[PATCH] kexec: fix sparse warnings

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/kexec.c b/kernel/kexec.c
index 7843548cf2d9576fcc67deeabbb1b1d41f14ddde..cdd4dcd8fb630be76f35246cb3196f327fef252b 100644 (file)
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -241,7 +241,7 @@ static int kimage_normal_alloc(struct kimage **rimage, unsigned long entry,
 
 static int kimage_crash_alloc(struct kimage **rimage, unsigned long entry,
                                unsigned long nr_segments,
-                               struct kexec_segment *segments)
+                               struct kexec_segment __user *segments)
 {
        int result;
        struct kimage *image;
@@ -650,7 +650,7 @@ static kimage_entry_t *kimage_dst_used(struct kimage *image,
                }
        }
 
-       return 0;
+       return NULL;
 }
 
 static struct page *kimage_alloc_page(struct kimage *image,
@@ -696,7 +696,7 @@ static struct page *kimage_alloc_page(struct kimage *image,
                /* Allocate a page, if we run out of memory give up */
                page = kimage_alloc_pages(gfp_mask, 0);
                if (!page)
-                       return 0;
+                       return NULL;
                /* If the page cannot be used file it away */
                if (page_to_pfn(page) >
                                (KEXEC_SOURCE_MEMORY_LIMIT >> PAGE_SHIFT)) {
@@ -754,7 +754,7 @@ static int kimage_load_normal_segment(struct kimage *image,
        unsigned long maddr;
        unsigned long ubytes, mbytes;
        int result;
-       unsigned char *buf;
+       unsigned char __user *buf;
 
        result = 0;
        buf = segment->buf;
@@ -818,7 +818,7 @@ static int kimage_load_crash_segment(struct kimage *image,
        unsigned long maddr;
        unsigned long ubytes, mbytes;
        int result;
-       unsigned char *buf;
+       unsigned char __user *buf;
 
        result = 0;
        buf = segment->buf;