On 06/17/2015 02:29 AM, Paul Bolle wrote: > On Tue, 2015-06-16 at 09:31 -0700, York Sun wrote: >> COMMON_CLK in Kconfig is changed from bool to tristate so all common >> clock framework drivers can be selected by users. > > A bool to tristate change isn't needed to make it possible to set a > symbol manually. That's achieved by adding a prompt (which the patch > also does). > > This change adds a prompt to the symbol that enables the framework. But, > as far as I can see, clock drivers depending on that framework already > can be set manually. So that's another reason the above looks incorrect > to me. > > Note that the "help" of COMMON_CLK contains: > Architectures utilizing the common struct clk should select > this option. > > Does the architecture this patch targets perhaps not select COMMON_CLK? > If that's the case, it seems you should change that architecture > instead.
Paul, I did check the mechanism to select COMMON_CLK. It doesn't fit my application. But it is not in the scope of this patch. I will discuss at the end of this email. > >> --- a/drivers/clk/Kconfig >> +++ b/drivers/clk/Kconfig > >> config COMMON_CLK >> - bool >> + tristate "Common Clock" >> select HAVE_CLK_PREPARE >> select CLKDEV_LOOKUP >> select SRCU > > I told you yesterday that setting this to tristate allows over a dozen > new modules to be created. I'd be surprised if that doesn't break stuff > left and right without additional changes (which this patch lacks). Yes you did. I checked over and over and believe enabling this option doesn't break anything. By enabling it, a dozen modules are built either in the kernel, or as modules (depending on y or m). They support fix-rate clock and others. Here is what I am going to do. I will separate the Kconfig from this patch so it doesn't block this patch from going forward. I will continue exploring the correct way to enable common clock framework, for my application and for general use. York -- 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/
