On Apr 14, 2011, at 5:36 PM, Nat Gurumoorthy wrote: > There are 3 different drivers that touch the it87 hardware registers. > The 3 drivers have been written independently and access the it87 hardware > registers assuming they are the only driver accessing it. This change > attempts to serialize access to the hardware by using > "request_muxed_region" macro defined by Alan Cox. Call to this macro > will hold off the requestor if the resource is currently busy. > The use of the above macro makes it possible to get rid of > spinlocks in it8712f_wdt.c and it87_wdt.c watchdog drivers. > This also greatly simplifies the implementation of it87_wdt.c driver. > > 01 - Changes to it87 watchdog driver to use "request_muxed_region" > drivers/watchdog/it8712f_wdt.c > drivers/watchdog/it87_wdt.c > > 02 - Chages to hwmon it87 driver to use "request_muxed_region" > drivers/hwmon/it87.c > > drivers/hwmon/it87.c | 30 +++++++++++++- > drivers/watchdog/it8712f_wdt.c | 50 +++++++++++++++++++++--- > drivers/watchdog/it87_wdt.c | 80 +++++++++++++++++++++------------------ > 3 files changed, 113 insertions(+), 47 deletions(-) FYI, $ head -n 4 drivers/media/rc/ite-cir.c /* * Driver for ITE Tech Inc. IT8712F/IT8512 CIR * * Copyright (C) 2010 Juan Jesús García de Soria <skandalfo@xxxxxxxxx> -- Jarod Wilson jarod@xxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
