linux-kernel - [PATCH v3 1/1] x86/early_printk: Set _

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Date:	Mon, 12 Oct 2015 13:47:17 +0300
From:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	"H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v3 1/1] x86/early_printk: Set __iomem address space for IO

There are following warnings on unpatched code:

arch/x86/kernel/early_printk.c:198:32: warning: incorrect type in initializer (different address spaces)
arch/x86/kernel/early_printk.c:198:32:    expected void [noderef] <asn:2>*vaddr
arch/x86/kernel/early_printk.c:198:32:    got unsigned int [usertype] *<noident>
arch/x86/kernel/early_printk.c:205:32: warning: incorrect type in initializer (different address spaces)
arch/x86/kernel/early_printk.c:205:32:    expected void [noderef] <asn:2>*vaddr
arch/x86/kernel/early_printk.c:205:32:    got unsigned int [usertype] *<noident>

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
v3:
- u32 * -> u32 __iomem *
 arch/x86/kernel/early_printk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 076a4a7..21bf924 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -195,14 +195,14 @@ static __init void early_serial_init(char *s)
 #ifdef CONFIG_PCI
 static void mem32_serial_out(unsigned long addr, int offset, int value)
 {
-	u32 *vaddr = (u32 *)addr;
+	u32 __iomem *vaddr = (u32 __iomem *)addr;
 	/* shift implied by pointer type */
 	writel(value, vaddr + offset);
 }
 
 static unsigned int mem32_serial_in(unsigned long addr, int offset)
 {
-	u32 *vaddr = (u32 *)addr;
+	u32 __iomem *vaddr = (u32 __iomem *)addr;
 	/* shift implied by pointer type */
 	return readl(vaddr + offset);
 }
-- 
2.5.3

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