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Message-ID: <20070811230855.GA8907@stusta.de> Date: Sun, 12 Aug 2007 01:08:55 +0200 From: Adrian Bunk <bunk@...sta.de> To: Michael Buesch <mb@...sch.de> Cc: Adrian Bunk <bunk@...nel.org>, Johannes Berg <johannes@...solutions.net>, John Linville <linville@...driver.com>, Andrew Morton <akpm@...ux-foundation.org>, Linux Netdev List <netdev@...r.kernel.org> Subject: [RFC: -mm patch] improve the SSB dependencies On Sat, Aug 11, 2007 at 04:42:39PM +0200, Michael Buesch wrote: > On Saturday 11 August 2007 16:30:02 Adrian Bunk wrote: > > And offering more options than required or manually sending users into > > other menus are bad thing for your users. > > Breaking compilations are as bad. > So, does your example actually work in practice and not only > in theory, too? My select stuff should have worked in theory, too. > But it broke, for whatever reasons on whatever weird setups. > > We somehow are in an endless loop here: > > loop: > implement it with select > people complain select it bad and suggest to implement it with depends on > implement it with depends on > either > users don't find it anymore > users complain > or > it needs way to tell the user what to select first > developers complain > goto loop > > ;) It's your fault that you base your work on an algorithm lacking the essential steps fix it properly goto out ;-) More seriously, below is a patch doing what I have in mind. > Greetings Michael. cu Adrian <-- snip --> This patch adds *_POSSIBLE helper variables for all SSB* variables that get select'ed. They indicate whether this variable can be select'ed, IOW: whether it's dependencies are fulfilled. Usage in drivers: If you need SSB support: config FOO tristate "foo" depends on SSB_POSSIBLE select SSB If you need SSB_BAZ support: config BAR tristate "bar" depends on SSB_BAZ_POSSIBLE select SSB select SSB_BAZ If your driver needs SSB and has optional functionality requiring SSB_BAZ: config FOOBAR tristate "foobar depends on SSB_POSSIBLE select SSB # due to being "bool" this suboption shouldn't directly select SSB # SSB is already select'ed by FOOBAR config FOOBAR_BAZ bool "baz support in foobar" depends on FOOBAR && SSB_BAZ_POSSIBLE select SSB_BAZ After this patch, SSB_BAZ can be one of: - SSB_PCIHOST - SSB_DRIVER_PCICORE - SSB_PCMCIAHOST - SSB_DEBUG Additional changes in this patch: - small help text changes - B44_PCI is no longer usr visible (automatically enabled when possible) - let SSB_SILENT depend on EMBEDDED (unless you are in a very space restricted environment you don't need to enable it) - make the following options no longer user visible (they are select'ed when required): - SSB_PCIHOST - SSB_DRIVER_PCICORE - SSB_PCMCIAHOST Signed-off-by: Adrian Bunk <bunk@...nel.org> --- drivers/net/Kconfig | 12 --- drivers/net/wireless/bcm43xx-mac80211/Kconfig | 10 +- drivers/ssb/Kconfig | 72 ++++++++++-------- drivers/usb/host/Kconfig | 4 - 4 files changed, 51 insertions(+), 47 deletions(-) 6ed573214282b96e7714b33b89a7221c01efbb86 diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index cea1979..a4f0c2f 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -1435,6 +1435,7 @@ config APRICOT config B44 tristate "Broadcom 440x/47xx ethernet support" depends on HAS_IOMEM + depends on SSB_POSSIBLE select SSB select MII help @@ -1452,17 +1453,10 @@ config B44 called b44. config B44_PCI - bool "Broadcom 440x PCI device support" - depends on B44 && NET_PCI - select SSB_PCIHOST + bool + depends on B44 && SSB_DRIVER_PCICORE_POSSIBLE select SSB_DRIVER_PCICORE default y - help - Support for Broadcom 440x PCI devices. - - Say Y, unless you know what you are doing. - If you say N here I will _not_ listen to your - bugreports! config FORCEDETH tristate "nForce Ethernet support" diff --git a/drivers/net/wireless/bcm43xx-mac80211/Kconfig b/drivers/net/wireless/bcm43xx-mac80211/Kconfig index 8f9df0e..8af8535 100644 --- a/drivers/net/wireless/bcm43xx-mac80211/Kconfig +++ b/drivers/net/wireless/bcm43xx-mac80211/Kconfig @@ -1,6 +1,6 @@ config BCM43XX_MAC80211 tristate "Broadcom BCM43xx wireless support (mac80211 stack)" - depends on MAC80211 && WLAN_80211 && EXPERIMENTAL + depends on MAC80211 && WLAN_80211 && SSB_POSSIBLE && EXPERIMENTAL select FW_LOADER select SSB select HW_RANDOM @@ -10,8 +10,8 @@ config BCM43XX_MAC80211 config BCM43XX_MAC80211_PCI bool "BCM43xx PCI device support" - depends on BCM43XX_MAC80211 && PCI - select SSB_PCIHOST + depends on BCM43XX_MAC80211 + depends on SSB_DRIVER_PCICORE_POSSIBLE select SSB_DRIVER_PCICORE default y ---help--- @@ -24,7 +24,7 @@ config BCM43XX_MAC80211_PCI config BCM43XX_MAC80211_PCMCIA bool "BCM43xx PCMCIA device support" - depends on BCM43XX_MAC80211 && PCMCIA + depends on BCM43XX_MAC80211 && SSB_PCMCIAHOST_POSSIBLE select SSB_PCMCIAHOST ---help--- Broadcom 43xx PCMCIA device support. @@ -45,7 +45,7 @@ config BCM43XX_MAC80211_PCMCIA config BCM43XX_MAC80211_DEBUG bool "Broadcom BCM43xx debugging (RECOMMENDED)" depends on BCM43XX_MAC80211 - select SSB_DEBUG if !SSB_SILENT + select SSB_DEBUG if SSB_DEBUG_POSSIBLE default y ---help--- Broadcom 43xx debugging messages. diff --git a/drivers/ssb/Kconfig b/drivers/ssb/Kconfig index 094703c..366c888 100644 --- a/drivers/ssb/Kconfig +++ b/drivers/ssb/Kconfig @@ -1,37 +1,42 @@ menu "Sonics Silicon Backplane" +config SSB_POSSIBLE + bool + depends on EXPERIMENTAL && HAS_IOMEM + default y + config SSB tristate "Sonics Silicon Backplane support" - depends on EXPERIMENTAL && HAS_IOMEM + depends on SSB_POSSIBLE help - Support for the Sonics Silicon Backplane bus + Support for the Sonics Silicon Backplane bus. + You only need to enable this option if you are + configuring a kernel for an embedded system with + this bus. - The module will be called ssb + The module will be called ssb. - If unsure, say M + If unsure, say N. -config SSB_PCIHOST - bool "Support for SSB on PCI-bus host" - depends on SSB && PCI +config SSB_PCIHOST_POSSIBLE + bool + depends on SSB_POSSIBLE && PCI default y - help - Support for a Sonics Silicon Backplane on top - of a PCI device. - If unsure, say Y +config SSB_PCIHOST + bool -config SSB_PCMCIAHOST - bool "Support for SSB on PCMCIA-bus host" - depends on SSB && PCMCIA - help - Support for a Sonics Silicon Backplane on top - of a PCMCIA device. +config SSB_PCMCIAHOST_POSSIBLE + bool + depends on SSB_POSSIBLE && PCMCIA + default y - If unsure, say N +config SSB_PCMCIAHOST + bool config SSB_SILENT bool "No SSB kernel messages" - depends on SSB + depends on SSB && EMBEDDED help This option turns off all Sonics Silicon Backplane printks. Note that you won't be able to identify problems, once @@ -39,30 +44,35 @@ config SSB_SILENT This might only be desired for production kernels on embedded devices to reduce the kernel size. - Say N + If unsure, say N. + +config SSB_DEBUG_POSSIBLE + bool + depends on SSB && !SSB_SILENT + default y config SSB_DEBUG bool "SSB debugging" - depends on SSB && !SSB_SILENT + depends on SSB_DEBUG_POSSIBLE help This turns on additional runtime checks and debugging messages. Turn this on for SSB troubleshooting. - If unsure, say N + If unsure, say N. config SSB_SERIAL bool depends on SSB # ChipCommon and ExtIf serial support routines. -config SSB_DRIVER_PCICORE - bool "SSB PCI core driver" - depends on SSB && SSB_PCIHOST - help - Driver for the Sonics Silicon Backplane attached - Broadcom PCI core. +config SSB_DRIVER_PCICORE_POSSIBLE + bool + depends on SSB_PCIHOST_POSSIBLE + default y - If unsure, say Y +config SSB_DRIVER_PCICORE + bool + select SSB_PCIHOST config SSB_PCICORE_HOSTMODE bool "Hostmode support for SSB PCI core" @@ -78,7 +88,7 @@ config SSB_DRIVER_MIPS Driver for the Sonics Silicon Backplane attached Broadcom MIPS core. - If unsure, say N + If unsure, say N. config SSB_DRIVER_EXTIF bool "SSB Broadcom EXTIF core driver" @@ -87,6 +97,6 @@ config SSB_DRIVER_EXTIF Driver for the Sonics Silicon Backplane attached Broadcom EXTIF core. - If unsure, say N + If unsure, say N. endmenu diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index dc3b7fe..d7f5328 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -101,6 +101,7 @@ config USB_OHCI_HCD depends on USB && USB_ARCH_HAS_OHCI select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 select I2C if ARCH_PNX4008 + select SSB if USB_OHCI_HCD_SSB ---help--- The Open Host Controller Interface (OHCI) is a standard for accessing USB 1.1 host controller hardware. It does more in hardware than Intel's @@ -156,8 +157,7 @@ config USB_OHCI_HCD_PCI config USB_OHCI_HCD_SSB bool "OHCI support for the Broadcom SSB OHCI core (embedded systems only)" - depends on USB_OHCI_HCD && ((USB_OHCI_HCD=m && SSB) || (USB_OHCI_HCD=y && SSB=y)) && EXPERIMENTAL - default n + depends on USB_OHCI_HCD && SSB_POSSIBLE && EXPERIMENTAL ---help--- Support for the Sonics Silicon Backplane (SSB) attached Broadcom USB OHCI core. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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