Nice catch. Thanks. Reviewed-by: Logan Gunthorpe <logang@xxxxxxxxxxxx> Logan On 10/04/17 10:32 PM, Christophe JAILLET wrote: > 'stuser_create' returns an error pointer in case of error, not NULL. > So test its return value with IS_ERR. > > Fixes: 74004262f329 ("MicroSemi Switchtec management interface driver") > > Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> > --- > drivers/pci/switch/switchtec.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c > index fcde98161d9a..cc6e085008fb 100644 > --- a/drivers/pci/switch/switchtec.c > +++ b/drivers/pci/switch/switchtec.c > @@ -608,7 +608,7 @@ static int switchtec_dev_open(struct inode *inode, struct file *filp) > stdev = container_of(inode->i_cdev, struct switchtec_dev, cdev); > > stuser = stuser_create(stdev); > - if (!stuser) > + if (IS_ERR(stuser)) > return PTR_ERR(stuser); > > filp->private_data = stuser; >