linux-kernel - [PATCH] PCI: Global variable decls must match the defs in section attributes

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Message-ID: <20091214141344.12091.43853.stgit@warthog.procyon.org.uk>
Date:	Mon, 14 Dec 2009 14:13:44 +0000
From:	David Howells <dhowells@...hat.com>
To:	torvalds@...l.org, jbarnes@...tuousgeek.org, tj@...nel.org,
	akpm@...ux-foundation.org
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: [PATCH] PCI: Global variable decls must match the defs in section
	attributes

Global variable declarations must match the definitions in section attributes
as the compiler is at liberty to vary the method it uses to access a variable,
depending on the section it is in.

When building the FRV arch, I now see:

drivers/built-in.o: In function `pci_apply_final_quirks':
drivers/pci/quirks.c:2606: relocation truncated to fit: R_FRV_GPREL12 against symbol `pci_dfl_cache_line_size' defined in .devinit.data section in drivers/built-in.o
drivers/pci/quirks.c:2623: relocation truncated to fit: R_FRV_GPREL12 against symbol `pci_dfl_cache_line_size' defined in .devinit.data section in drivers/built-in.o
drivers/pci/quirks.c:2630: relocation truncated to fit: R_FRV_GPREL12 against symbol `pci_dfl_cache_line_size' defined in .devinit.data section in drivers/built-in.o

because the declaration of pci_dfl_cache_line_size in linux/pci.h does not
match the definition in drivers/pci/pci.c.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 include/linux/pci.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/include/linux/pci.h b/include/linux/pci.h
index 04771b9..bf1e670 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1255,7 +1255,7 @@ extern int pci_pci_problems;
 
 extern unsigned long pci_cardbus_io_size;
 extern unsigned long pci_cardbus_mem_size;
-extern u8 pci_dfl_cache_line_size;
+extern u8 __devinitdata pci_dfl_cache_line_size;
 extern u8 pci_cache_line_size;
 
 extern unsigned long pci_hotplug_io_size;

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