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Date: Fri, 15 Dec 2023 08:11:51 +0000 From: "Wu, Wentong" <wentong.wu@...el.com> To: Arnd Bergmann <arnd@...nel.org> CC: "Winkler, Tomas" <tomas.winkler@...el.com>, Arnd Bergmann <arnd@...db.de>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Sakari Ailus <sakari.ailus@...ux.intel.com>, "andriy.shevchenko@...ux.intel.com" <andriy.shevchenko@...ux.intel.com>, "Usyskin, Alexander" <alexander.usyskin@...el.com>, "Teres Alexis, Alan Previn" <alan.previn.teres.alexis@...el.com>, "Ceraolo Spurio, Daniele" <daniele.ceraolospurio@...el.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: RE: [PATCH 2/2] mei: rework Kconfig dependencies > From: Arnd Bergmann <arnd@...nel.org> Sent: Friday, December 15, 2023 2:40 AM > > From: Arnd Bergmann <arnd@...db.de> > > The dependencies in the mei framework are inconsistent, with some symbols > using 'select INTEL_MEI' to force it being enabled and others using 'depends on > INTEL_MEI'. > > In general, one should not select user-visible symbols, so change all of these to > normal dependencies, but change the default on INTEL_MEI to be enabled when > building a kernel for an Intel CPU with ME or a generic > x86 kernel. > > Having consistent dependencies makes the 'menuconfig' listing more readable > by using proper indentation. > > A large if/endif block is just a simpler syntax than repeating the dependencies for > each symbol. Yes, I agree it will make future changes more easier. Reviewed-by: Wentong Wu <wentong.wu@...el.com> > > Signed-off-by: Arnd Bergmann <arnd@...db.de> > --- > This does not fix a bug, but seems like a sensible cleanup to me, making the logic > less error-prone for future changes. Feel free to just take the first patch and > ignore this one if I missed an important reason for the original variant, or if you > prefer a different method. > --- > drivers/misc/mei/Kconfig | 14 ++++++-------- > drivers/misc/mei/gsc_proxy/Kconfig | 2 +- > drivers/misc/mei/hdcp/Kconfig | 2 +- > drivers/misc/mei/pxp/Kconfig | 2 +- > 4 files changed, 9 insertions(+), 11 deletions(-) > > diff --git a/drivers/misc/mei/Kconfig b/drivers/misc/mei/Kconfig index > 1e28ca23a74a..67d9391f1855 100644 > --- a/drivers/misc/mei/Kconfig > +++ b/drivers/misc/mei/Kconfig > @@ -3,6 +3,7 @@ > config INTEL_MEI > tristate "Intel Management Engine Interface" > depends on X86 && PCI > + default GENERIC_CPU || MCORE2 || MATOM || X86_GENERIC > help > The Intel Management Engine (Intel ME) provides Manageability, > Security and Media services for system containing Intel chipsets. > @@ -11,10 +12,11 @@ config INTEL_MEI > For more information see > <https://software.intel.com/en-us/manageability/> > > +if INTEL_MEI > + > config INTEL_MEI_ME > tristate "ME Enabled Intel Chipsets" > - select INTEL_MEI > - depends on X86 && PCI > + default y > help > MEI support for ME Enabled Intel chipsets. > > @@ -38,8 +40,6 @@ config INTEL_MEI_ME > > config INTEL_MEI_TXE > tristate "Intel Trusted Execution Environment with ME Interface" > - select INTEL_MEI > - depends on X86 && PCI > help > MEI Support for Trusted Execution Environment device on Intel SoCs > > @@ -48,9 +48,7 @@ config INTEL_MEI_TXE > > config INTEL_MEI_GSC > tristate "Intel MEI GSC embedded device" > - depends on INTEL_MEI > depends on INTEL_MEI_ME > - depends on X86 && PCI > depends on DRM_I915 > help > Intel auxiliary driver for GSC devices embedded in Intel graphics devices. > @@ -62,7 +60,6 @@ config INTEL_MEI_GSC > > config INTEL_MEI_VSC_HW > tristate "Intel visual sensing controller device transport driver" > - depends on INTEL_MEI > depends on ACPI && SPI > depends on GPIOLIB || COMPILE_TEST > help > @@ -75,7 +72,6 @@ config INTEL_MEI_VSC_HW config INTEL_MEI_VSC > tristate "Intel visual sensing controller device with ME interface" > depends on INTEL_MEI_VSC_HW > - depends on INTEL_MEI > help > Intel MEI over SPI driver for Intel visual sensing controller > (IVSC) device embedded in IA platform. It supports camera sharing @@ > -88,3 +84,5 @@ config INTEL_MEI_VSC source > "drivers/misc/mei/hdcp/Kconfig" > source "drivers/misc/mei/pxp/Kconfig" > source "drivers/misc/mei/gsc_proxy/Kconfig" > + > +endif > diff --git a/drivers/misc/mei/gsc_proxy/Kconfig > b/drivers/misc/mei/gsc_proxy/Kconfig > index 5f68d9f3d691..ac78b9d1eccd 100644 > --- a/drivers/misc/mei/gsc_proxy/Kconfig > +++ b/drivers/misc/mei/gsc_proxy/Kconfig > @@ -3,7 +3,7 @@ > # > config INTEL_MEI_GSC_PROXY > tristate "Intel GSC Proxy services of ME Interface" > - select INTEL_MEI_ME > + depends on INTEL_MEI_ME > depends on DRM_I915 > help > MEI Support for GSC Proxy Services on Intel platforms. > diff --git a/drivers/misc/mei/hdcp/Kconfig b/drivers/misc/mei/hdcp/Kconfig > index 54e1c9526909..9be312ec798d 100644 > --- a/drivers/misc/mei/hdcp/Kconfig > +++ b/drivers/misc/mei/hdcp/Kconfig > @@ -3,7 +3,7 @@ > # > config INTEL_MEI_HDCP > tristate "Intel HDCP2.2 services of ME Interface" > - select INTEL_MEI_ME > + depends on INTEL_MEI_ME > depends on DRM_I915 > help > MEI Support for HDCP2.2 Services on Intel platforms. > diff --git a/drivers/misc/mei/pxp/Kconfig b/drivers/misc/mei/pxp/Kconfig index > 4029b96afc04..838eae556dd4 100644 > --- a/drivers/misc/mei/pxp/Kconfig > +++ b/drivers/misc/mei/pxp/Kconfig > @@ -4,7 +4,7 @@ > # > config INTEL_MEI_PXP > tristate "Intel PXP services of ME Interface" > - select INTEL_MEI_ME > + depends on INTEL_MEI_ME > depends on DRM_I915 > help > MEI Support for PXP Services on Intel platforms. > -- > 2.39.2 Thanks Wentong
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