Re: [RFC,PATCH] Cleanup PC parallel port Kconfig
From: Russell King - ARM Linux <hidden>
Date: 2011-06-15 07:47:50
Also in:
linux-alpha, linux-arch, linux-arm-kernel, linux-m68k, linux-mips
On Tue, Jun 14, 2011 at 09:30:47PM -0700, H. Peter Anvin wrote:
On 06/14/2011 02:33 PM, Arnd Bergmann wrote:quoted
quoted
Why on earth restrict it like that? It's just a device driver, like more or less any other device driver...I'd say any other classic ISA/PC driver, including floppy, gameport or serial-8250. One problem with these is that we never fully worked out the dependencies for these, which we probably should. CONFIG_ISA generally means ISA add-on cards, but that might not be enabled for platforms that have a pc-parport but no ISA slots.OK, serial-8250 is clearly just plain wrong, since the 8250 series UARTs are ubiquitous across just about every platform. Floppy is special (in the short bus sense), since it is closely tied to ISA DMA. Conditionalizing this on ISA DMA makes total sense.
No it doesn't. It depends on the ISA DMA API, not that the machine has ISA DMA. I have a platform which has no ISA DMA but uses the floppy driver. Please don't break it.