diff options
| author | Colin King <colin.king@canonical.com> | 2015-09-14 19:35:04 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-09-29 23:00:58 +1000 |
| commit | 6a6120bc5ec9e54d3cc06e739c270b55b081abe5 (patch) | |
| tree | 920798384dd3dad9f03bd9094595784b1dd1b907 | |
| parent | 12a509336701132f521c8fc22a5910478ca98cb3 (diff) | |
| download | lwn-6a6120bc5ec9e54d3cc06e739c270b55b081abe5.tar.gz lwn-6a6120bc5ec9e54d3cc06e739c270b55b081abe5.zip | |
drivers/ps3: Fix ps3-vuart null dereference
On the unlikely event that drv is null, the current code will
perform a null pointer dereference with it when printing a dev_dbg
message. Instead, the BUG_ON check on drv should be performed
before we emit the dev_dbg message.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | drivers/ps3/ps3-vuart.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/ps3/ps3-vuart.c b/drivers/ps3/ps3-vuart.c index d6db822bef84..632701a1d993 100644 --- a/drivers/ps3/ps3-vuart.c +++ b/drivers/ps3/ps3-vuart.c @@ -1000,12 +1000,11 @@ static int ps3_vuart_probe(struct ps3_system_bus_device *dev) dev_dbg(&dev->core, "%s:%d\n", __func__, __LINE__); drv = ps3_system_bus_dev_to_vuart_drv(dev); + BUG_ON(!drv); dev_dbg(&dev->core, "%s:%d: (%s)\n", __func__, __LINE__, drv->core.core.name); - BUG_ON(!drv); - if (dev->port_number >= PORT_COUNT) { BUG(); return -EINVAL; |