In `comedi_set_hw_dev()`, if there is no change to `dev->hw_dev` (and it is not `NULL`), don't bother putting and getting the device.
Signed-off-by: Ian Abbott <[email protected]> --- drivers/staging/comedi/comedidev.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index cb67a5c..100ea0b 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -436,9 +436,10 @@ into comedi's buffer */ static inline void comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev) { + if (dev->hw_dev == hw_dev) + return; if (dev->hw_dev) put_device(dev->hw_dev); - dev->hw_dev = hw_dev; if (dev->hw_dev) { dev->hw_dev = get_device(dev->hw_dev); -- 1.7.12 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
