diff options
| author | Andrew Goodbody <[email protected]> | 2025-07-01 17:12:44 +0100 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-10-28 12:11:09 -0600 |
| commit | a5c83da3ccb372133fdbe43e0a8e65e06b3291e8 (patch) | |
| tree | cbffded59f0ceedbec18b79381c5e11d92b515bd | |
| parent | ce1bdedd2f4b3c5c8c76fbf2fc1a234fca470573 (diff) | |
mtd: nand: Prevent dereference of NULL pointer
In nand_wait_ready there is a loop that includes a NULL check for
chip->dev_ready before it is dereferenced. Use a NULL check once the
loop is exited as well to cover the case where it exits due to a timeout
and it is therefore not known if chip->dev_ready is NULL or not.
This issue found by Smatch.
Signed-off-by: Andrew Goodbody <[email protected]>
Reviewed-by: Michael Trimarchi <[email protected]>
| -rw-r--r-- | drivers/mtd/nand/raw/nand_base.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index d3d1b93947b..48e3685d995 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -566,7 +566,7 @@ void nand_wait_ready(struct mtd_info *mtd) break; } - if (!chip->dev_ready(mtd)) + if (!chip->dev_ready || !chip->dev_ready(mtd)) pr_warn("timeout while waiting for chip to become ready\n"); } EXPORT_SYMBOL_GPL(nand_wait_ready); |