[PATCH] video: fbdev: uvesafb: use CONFIG_X86_PAE surround _PAGE_NX check code

From: Wang YanQing
Date: Wed Mar 05 2014 - 11:17:28 EST


Because _PAGE_NX check will always false when we don't define
CONFIG_X86_PAE for CONFIG_X86_32, so use CONFIG_X86_PAE surround
the check code.

Although I believe "smart" compile will optimize out and generate
the same code, but use CONFIG_X86_PAE surround check code will
clear it and prohibit warning from static source code analyze tool.

[ This patch fix warning report by fengguang.wu@xxxxxxxxx
"drivers/video/fbdev/uvesafb.c:816 uvesafb_vbe_init()
warn: bitwise AND condition is false here" ]

Signed-off-by: Wang YanQing <udknight@xxxxxxxxx>
---
drivers/video/fbdev/uvesafb.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 509d452..102858c 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -813,6 +813,7 @@ static int uvesafb_vbe_init(struct fb_info *info)
par->ypan = ypan;

if (par->pmi_setpal || par->ypan) {
+#ifdef CONFIG_X86_PAE
if (__supported_pte_mask & _PAGE_NX) {
par->pmi_setpal = par->ypan = 0;
printk(KERN_WARNING "uvesafb: NX protection is active, "
@@ -820,6 +821,9 @@ static int uvesafb_vbe_init(struct fb_info *info)
} else {
uvesafb_vbe_getpmi(task, par);
}
+#else
+ uvesafb_vbe_getpmi(task, par);
+#endif
}
#else
/* The protected mode interface is not available on non-x86. */
--
1.8.3.4.8.g69490f3.dirty
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