Received-SPF: pass (google.com: domain of linux-kernel+bounces-36014-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.199.223 as permitted sender) client-ip=147.75.199.223;
Date: Tue, 23 Jan 2024 14:20:22 -0600
From: Bjorn Helgaas <helgaas@kernel.org>
To: Philipp Stanner <pstanner@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>, Arnd Bergmann <arnd@arndb.de>,
	Johannes Berg <johannes@sipsolutions.net>,
	Randy Dunlap <rdunlap@infradead.org>, NeilBrown <neilb@suse.de>,
	John Sanpe <sanpeqf@gmail.com>,
	Kent Overstreet <kent.overstreet@gmail.com>,
	Niklas Schnelle <schnelle@linux.ibm.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Uladzislau Koshchanka <koshchanka@gmail.com>,
	"Masami Hiramatsu (Google)" <mhiramat@kernel.org>,
	David Gow <davidgow@google.com>, Kees Cook <keescook@chromium.org>,
	Rae Moar <rmoar@google.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	"wuqiang.matt" <wuqiang.matt@bytedance.com>,
	Yury Norov <yury.norov@gmail.com>, Jason Baron <jbaron@akamai.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Marco Elver <elver@google.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Ben Dooks <ben.dooks@codethink.co.uk>, dakr@redhat.com,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-arch@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v5 RESEND 2/5] lib: move pci_iomap.c to drivers/pci/
Message-ID: <20240123202022.GA325908@bhelgaas>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20240111085540.7740-3-pstanner@redhat.com>

On Thu, Jan 11, 2024 at 09:55:37AM +0100, Philipp Stanner wrote:
> This file is guarded by an #ifdef CONFIG_PCI. It, consequently, does not
> belong to lib/ because it is not generic infrastructure.
> 
> Move the file to drivers/pci/ and implement the necessary changes to
> Makefiles and Kconfigs.
> ...

> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -13,6 +13,11 @@ config FORCE_PCI
>  	select HAVE_PCI
>  	select PCI
>  
> +# select this to provide a generic PCI iomap,
> +# without PCI itself having to be defined
> +config GENERIC_PCI_IOMAP
> +	bool

> --- a/lib/pci_iomap.c
> +++ b/drivers/pci/iomap.c
> @@ -9,7 +9,6 @@
>  
>  #include <linux/export.h>
>  
> -#ifdef CONFIG_PCI

IIUC, in the case where CONFIG_GENERIC_PCI_IOMAP=y but CONFIG_PCI was
not set, pci_iomap.c was compiled but produced no code because the
entire file was wrapped with this #ifdef.

But after this patch, it looks like pci_iomap_range(),
pci_iomap_wc_range(), etc., *will* be compiled?

Is that what you intend, or did I miss something?

Bjorn