drivers/char/efirtc.c - efi_rtc_open\ efi_rtc_close

Greg KH gregkh at
Mon Jan 21 05:28:53 EST 2019

On Mon, Jan 21, 2019 at 03:40:31PM +0530, Muni Sekhar wrote:
> Hello All,
> The drivers/char/efirtc.c file has ‘struct’ & ‘struct
> file_operations.close’ functions efi_rtc_open()\ efi_rtc_close() does
> nothing, just returns ‘0’.
> So it accept multiple open files at the same time. If we don’t define these
> empty function, still driver accepts multiple open() calls at the same
> time, right?
> If so I’d like to know what is the advantage of keeping these function
> which does nothing instead of removing it from driver?

There is no advantage at all, those functions can be removed safely, no
need to have them at all.  Care to send a patch for this?


greg k-h

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