On Thu, Nov 29, 2012 at 6:25 PM, Russell King - ARM Linux <li...@arm.linux.org.uk> wrote: > On Wed, Nov 28, 2012 at 09:21:07PM -0500, Chao Xie wrote: >> The original sa1100_rtc_open/sa1100_rtc_release will be called >> when the /dev/rtc0 is opened or closed. >> In fact, these two functions will enable/disable the clock, and >> register/unregister the irqs. >> User application will use /dev/rtc0 to read the rtc time or set >> the alarm. The rtc should still run indepent of open/close the >> rtc device. >> So only enable clock and register the irqs when probe the device, >> and disable clock and unregister the irqs when remove the device. > > NAK. I don't think you properly understand what's going on here if you > think moving the entire open and release functions into the probe and > remove functions is the right thing to do.
Since PXA27x & PXA3xx supports dual rtc device at the same time, user could choose use either of rtc at run time. Then clk & irq are setup in open(). Chao, So you shouldn't remove them into probe(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
