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Message-ID: <Yts4BjEk6VQvOOdg@antec>
Date: Sat, 23 Jul 2022 08:51:34 +0900
From: Stafford Horne <shorne@...il.com>
To: Bjorn Helgaas <helgaas@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Arnd Bergmann <arnd@...db.de>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Pierre Morel <pmorel@...ux.ibm.com>,
"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
Christoph Hellwig <hch@....de>,
Richard Henderson <richard.henderson@...aro.org>,
Ivan Kokshaysky <ink@...assic.park.msu.ru>,
Matt Turner <mattst88@...il.com>,
Russell King <linux@...linux.org.uk>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
Helge Deller <deller@....de>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Yoshinori Sato <ysato@...rs.sourceforge.jp>,
Rich Felker <dalias@...c.org>,
"David S. Miller" <davem@...emloft.net>,
Richard Weinberger <richard@....at>,
Anton Ivanov <anton.ivanov@...bridgegreys.com>,
Johannes Berg <johannes@...solutions.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>, Chris Zankel <chris@...kel.net>,
Max Filippov <jcmvbkbc@...il.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Sergio Paracuellos <sergio.paracuellos@...il.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Tiezhu Yang <yangtiezhu@...ngson.cn>,
Nick Child <nick.child@....com>,
Niklas Schnelle <schnelle@...ux.ibm.com>,
Matthew Rosato <mjrosato@...ux.ibm.com>,
Kees Cook <keescook@...omium.org>,
"Gustavo A. R. Silva" <gustavoars@...nel.org>,
linux-alpha@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-csky@...r.kernel.org, linux-ia64@...r.kernel.org,
linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-um@...ts.infradead.org, linux-acpi@...r.kernel.org,
linux-pci@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH v6 1/4] PCI: Remove pci_get_legacy_ide_irq and
asm-generic/pci.h
On Fri, Jul 22, 2022 at 06:38:21PM -0500, Bjorn Helgaas wrote:
> On Sat, Jul 23, 2022 at 06:49:41AM +0900, Stafford Horne wrote:
> > The definition of the pci header function pci_get_legacy_ide_irq is only
> > used in platforms that support PNP. So many of the architecutres where
> > it is defined do not use it. This also means we can remove
> > asm-generic/pci.h as all it provides is a definition of
> > pci_get_legacy_ide_irq.
> >
> > Where referenced, replace the usage of pci_get_legacy_ide_irq with the
> > libata.h macros ATA_PRIMARY_IRQ and ATA_SECONDARY_IRQ which provide the
> > same functionality. This allows removing pci_get_legacy_ide_irq from
> > headers where it is no longer used.
> >
> > Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> > Acked-by: Pierre Morel <pmorel@...ux.ibm.com>
> > Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> > Reviewed-by: Christoph Hellwig <hch@....de>
> > Co-developed-by: Arnd Bergmann <arnd@...db.de>
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> > Signed-off-by: Stafford Horne <shorne@...il.com>
>
> I applied all 4 patches in this series to pci/header-cleanup-immutable
> for v5.20.
>
> https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/header-cleanup-immutable
Thank you,
Sorry, the 0/4 cover letter is here.
https://lore.kernel.org/lkml/20220722214944.831438-1-shorne@gmail.com/
I hadn't had you CC'd as I was using ./script/get_maintainer.pl to maintain the
CCs. Maybe patch MAINTAINERS like the following could help keep you CC'd on all
things PCI? But maybe that would be too much, never-the-less I'll make sure you
are CC'd on pci related patches including cover-letters in the future.
diff --git a/MAINTAINERS b/MAINTAINERS
index f313862b2929..b64cd6bbb34f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15552,6 +15552,8 @@ F: include/linux/of_pci.h
F: include/linux/pci*
F: include/uapi/linux/pci*
F: lib/pci*
+K: pci
+N: pci
Palmer, we now have a branch you can use for your RISC-V for-next. Does, that
work?
-Stafford
> > ---
> > arch/alpha/include/asm/pci.h | 6 ------
> > arch/arm/include/asm/pci.h | 5 -----
> > arch/arm64/include/asm/pci.h | 6 ------
> > arch/csky/include/asm/pci.h | 6 ------
> > arch/ia64/include/asm/pci.h | 6 ------
> > arch/m68k/include/asm/pci.h | 2 --
> > arch/mips/include/asm/pci.h | 6 ------
> > arch/parisc/include/asm/pci.h | 5 -----
> > arch/powerpc/include/asm/pci.h | 1 -
> > arch/riscv/include/asm/pci.h | 6 ------
> > arch/s390/include/asm/pci.h | 1 -
> > arch/sh/include/asm/pci.h | 6 ------
> > arch/sparc/include/asm/pci.h | 9 ---------
> > arch/um/include/asm/pci.h | 8 --------
> > arch/x86/include/asm/pci.h | 3 ---
> > arch/xtensa/include/asm/pci.h | 3 ---
> > drivers/pnp/resource.c | 5 +++--
> > include/asm-generic/pci.h | 17 -----------------
> > 18 files changed, 3 insertions(+), 98 deletions(-)
> > delete mode 100644 include/asm-generic/pci.h
> >
> > diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h
> > index cf6bc1e64d66..6312656279d7 100644
> > --- a/arch/alpha/include/asm/pci.h
> > +++ b/arch/alpha/include/asm/pci.h
> > @@ -56,12 +56,6 @@ struct pci_controller {
> >
> > /* IOMMU controls. */
> >
> > -/* TODO: integrate with include/asm-generic/pci.h ? */
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -
> > #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
> >
> > static inline int pci_proc_domain(struct pci_bus *bus)
> > diff --git a/arch/arm/include/asm/pci.h b/arch/arm/include/asm/pci.h
> > index 68e6f25784a4..5916b88d4c94 100644
> > --- a/arch/arm/include/asm/pci.h
> > +++ b/arch/arm/include/asm/pci.h
> > @@ -22,11 +22,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> > #define HAVE_PCI_MMAP
> > #define ARCH_GENERIC_PCI_MMAP_RESOURCE
> >
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -
> > extern void pcibios_report_status(unsigned int status_mask, int warn);
> >
> > #endif /* __KERNEL__ */
> > diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h
> > index b33ca260e3c9..0aebc3488c32 100644
> > --- a/arch/arm64/include/asm/pci.h
> > +++ b/arch/arm64/include/asm/pci.h
> > @@ -23,12 +23,6 @@
> > extern int isa_dma_bridge_buggy;
> >
> > #ifdef CONFIG_PCI
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - /* no legacy IRQ on arm64 */
> > - return -ENODEV;
> > -}
> > -
> > static inline int pci_proc_domain(struct pci_bus *bus)
> > {
> > return 1;
> > diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
> > index ebc765b1f78b..0535f1aaae38 100644
> > --- a/arch/csky/include/asm/pci.h
> > +++ b/arch/csky/include/asm/pci.h
> > @@ -18,12 +18,6 @@
> > extern int isa_dma_bridge_buggy;
> >
> > #ifdef CONFIG_PCI
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - /* no legacy IRQ on csky */
> > - return -ENODEV;
> > -}
> > -
> > static inline int pci_proc_domain(struct pci_bus *bus)
> > {
> > /* always show the domain in /proc */
> > diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
> > index 8c163d1d0189..fa8f545c24c9 100644
> > --- a/arch/ia64/include/asm/pci.h
> > +++ b/arch/ia64/include/asm/pci.h
> > @@ -63,10 +63,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> > return (pci_domain_nr(bus) != 0);
> > }
> >
> > -#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
> > -}
> > -
> > #endif /* _ASM_IA64_PCI_H */
> > diff --git a/arch/m68k/include/asm/pci.h b/arch/m68k/include/asm/pci.h
> > index 5a4bc223743b..ccdfa0dc8413 100644
> > --- a/arch/m68k/include/asm/pci.h
> > +++ b/arch/m68k/include/asm/pci.h
> > @@ -2,8 +2,6 @@
> > #ifndef _ASM_M68K_PCI_H
> > #define _ASM_M68K_PCI_H
> >
> > -#include <asm-generic/pci.h>
> > -
> > #define pcibios_assign_all_busses() 1
> >
> > #define PCIBIOS_MIN_IO 0x00000100
> > diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
> > index 9ffc8192adae..3fd6e22c108b 100644
> > --- a/arch/mips/include/asm/pci.h
> > +++ b/arch/mips/include/asm/pci.h
> > @@ -139,10 +139,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> > /* Do platform specific device initialization at pci_enable_device() time */
> > extern int pcibios_plat_dev_init(struct pci_dev *dev);
> >
> > -/* Chances are this interrupt is wired PC-style ... */
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -
> > #endif /* _ASM_PCI_H */
> > diff --git a/arch/parisc/include/asm/pci.h b/arch/parisc/include/asm/pci.h
> > index f14465b84de4..127ed5021ae3 100644
> > --- a/arch/parisc/include/asm/pci.h
> > +++ b/arch/parisc/include/asm/pci.h
> > @@ -162,11 +162,6 @@ extern void pcibios_init_bridge(struct pci_dev *);
> > #define PCIBIOS_MIN_IO 0x10
> > #define PCIBIOS_MIN_MEM 0x1000 /* NBPG - but pci/setup-res.c dies */
> >
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -
> > #define HAVE_PCI_MMAP
> > #define ARCH_GENERIC_PCI_MMAP_RESOURCE
> >
> > diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
> > index 915d6ee4b40a..f9da506751bb 100644
> > --- a/arch/powerpc/include/asm/pci.h
> > +++ b/arch/powerpc/include/asm/pci.h
> > @@ -39,7 +39,6 @@
> > #define pcibios_assign_all_busses() \
> > (pci_has_flag(PCI_REASSIGN_ALL_BUS))
> >
> > -#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
> > static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > {
> > if (ppc_md.pci_get_legacy_ide_irq)
> > diff --git a/arch/riscv/include/asm/pci.h b/arch/riscv/include/asm/pci.h
> > index 7fd52a30e605..a7b8f0d0df7f 100644
> > --- a/arch/riscv/include/asm/pci.h
> > +++ b/arch/riscv/include/asm/pci.h
> > @@ -23,12 +23,6 @@
> > extern int isa_dma_bridge_buggy;
> >
> > #ifdef CONFIG_PCI
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - /* no legacy IRQ on risc-v */
> > - return -ENODEV;
> > -}
> > -
> > static inline int pci_proc_domain(struct pci_bus *bus)
> > {
> > /* always show the domain in /proc */
> > diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> > index fdb9745ee998..5889ddcbc374 100644
> > --- a/arch/s390/include/asm/pci.h
> > +++ b/arch/s390/include/asm/pci.h
> > @@ -6,7 +6,6 @@
> > #include <linux/mutex.h>
> > #include <linux/iommu.h>
> > #include <linux/pci_hotplug.h>
> > -#include <asm-generic/pci.h>
> > #include <asm/pci_clp.h>
> > #include <asm/pci_debug.h>
> > #include <asm/sclp.h>
> > diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
> > index ad22e88c6657..54c30126ea17 100644
> > --- a/arch/sh/include/asm/pci.h
> > +++ b/arch/sh/include/asm/pci.h
> > @@ -88,10 +88,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> > return hose->need_domain_info;
> > }
> >
> > -/* Chances are this interrupt is wired PC-style ... */
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -
> > #endif /* __ASM_SH_PCI_H */
> > diff --git a/arch/sparc/include/asm/pci.h b/arch/sparc/include/asm/pci.h
> > index 4deddf430e5d..0c58f65bd172 100644
> > --- a/arch/sparc/include/asm/pci.h
> > +++ b/arch/sparc/include/asm/pci.h
> > @@ -40,13 +40,4 @@ static inline int pci_proc_domain(struct pci_bus *bus)
> > #define get_pci_unmapped_area get_fb_unmapped_area
> > #endif /* CONFIG_SPARC64 */
> >
> > -#if defined(CONFIG_SPARC64) || defined(CONFIG_LEON_PCI)
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return PCI_IRQ_NONE;
> > -}
> > -#else
> > -#include <asm-generic/pci.h>
> > -#endif
> > -
> > #endif /* ___ASM_SPARC_PCI_H */
> > diff --git a/arch/um/include/asm/pci.h b/arch/um/include/asm/pci.h
> > index da13fd5519ef..26b96c02ef61 100644
> > --- a/arch/um/include/asm/pci.h
> > +++ b/arch/um/include/asm/pci.h
> > @@ -11,14 +11,6 @@
> >
> > extern int isa_dma_bridge_buggy;
> >
> > -#ifdef CONFIG_PCI
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - /* no legacy IRQs */
> > - return -ENODEV;
> > -}
> > -#endif
> > -
> > #ifdef CONFIG_PCI_DOMAINS
> > static inline int pci_proc_domain(struct pci_bus *bus)
> > {
> > diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
> > index f3fd5928bcbb..736793d65bcb 100644
> > --- a/arch/x86/include/asm/pci.h
> > +++ b/arch/x86/include/asm/pci.h
> > @@ -105,9 +105,6 @@ static inline void early_quirks(void) { }
> >
> > extern void pci_iommu_alloc(void);
> >
> > -/* generic pci stuff */
> > -#include <asm-generic/pci.h>
> > -
> > #ifdef CONFIG_NUMA
> > /* Returns the node based on pci bus */
> > static inline int __pcibus_to_node(const struct pci_bus *bus)
> > diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
> > index 8e2b48a268db..b56de9635b6c 100644
> > --- a/arch/xtensa/include/asm/pci.h
> > +++ b/arch/xtensa/include/asm/pci.h
> > @@ -43,7 +43,4 @@
> > #define ARCH_GENERIC_PCI_MMAP_RESOURCE 1
> > #define arch_can_pci_mmap_io() 1
> >
> > -/* Generic PCI */
> > -#include <asm-generic/pci.h>
> > -
> > #endif /* _XTENSA_PCI_H */
> > diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
> > index 2fa0f7d55259..8f7695624c8c 100644
> > --- a/drivers/pnp/resource.c
> > +++ b/drivers/pnp/resource.c
> > @@ -17,6 +17,7 @@
> > #include <asm/dma.h>
> > #include <asm/irq.h>
> > #include <linux/pci.h>
> > +#include <linux/libata.h>
> > #include <linux/ioport.h>
> > #include <linux/init.h>
> >
> > @@ -322,8 +323,8 @@ static int pci_dev_uses_irq(struct pnp_dev *pnp, struct pci_dev *pci,
> > * treat the compatibility IRQs as busy.
> > */
> > if ((progif & 0x5) != 0x5)
> > - if (pci_get_legacy_ide_irq(pci, 0) == irq ||
> > - pci_get_legacy_ide_irq(pci, 1) == irq) {
> > + if (ATA_PRIMARY_IRQ(pci) == irq ||
> > + ATA_SECONDARY_IRQ(pci) == irq) {
> > pnp_dbg(&pnp->dev, " legacy IDE device %s "
> > "using irq %d\n", pci_name(pci), irq);
> > return 1;
> > diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
> > deleted file mode 100644
> > index 6bb3cd3d695a..000000000000
> > --- a/include/asm-generic/pci.h
> > +++ /dev/null
> > @@ -1,17 +0,0 @@
> > -/* SPDX-License-Identifier: GPL-2.0 */
> > -/*
> > - * linux/include/asm-generic/pci.h
> > - *
> > - * Copyright (C) 2003 Russell King
> > - */
> > -#ifndef _ASM_GENERIC_PCI_H
> > -#define _ASM_GENERIC_PCI_H
> > -
> > -#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
> > -static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
> > -{
> > - return channel ? 15 : 14;
> > -}
> > -#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
> > -
> > -#endif /* _ASM_GENERIC_PCI_H */
> > --
> > 2.36.1
> >
> >
> > _______________________________________________
> > linux-riscv mailing list
> > linux-riscv@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-riscv
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