linux-kernel - [PATCH 15/15] x86/RAS/mce_amd

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Message-Id: <20160912075941.24699-16-bp@alien8.de>
Date:   Mon, 12 Sep 2016 09:59:41 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 15/15] x86/RAS/mce_amd_inj: Fix some W= warnings

From: Borislav Petkov <bp@...e.de>

In particular:

  arch/x86/ras/mce_amd_inj.c: In function ‘prepare_msrs’:
  arch/x86/ras/mce_amd_inj.c:249:13: warning: declaration of ‘i_mce’ shadows a global declaration [-Wshadow]
    struct mce i_mce = *(struct mce *)info;
               ^~~~~

  arch/x86/ras/mce_amd_inj.c: In function ‘init_mce_inject’:
  arch/x86/ras/mce_amd_inj.c:453:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (i = 0; i < ARRAY_SIZE(dfs_fls); i++) {

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/ras/mce_amd_inj.c | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/arch/x86/ras/mce_amd_inj.c b/arch/x86/ras/mce_amd_inj.c
index f4b442cc8a3e..cd318d93099e 100644
--- a/arch/x86/ras/mce_amd_inj.c
+++ b/arch/x86/ras/mce_amd_inj.c
@@ -246,28 +246,27 @@ static void toggle_nb_mca_mst_cpu(u16 nid)
 
 static void prepare_msrs(void *info)
 {
-	struct mce i_mce = *(struct mce *)info;
-	u8 b = i_mce.bank;
+	struct mce m = *(struct mce *)info;
+	u8 b = m.bank;
 
-	wrmsrl(MSR_IA32_MCG_STATUS, i_mce.mcgstatus);
+	wrmsrl(MSR_IA32_MCG_STATUS, m.mcgstatus);
 
 	if (boot_cpu_has(X86_FEATURE_SMCA)) {
-		if (i_mce.inject_flags == DFR_INT_INJ) {
-			wrmsrl(MSR_AMD64_SMCA_MCx_DESTAT(b), i_mce.status);
-			wrmsrl(MSR_AMD64_SMCA_MCx_DEADDR(b), i_mce.addr);
+		if (m.inject_flags == DFR_INT_INJ) {
+			wrmsrl(MSR_AMD64_SMCA_MCx_DESTAT(b), m.status);
+			wrmsrl(MSR_AMD64_SMCA_MCx_DEADDR(b), m.addr);
 		} else {
-			wrmsrl(MSR_AMD64_SMCA_MCx_STATUS(b), i_mce.status);
-			wrmsrl(MSR_AMD64_SMCA_MCx_ADDR(b), i_mce.addr);
+			wrmsrl(MSR_AMD64_SMCA_MCx_STATUS(b), m.status);
+			wrmsrl(MSR_AMD64_SMCA_MCx_ADDR(b), m.addr);
 		}
 
-		wrmsrl(MSR_AMD64_SMCA_MCx_MISC(b), i_mce.misc);
-		wrmsrl(MSR_AMD64_SMCA_MCx_SYND(b), i_mce.synd);
+		wrmsrl(MSR_AMD64_SMCA_MCx_MISC(b), m.misc);
+		wrmsrl(MSR_AMD64_SMCA_MCx_SYND(b), m.synd);
 	} else {
-		wrmsrl(MSR_IA32_MCx_STATUS(b), i_mce.status);
-		wrmsrl(MSR_IA32_MCx_ADDR(b), i_mce.addr);
-		wrmsrl(MSR_IA32_MCx_MISC(b), i_mce.misc);
+		wrmsrl(MSR_IA32_MCx_STATUS(b), m.status);
+		wrmsrl(MSR_IA32_MCx_ADDR(b), m.addr);
+		wrmsrl(MSR_IA32_MCx_MISC(b), m.misc);
 	}
-
 }
 
 static void do_inject(void)
@@ -441,7 +440,7 @@ static struct dfs_node {
 
 static int __init init_mce_inject(void)
 {
-	int i;
+	unsigned int i;
 	u64 cap;
 
 	rdmsrl(MSR_IA32_MCG_CAP, cap);
-- 
2.10.0