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path: root/drivers/mtd/ubi/io.c
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Diffstat (limited to 'drivers/mtd/ubi/io.c')
-rw-r--r--drivers/mtd/ubi/io.c12
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index aaa6e1e83b29..e347cc4388ed 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -344,6 +344,12 @@ static int do_sync_erase(struct ubi_device *ubi, int pnum)
wait_queue_head_t wq;
dbg_io("erase PEB %d", pnum);
+ ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+
+ if (ubi->ro_mode) {
+ ubi_err("read-only mode");
+ return -EROFS;
+ }
retry:
init_waitqueue_head(&wq);
@@ -390,7 +396,7 @@ retry:
if (err)
return err;
- if (ubi_dbg_is_erase_failure() && !err) {
+ if (ubi_dbg_is_erase_failure()) {
dbg_err("cannot erase PEB %d (emulated)", pnum);
return -EIO;
}
@@ -1345,7 +1351,7 @@ int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
if (!(ubi_chk_flags & UBI_CHK_IO))
return 0;
- buf1 = __vmalloc(len, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+ buf1 = __vmalloc(len, GFP_NOFS, PAGE_KERNEL);
if (!buf1) {
ubi_err("cannot allocate memory to check writes");
return 0;
@@ -1409,7 +1415,7 @@ int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
if (!(ubi_chk_flags & UBI_CHK_IO))
return 0;
- buf = __vmalloc(len, GFP_KERNEL | GFP_NOFS, PAGE_KERNEL);
+ buf = __vmalloc(len, GFP_NOFS, PAGE_KERNEL);
if (!buf) {
ubi_err("cannot allocate memory to check for 0xFFs");
return 0;