summaryrefslogtreecommitdiffstats
path: root/kernel/kexec_core.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/kexec_core.c')
-rw-r--r--kernel/kexec_core.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 56b3ed0927b0..23311c803b1b 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -147,7 +147,7 @@ static struct page *kimage_alloc_page(struct kimage *image,
int sanity_check_segment_list(struct kimage *image)
{
- int result, i;
+ int i;
unsigned long nr_segments = image->nr_segments;
/*
@@ -163,16 +163,15 @@ int sanity_check_segment_list(struct kimage *image)
* simply because addresses are changed to page size
* granularity.
*/
- result = -EADDRNOTAVAIL;
for (i = 0; i < nr_segments; i++) {
unsigned long mstart, mend;
mstart = image->segment[i].mem;
mend = mstart + image->segment[i].memsz;
if ((mstart & ~PAGE_MASK) || (mend & ~PAGE_MASK))
- return result;
+ return -EADDRNOTAVAIL;
if (mend >= KEXEC_DESTINATION_MEMORY_LIMIT)
- return result;
+ return -EADDRNOTAVAIL;
}
/* Verify our destination addresses do not overlap.
@@ -180,7 +179,6 @@ int sanity_check_segment_list(struct kimage *image)
* through very weird things can happen with no
* easy explanation as one segment stops on another.
*/
- result = -EINVAL;
for (i = 0; i < nr_segments; i++) {
unsigned long mstart, mend;
unsigned long j;
@@ -194,7 +192,7 @@ int sanity_check_segment_list(struct kimage *image)
pend = pstart + image->segment[j].memsz;
/* Do the segments overlap ? */
if ((mend > pstart) && (mstart < pend))
- return result;
+ return -EINVAL;
}
}
@@ -203,10 +201,9 @@ int sanity_check_segment_list(struct kimage *image)
* and it is easier to check up front than to be surprised
* later on.
*/
- result = -EINVAL;
for (i = 0; i < nr_segments; i++) {
if (image->segment[i].bufsz > image->segment[i].memsz)
- return result;
+ return -EINVAL;
}
/*
@@ -220,7 +217,6 @@ int sanity_check_segment_list(struct kimage *image)
*/
if (image->type == KEXEC_TYPE_CRASH) {
- result = -EADDRNOTAVAIL;
for (i = 0; i < nr_segments; i++) {
unsigned long mstart, mend;
@@ -229,7 +225,7 @@ int sanity_check_segment_list(struct kimage *image)
/* Ensure we are within the crash kernel limits */
if ((mstart < crashk_res.start) ||
(mend > crashk_res.end))
- return result;
+ return -EADDRNOTAVAIL;
}
}