From: Dave Jiang Date: Wed, 21 Jul 2021 18:35:03 +0000 (-0700) Subject: dmaengine: idxd: fix uninit var for alt_drv X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=568b2126466f926a10be0b53b40c2d6ae056d8d6;p=linux.git dmaengine: idxd: fix uninit var for alt_drv 0-day detected uninitialized alt_drv variable in the bind_store() function. The branch can be taken when device is not idxd device or wq 'struct device'. Init alt_drv to NULL. Fixes: 6e7f3ee97bbe ("dmaengine: idxd: move dsa_drv support to compatible mode") Reported-by: kernel test robot Signed-off-by: Dave Jiang Link: https://lore.kernel.org/r/162689250332.2114335.636367120454420852.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul --- diff --git a/drivers/dma/idxd/compat.c b/drivers/dma/idxd/compat.c index d67746ee0c1a4..d7616c240dcd4 100644 --- a/drivers/dma/idxd/compat.c +++ b/drivers/dma/idxd/compat.c @@ -34,7 +34,7 @@ static ssize_t bind_store(struct device_driver *drv, const char *buf, size_t cou { struct bus_type *bus = drv->bus; struct device *dev; - struct device_driver *alt_drv; + struct device_driver *alt_drv = NULL; int rc = -ENODEV; struct idxd_dev *idxd_dev;