linux-kernel - [PATCH] x86/pci: Annotate 'pci_root_ops' with __ro_after

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Message-Id: <20181105201735.72026-1-zsm@chromium.org>
Date:   Mon,  5 Nov 2018 12:17:35 -0800
From:   Zubin Mithra <zsm@...omium.org>
To:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Cc:     groeck@...omium.org, keescook@...omium.org, zsm@...omium.org
Subject: [PATCH] x86/pci: Annotate 'pci_root_ops' with __ro_after_init

When CONFIG_X86_INTEL_MID is set pci_root_ops is written to inside
intel_mid_pci_init(which is marked __init) and not modified after. This
makes pci_root_ops a suitable candidate for annotating as
__ro_after_init.

Signed-off-by: Zubin Mithra <zsm@...omium.org>
---
 arch/x86/pci/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index d4ec117c1142..204ee80cfa63 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -67,7 +67,7 @@ static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int siz
 				  devfn, where, size, value);
 }
 
-struct pci_ops pci_root_ops = {
+struct pci_ops pci_root_ops __ro_after_init = {
 	.read = pci_read,
 	.write = pci_write,
 };
-- 
2.19.1.930.g4563a0d9d0-goog