sure to try to resubmit the read urb on errors. Currently a recoverable error would lead to reduced throughput as only one urb will be used until the port is closed and reopened (or resumed or unthrottled). Also upgrade error messages from debug to error log level. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: serial: fix write memory-allocation flag

2013-11-25T16:39:40+00:00

Fix regression introduced by commit 818f60365a29 ("USB: serial: add memory flags to usb_serial_generic_write_start"), which incorrectly used GFP_KERNEL in write(), which must not not sleep. Reported-by: Dave Jones Tested-by: Dave Jones Cc: Dave Jones Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman