Patchwork [01/16] UBI: Fastmap: Check find_mean_wl_entry()'s return value

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Submitter Richard Weinberger
Date June 27, 2012, 3:57 p.m.
Message ID <1340812676-14460-2-git-send-email-richard@nod.at>
Download mbox | patch
Permalink /patch/167671/
State New
Headers show

Comments

Richard Weinberger - June 27, 2012, 3:57 p.m.
find_mean_wl_entry() is allowed to return NULL.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 drivers/mtd/ubi/wl.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

Patch

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index b44cba0..85a3373 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -509,6 +509,10 @@  retry:
 	}
 
 	e = find_mean_wl_entry(ubi, &ubi->free);
+	if (!e) {
+		ubi_err("no free eraseblocks");
+		return -ENOSPC;
+	}
 
 	self_check_in_wl_tree(ubi, e, &ubi->free);