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authorRussell King <rmk+kernel@armlinux.org.uk>2017-01-16 15:13:25 +0000
committerRussell King <rmk+kernel@armlinux.org.uk>2017-02-28 11:06:21 +0000
commit68b32f361f3892fc376051b1702954b2dc692d13 (patch)
treee2ecf74be02543508d7028bd244973cd0f1ffded /arch
parent3928624812dcfa39b6a67f9de46efcb51c573ad0 (diff)
downloadlinux-68b32f361f3892fc376051b1702954b2dc692d13.tar.bz2
ARM: mm: clean up initrd initialisation
Rather than repeatedly testing phys_initrd_size to see if the initrd is still enabled, return from the new function to avoid executing the remaining initialisation. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mm/init.c27
1 files changed, 15 insertions, 12 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 43d8825e59bb..15739a95552a 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -236,26 +236,29 @@ static void __init arm_initrd_init(void)
phys_initrd_start = __virt_to_phys(initrd_start);
phys_initrd_size = initrd_end - initrd_start;
}
+
initrd_start = initrd_end = 0;
- if (phys_initrd_size &&
- !memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) {
+
+ if (!phys_initrd_size)
+ return;
+
+ if (!memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) {
pr_err("INITRD: 0x%08llx+0x%08lx is not a memory region - disabling initrd\n",
(u64)phys_initrd_start, phys_initrd_size);
- phys_initrd_start = phys_initrd_size = 0;
+ return;
}
- if (phys_initrd_size &&
- memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) {
+
+ if (memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) {
pr_err("INITRD: 0x%08llx+0x%08lx overlaps in-use memory region - disabling initrd\n",
(u64)phys_initrd_start, phys_initrd_size);
- phys_initrd_start = phys_initrd_size = 0;
+ return;
}
- if (phys_initrd_size) {
- memblock_reserve(phys_initrd_start, phys_initrd_size);
- /* Now convert initrd to virtual addresses */
- initrd_start = __phys_to_virt(phys_initrd_start);
- initrd_end = initrd_start + phys_initrd_size;
- }
+ memblock_reserve(phys_initrd_start, phys_initrd_size);
+
+ /* Now convert initrd to virtual addresses */
+ initrd_start = __phys_to_virt(phys_initrd_start);
+ initrd_end = initrd_start + phys_initrd_size;
#endif
}