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* [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies
@ 2024-04-05 11:18 Niklas Schnelle
  2024-04-05 11:18 ` [PATCH net-next 1/1] net: handle " Niklas Schnelle
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Niklas Schnelle @ 2024-04-05 11:18 UTC (permalink / raw)
  To: David S. Miller, Eric Dumazet, Paolo Abeni
  Cc: Michael Grzeschik, Marc Kleine-Budde, Vincent Mailhol, netdev,
	linux-can, intel-wired-lan, linux-hams, Arnd Bergmann,
	Heiko Carstens, linux-kernel, Niklas Schnelle

Hi networking maintainers,

This is a follow up in my ongoing effort of making inb()/outb() and
similar I/O port accessors compile-time optional. Previously I sent this
as a treewide series titled "treewide: Remove I/O port accessors for
HAS_IOPORT=n" with the latest being its 5th version[0]. With a significant
subset of patches merged I've changed over to per-subsystem series. These
series are stand alone and should be merged via the relevant tree such
that with all subsystems complete we can follow this up with the final
patch that will make the I/O port accessors compile-time optional.

The current state of the full series with changes to the remaining subsystems
and the aforementioned final patch can be found for your convenience on my
git.kernel.org tree in the has_ioport branch[1]. As for compile-time vs runtime
see Linus' reply to my first attempt[2].

Thanks,
Niklas

[0] https://lore.kernel.org/all/20230522105049.1467313-1-schnelle@linux.ibm.com/
[1] https://git.kernel.org/pub/scm/linux/kernel/git/niks/linux.git/log/?h=has_ioport
[2] https://lore.kernel.org/lkml/CAHk-=wg80je=K7madF4e7WrRNp37e3qh6y10Svhdc7O8SZ_-8g@mail.gmail.com/

Niklas Schnelle (1):
  net: handle HAS_IOPORT dependencies

 drivers/net/Kconfig                  | 2 +-
 drivers/net/arcnet/Kconfig           | 2 +-
 drivers/net/can/cc770/Kconfig        | 1 +
 drivers/net/can/sja1000/Kconfig      | 1 +
 drivers/net/ethernet/3com/Kconfig    | 4 ++--
 drivers/net/ethernet/8390/Kconfig    | 6 +++---
 drivers/net/ethernet/amd/Kconfig     | 4 ++--
 drivers/net/ethernet/fujitsu/Kconfig | 2 +-
 drivers/net/ethernet/intel/Kconfig   | 2 +-
 drivers/net/ethernet/sis/Kconfig     | 4 ++--
 drivers/net/ethernet/smsc/Kconfig    | 2 +-
 drivers/net/ethernet/ti/Kconfig      | 2 +-
 drivers/net/ethernet/via/Kconfig     | 1 +
 drivers/net/ethernet/xircom/Kconfig  | 2 +-
 drivers/net/fddi/defxx.c             | 2 +-
 drivers/net/hamradio/Kconfig         | 6 +++---
 drivers/net/wan/Kconfig              | 2 +-
 net/ax25/Kconfig                     | 2 +-
 18 files changed, 25 insertions(+), 22 deletions(-)

-- 
2.40.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH net-next 1/1] net: handle HAS_IOPORT dependencies
  2024-04-05 11:18 [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies Niklas Schnelle
@ 2024-04-05 11:18 ` Niklas Schnelle
  2024-04-05 11:21 ` [PATCH net-next 0/1] XYZ: Handle " Niklas Schnelle
  2024-04-08 11:00 ` patchwork-bot+netdevbpf
  2 siblings, 0 replies; 4+ messages in thread
From: Niklas Schnelle @ 2024-04-05 11:18 UTC (permalink / raw)
  To: David S. Miller, Eric Dumazet, Paolo Abeni
  Cc: Michael Grzeschik, Marc Kleine-Budde, Vincent Mailhol, netdev,
	linux-can, intel-wired-lan, linux-hams, Arnd Bergmann,
	Heiko Carstens, linux-kernel, Niklas Schnelle

In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time. We thus need to add HAS_IOPORT as dependency for
those drivers requiring them. For the DEFXX driver the use of I/O
ports is optional and we only need to fence specific code paths. It also
turns out that with HAS_IOPORT handled explicitly HAMRADIO does not need
the !S390 dependency and successfully builds the bpqether driver.

Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Maciej W. Rozycki <macro@orcam.me.uk>
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
Note: This patch does not depend any not-yet-mainline HAS_IOPORT changes
and may be merged via subsystem specific trees at your earliest
convenience.

 drivers/net/Kconfig                  | 2 +-
 drivers/net/arcnet/Kconfig           | 2 +-
 drivers/net/can/cc770/Kconfig        | 1 +
 drivers/net/can/sja1000/Kconfig      | 1 +
 drivers/net/ethernet/3com/Kconfig    | 4 ++--
 drivers/net/ethernet/8390/Kconfig    | 6 +++---
 drivers/net/ethernet/amd/Kconfig     | 4 ++--
 drivers/net/ethernet/fujitsu/Kconfig | 2 +-
 drivers/net/ethernet/intel/Kconfig   | 2 +-
 drivers/net/ethernet/sis/Kconfig     | 4 ++--
 drivers/net/ethernet/smsc/Kconfig    | 2 +-
 drivers/net/ethernet/ti/Kconfig      | 2 +-
 drivers/net/ethernet/via/Kconfig     | 1 +
 drivers/net/ethernet/xircom/Kconfig  | 2 +-
 drivers/net/fddi/defxx.c             | 2 +-
 drivers/net/hamradio/Kconfig         | 6 +++---
 drivers/net/wan/Kconfig              | 2 +-
 net/ax25/Kconfig                     | 2 +-
 18 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 8ca0bc223b30..82a1e77ce57a 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -507,7 +507,7 @@ source "drivers/net/ipa/Kconfig"
 
 config NET_SB1000
 	tristate "General Instruments Surfboard 1000"
-	depends on PNP
+	depends on ISA && PNP
 	help
 	  This is a driver for the General Instrument (also known as
 	  NextLevel) SURFboard 1000 internal
diff --git a/drivers/net/arcnet/Kconfig b/drivers/net/arcnet/Kconfig
index a51b9dab6d3a..d1d07a1d4fbc 100644
--- a/drivers/net/arcnet/Kconfig
+++ b/drivers/net/arcnet/Kconfig
@@ -4,7 +4,7 @@
 #
 
 menuconfig ARCNET
-	depends on NETDEVICES && (ISA || PCI || PCMCIA)
+	depends on NETDEVICES && (ISA || PCI || PCMCIA) && HAS_IOPORT
 	tristate "ARCnet support"
 	help
 	  If you have a network card of this type, say Y and check out the
diff --git a/drivers/net/can/cc770/Kconfig b/drivers/net/can/cc770/Kconfig
index 9ef1359319f0..467ef19de1c1 100644
--- a/drivers/net/can/cc770/Kconfig
+++ b/drivers/net/can/cc770/Kconfig
@@ -7,6 +7,7 @@ if CAN_CC770
 
 config CAN_CC770_ISA
 	tristate "ISA Bus based legacy CC770 driver"
+	depends on ISA
 	help
 	  This driver adds legacy support for CC770 and AN82527 chips
 	  connected to the ISA bus using I/O port, memory mapped or
diff --git a/drivers/net/can/sja1000/Kconfig b/drivers/net/can/sja1000/Kconfig
index 4b2f9cb17fc3..01168db4c106 100644
--- a/drivers/net/can/sja1000/Kconfig
+++ b/drivers/net/can/sja1000/Kconfig
@@ -87,6 +87,7 @@ config CAN_PLX_PCI
 
 config CAN_SJA1000_ISA
 	tristate "ISA Bus based legacy SJA1000 driver"
+	depends on ISA
 	help
 	  This driver adds legacy support for SJA1000 chips connected to
 	  the ISA bus using I/O port, memory mapped or indirect access.
diff --git a/drivers/net/ethernet/3com/Kconfig b/drivers/net/ethernet/3com/Kconfig
index 706bd59bf645..1fbab79e2be4 100644
--- a/drivers/net/ethernet/3com/Kconfig
+++ b/drivers/net/ethernet/3com/Kconfig
@@ -44,7 +44,7 @@ config 3C515
 
 config PCMCIA_3C574
 	tristate "3Com 3c574 PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	help
 	  Say Y here if you intend to attach a 3Com 3c574 or compatible PCMCIA
 	  (PC-card) Fast Ethernet card to your computer.
@@ -54,7 +54,7 @@ config PCMCIA_3C574
 
 config PCMCIA_3C589
 	tristate "3Com 3c589 PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	help
 	  Say Y here if you intend to attach a 3Com 3c589 or compatible PCMCIA
 	  (PC-card) Ethernet card to your computer.
diff --git a/drivers/net/ethernet/8390/Kconfig b/drivers/net/ethernet/8390/Kconfig
index a4130e643342..345f250781c6 100644
--- a/drivers/net/ethernet/8390/Kconfig
+++ b/drivers/net/ethernet/8390/Kconfig
@@ -19,7 +19,7 @@ if NET_VENDOR_8390
 
 config PCMCIA_AXNET
 	tristate "Asix AX88190 PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	help
 	  Say Y here if you intend to attach an Asix AX88190-based PCMCIA
 	  (PC-card) Fast Ethernet card to your computer.  These cards are
@@ -117,7 +117,7 @@ config NE2000
 
 config NE2K_PCI
 	tristate "PCI NE2000 and clones support (see help)"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select CRC32
 	help
 	  This driver is for NE2000 compatible PCI cards. It will not work
@@ -146,7 +146,7 @@ config APNE
 
 config PCMCIA_PCNET
 	tristate "NE2000 compatible PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	select CRC32
 	help
 	  Say Y here if you intend to attach an NE2000 compatible PCMCIA
diff --git a/drivers/net/ethernet/amd/Kconfig b/drivers/net/ethernet/amd/Kconfig
index f8cc8925161c..b39c6f3e1eda 100644
--- a/drivers/net/ethernet/amd/Kconfig
+++ b/drivers/net/ethernet/amd/Kconfig
@@ -56,7 +56,7 @@ config LANCE
 
 config PCNET32
 	tristate "AMD PCnet32 PCI support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select CRC32
 	select MII
 	help
@@ -122,7 +122,7 @@ config MVME147_NET
 
 config PCMCIA_NMCLAN
 	tristate "New Media PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	help
 	  Say Y here if you intend to attach a New Media Ethernet or LiveWire
 	  PCMCIA (PC-card) Ethernet card to your computer.
diff --git a/drivers/net/ethernet/fujitsu/Kconfig b/drivers/net/ethernet/fujitsu/Kconfig
index 0a1400cb410a..06a28bce5d27 100644
--- a/drivers/net/ethernet/fujitsu/Kconfig
+++ b/drivers/net/ethernet/fujitsu/Kconfig
@@ -18,7 +18,7 @@ if NET_VENDOR_FUJITSU
 
 config PCMCIA_FMVJ18X
 	tristate "Fujitsu FMV-J18x PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	select CRC32
 	help
 	  Say Y here if you intend to attach a Fujitsu FMV-J18x or compatible
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 639fbb12bd35..6e7901e12699 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -41,7 +41,7 @@ config E100
 
 config E1000
 	tristate "Intel(R) PRO/1000 Gigabit Ethernet support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	help
 	  This driver supports Intel(R) PRO/1000 gigabit ethernet family of
 	  adapters.  For more information on how to identify your adapter, go
diff --git a/drivers/net/ethernet/sis/Kconfig b/drivers/net/ethernet/sis/Kconfig
index 775d76d9890e..7e498bdbca73 100644
--- a/drivers/net/ethernet/sis/Kconfig
+++ b/drivers/net/ethernet/sis/Kconfig
@@ -19,7 +19,7 @@ if NET_VENDOR_SIS
 
 config SIS900
 	tristate "SiS 900/7016 PCI Fast Ethernet Adapter support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select CRC32
 	select MII
 	help
@@ -35,7 +35,7 @@ config SIS900
 
 config SIS190
 	tristate "SiS190/SiS191 gigabit ethernet support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select CRC32
 	select MII
 	help
diff --git a/drivers/net/ethernet/smsc/Kconfig b/drivers/net/ethernet/smsc/Kconfig
index 5f22a8a4d27b..13ce9086a9ca 100644
--- a/drivers/net/ethernet/smsc/Kconfig
+++ b/drivers/net/ethernet/smsc/Kconfig
@@ -54,7 +54,7 @@ config SMC91X
 
 config PCMCIA_SMC91C92
 	tristate "SMC 91Cxx PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	select CRC32
 	select MII
 	help
diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig
index 1530d13984d4..cfe9bd6b1d62 100644
--- a/drivers/net/ethernet/ti/Kconfig
+++ b/drivers/net/ethernet/ti/Kconfig
@@ -167,7 +167,7 @@ config TI_KEYSTONE_NETCP_ETHSS
 
 config TLAN
 	tristate "TI ThunderLAN support"
-	depends on (PCI || EISA)
+	depends on (PCI || EISA) && HAS_IOPORT
 	help
 	  If you have a PCI Ethernet network card based on the ThunderLAN chip
 	  which is supported by this driver, say Y here.
diff --git a/drivers/net/ethernet/via/Kconfig b/drivers/net/ethernet/via/Kconfig
index da287ef65be7..00773f5e4d7e 100644
--- a/drivers/net/ethernet/via/Kconfig
+++ b/drivers/net/ethernet/via/Kconfig
@@ -20,6 +20,7 @@ config VIA_RHINE
 	tristate "VIA Rhine support"
 	depends on PCI || (OF_IRQ && GENERIC_PCI_IOMAP)
 	depends on PCI || ARCH_VT8500 || COMPILE_TEST
+	depends on HAS_IOPORT
 	depends on HAS_DMA
 	select CRC32
 	select MII
diff --git a/drivers/net/ethernet/xircom/Kconfig b/drivers/net/ethernet/xircom/Kconfig
index 7497b9bea511..bfbdcf758afb 100644
--- a/drivers/net/ethernet/xircom/Kconfig
+++ b/drivers/net/ethernet/xircom/Kconfig
@@ -19,7 +19,7 @@ if NET_VENDOR_XIRCOM
 
 config PCMCIA_XIRC2PS
 	tristate "Xircom 16-bit PCMCIA support"
-	depends on PCMCIA
+	depends on PCMCIA && HAS_IOPORT
 	help
 	  Say Y here if you intend to attach a Xircom 16-bit PCMCIA (PC-card)
 	  Ethernet or Fast Ethernet card to your computer.
diff --git a/drivers/net/fddi/defxx.c b/drivers/net/fddi/defxx.c
index 1fef8a9b1a0f..0fbbb7286008 100644
--- a/drivers/net/fddi/defxx.c
+++ b/drivers/net/fddi/defxx.c
@@ -254,7 +254,7 @@ static const char version[] =
 #define DFX_BUS_TC(dev) 0
 #endif
 
-#if defined(CONFIG_EISA) || defined(CONFIG_PCI)
+#ifdef CONFIG_HAS_IOPORT
 #define dfx_use_mmio bp->mmio
 #else
 #define dfx_use_mmio true
diff --git a/drivers/net/hamradio/Kconfig b/drivers/net/hamradio/Kconfig
index 25b1f929c422..36a9aade9f33 100644
--- a/drivers/net/hamradio/Kconfig
+++ b/drivers/net/hamradio/Kconfig
@@ -83,7 +83,7 @@ config SCC_TRXECHO
 
 config BAYCOM_SER_FDX
 	tristate "BAYCOM ser12 fullduplex driver for AX.25"
-	depends on AX25 && !S390
+	depends on AX25 && HAS_IOPORT
 	select CRC_CCITT
 	help
 	  This is one of two drivers for Baycom style simple amateur radio
@@ -103,7 +103,7 @@ config BAYCOM_SER_FDX
 
 config BAYCOM_SER_HDX
 	tristate "BAYCOM ser12 halfduplex driver for AX.25"
-	depends on AX25 && !S390
+	depends on AX25 && HAS_IOPORT
 	select CRC_CCITT
 	help
 	  This is one of two drivers for Baycom style simple amateur radio
@@ -150,7 +150,7 @@ config BAYCOM_EPP
 
 config YAM
 	tristate "YAM driver for AX.25"
-	depends on AX25 && !S390
+	depends on AX25 && HAS_IOPORT
 	help
 	  The YAM is a modem for packet radio which connects to the serial
 	  port and includes some of the functions of a Terminal Node
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index 31ab2136cdf1..67be9857c86c 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -180,7 +180,7 @@ config C101
 
 config FARSYNC
 	tristate "FarSync T-Series support"
-	depends on HDLC && PCI
+	depends on HDLC && PCI && HAS_IOPORT
 	help
 	  Support for the FarSync T-Series X.21 (and V.35/V.24) cards by
 	  FarSite Communications Ltd.
diff --git a/net/ax25/Kconfig b/net/ax25/Kconfig
index fdb666607f10..e23a3dc14b93 100644
--- a/net/ax25/Kconfig
+++ b/net/ax25/Kconfig
@@ -4,7 +4,7 @@
 #
 
 menuconfig HAMRADIO
-	depends on NET && !S390
+	depends on NET
 	bool "Amateur Radio support"
 	help
 	  If you want to connect your Linux box to an amateur radio, answer Y
-- 
2.40.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies
  2024-04-05 11:18 [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies Niklas Schnelle
  2024-04-05 11:18 ` [PATCH net-next 1/1] net: handle " Niklas Schnelle
@ 2024-04-05 11:21 ` Niklas Schnelle
  2024-04-08 11:00 ` patchwork-bot+netdevbpf
  2 siblings, 0 replies; 4+ messages in thread
From: Niklas Schnelle @ 2024-04-05 11:21 UTC (permalink / raw)
  To: David S. Miller, Eric Dumazet, Paolo Abeni
  Cc: Michael Grzeschik, Marc Kleine-Budde, Vincent Mailhol, netdev,
	linux-can, intel-wired-lan, linux-hams, Arnd Bergmann,
	Heiko Carstens, linux-kernel

On Fri, 2024-04-05 at 13:18 +0200, Niklas Schnelle wrote:
> Hi networking maintainers,
> 
> This is a follow up in my ongoing effort of making inb()/outb() and
> similar I/O port accessors compile-time optional. Previously I sent this
> as a treewide series titled "treewide: Remove I/O port accessors for
> HAS_IOPORT=n" with the latest being its 5th version[0]. With a significant
> subset of patches merged I've changed over to per-subsystem series. These
> series are stand alone and should be merged via the relevant tree such
> that with all subsystems complete we can follow this up with the final
> patch that will make the I/O port accessors compile-time optional.
> 
> The current state of the full series with changes to the remaining subsystems
> and the aforementioned final patch can be found for your convenience on my
> git.kernel.org tree in the has_ioport branch[1]. As for compile-time vs runtime
> see Linus' reply to my first attempt[2].
> 
> Thanks,
> Niklas
> 
> [0] https://lore.kernel.org/all/20230522105049.1467313-1-schnelle@linux.ibm.com/
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/niks/linux.git/log/?h=has_ioport
> [2] https://lore.kernel.org/lkml/CAHk-=wg80je=K7madF4e7WrRNp37e3qh6y10Svhdc7O8SZ_-8g@mail.gmail.com/
> 
> Niklas Schnelle (1):
>   net: handle HAS_IOPORT dependencies
> 

Obviously the subject of the cover letter should start with "net:" ;-(

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies
  2024-04-05 11:18 [PATCH net-next 0/1] XYZ: Handle HAS_IOPORT dependencies Niklas Schnelle
  2024-04-05 11:18 ` [PATCH net-next 1/1] net: handle " Niklas Schnelle
  2024-04-05 11:21 ` [PATCH net-next 0/1] XYZ: Handle " Niklas Schnelle
@ 2024-04-08 11:00 ` patchwork-bot+netdevbpf
  2 siblings, 0 replies; 4+ messages in thread
From: patchwork-bot+netdevbpf @ 2024-04-08 11:00 UTC (permalink / raw)
  To: Niklas Schnelle
  Cc: davem, edumazet, pabeni, m.grzeschik, mkl, mailhol.vincent,
	netdev, linux-can, intel-wired-lan, linux-hams, arnd, hca,
	linux-kernel

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Fri,  5 Apr 2024 13:18:30 +0200 you wrote:
> Hi networking maintainers,
> 
> This is a follow up in my ongoing effort of making inb()/outb() and
> similar I/O port accessors compile-time optional. Previously I sent this
> as a treewide series titled "treewide: Remove I/O port accessors for
> HAS_IOPORT=n" with the latest being its 5th version[0]. With a significant
> subset of patches merged I've changed over to per-subsystem series. These
> series are stand alone and should be merged via the relevant tree such
> that with all subsystems complete we can follow this up with the final
> patch that will make the I/O port accessors compile-time optional.
> 
> [...]

Here is the summary with links:
  - [net-next,1/1] net: handle HAS_IOPORT dependencies
    https://git.kernel.org/netdev/net-next/c/a29689e60ed3

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



^ permalink raw reply	[flat|nested] 4+ messages in thread

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