On Sunday 07 December 2014 15:40:32 robert.ward...@googlemail.com wrote: > From: Rob Ward <robert.ward...@googlemail.com> > > Makes the /dev/mem device optional using the CONFIG_DEVMEM option. > > This brings /dev/mem in line with /dev/kmem so it can de disabled. > Disabling /dev/mem is preferable on devices that do not require > direct access to memory in order to improve security. This is especially > true on platforms where no restiction is placed on the areas of memory > that can be accessed(for example mips) without custom modifcations to > the kernel source. > > The implementation of this functionality declares the mem_fops structure > as __maybe_unused to eliminate the need for #ifdefs throughout the > file. > > Follow up changes are present to change CONFIG_DEVKMEM and CONFIG_DEVPORT > to use __maybe_unused. This simplifies the code and make the > implementations consistent. >
Acked-by: Arnd Bergmann <a...@arndb.de> -- 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/
