linux/drivers/staging/comedi
Ian Abbott f5f27dab6f staging: comedi: jr3_pci: cope with jiffies wraparound
commit 8ec04a4918 upstream.

The timer expiry routine `jr3_pci_poll_dev()` checks for expiry by
checking whether the absolute value of `jiffies` (stored in local
variable `now`) is greater than the expected expiry time in jiffy units.
This will fail when `jiffies` wraps around.  Also, it seems to make
sense to handle the expiry one jiffy earlier than the current test.  Use
`time_after_eq()` to check for expiry.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2017-08-26 02:14:23 +01:00
..
drivers staging: comedi: jr3_pci: cope with jiffies wraparound 2017-08-26 02:14:23 +01:00
kcomedilib Staging: comedi: kcomedilib: replace deprecated simple_strtoul() with kstrtouint() 2014-02-15 12:42:41 -08:00
comedi.h staging: comedi: remove FSF address from boilerplate text 2013-05-13 17:34:22 -04:00
comedi_buf.c staging: comedi: pass subdevice to comedi_buf_write_n_available() 2014-05-23 21:25:50 +09:00
comedi_compat32.c staging: comedi: comedi_compat32.c: fix COMEDI_CMD copy back 2015-02-24 10:01:11 +00:00
comedi_compat32.h staging: comedi: remove FSF address from boilerplate text 2013-05-13 17:34:22 -04:00
comedi_fops.c staging: comedi: fix memory leak / bad pointer freeing for chanlist 2014-11-13 11:48:53 +00:00
comedi_internal.h staging: comedi: pass subdevice to comedi_buf_is_mmapped() 2014-05-23 21:25:49 +09:00
comedi_pci.c staging: comedi: remove FSF address from boilerplate text 2013-05-13 17:34:22 -04:00
comedi_pcmcia.c staging: comedi: remove FSF address from boilerplate text 2013-05-13 17:34:22 -04:00
comedi_usb.c staging: comedi: introduce comedi_to_usb_dev() 2013-05-21 10:59:10 -07:00
comedidev.h staging: comedi: remove in_request_module 2014-05-27 11:57:31 -07:00
comedilib.h staging: comedi: comedi_bond: handle base channel for insn_bits 2013-08-26 06:41:56 -07:00
drivers.c staging: comedi: remove subdevice member of struct comedi_async 2014-05-23 21:25:51 +09:00
Kconfig staging: comedi: addi_apci_1564: add addi_watchdog dependency 2014-06-18 15:11:22 -07:00
Makefile staging: comedi: remove comedi_debug module parameter 2013-11-25 11:50:53 -08:00
proc.c Staging: comedi: proc: title block update 2014-03-19 04:41:04 +00:00
range.c Staging: comedi: range: remove unnecessary sanity check 2014-03-08 18:59:48 -08:00
TODO staging: comedi: TODO: remove item "reserve major number" 2014-05-28 14:18:11 -07:00