On Sat, Mar 27, 2021 at 04:33:00PM +0800, Hui Tang wrote: > 'xx_debugfs_init' check if debugfs opened. > > Signed-off-by: Hui Tang <tanghui20@xxxxxxxxxx> > --- > drivers/crypto/hisilicon/hpre/hpre_main.c | 5 ++++- > drivers/crypto/hisilicon/qm.c | 3 +++ > drivers/crypto/hisilicon/sec2/sec_main.c | 5 ++++- > drivers/crypto/hisilicon/zip/zip_main.c | 3 +++ > 4 files changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c > index c7ab06d..f2605c4 100644 > --- a/drivers/crypto/hisilicon/hpre/hpre_main.c > +++ b/drivers/crypto/hisilicon/hpre/hpre_main.c > @@ -779,6 +779,9 @@ static int hpre_debugfs_init(struct hisi_qm *qm) > struct device *dev = &qm->pdev->dev; > int ret; > > + if (!debugfs_initialized()) > + return -ENOENT; Why? What does this help with? Why does the code care if debugfs is running or not? thanks, greg k-h
