From f6af820ef1be58c2e4b81aa479b9f109eb6344ce Mon Sep 17 00:00:00 2001 From: Fuqian Huang Date: Wed, 3 Jul 2019 13:28:37 -0300 Subject: media: media/dvb: Use kmemdup rather than duplicating its implementation kmemdup is introduced to duplicate a region of memory in a neat way. Rather than kmalloc/kzalloc + memcpy, which the programmer needs to write the size twice (sometimes lead to mistakes), kmemdup improves readability, leads to smaller code and also reduce the chances of mistakes. Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy. Signed-off-by: Fuqian Huang Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/media/dvb-core') diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index a3393cd4e584..d7532f5a352a 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -476,7 +476,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, return -ENOMEM; } - dvbdevfops = kzalloc(sizeof(struct file_operations), GFP_KERNEL); + dvbdevfops = kmemdup(template->fops, sizeof(*dvbdevfops), GFP_KERNEL); if (!dvbdevfops){ kfree (dvbdev); @@ -492,7 +492,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, dvbdev->fops = dvbdevfops; init_waitqueue_head (&dvbdev->wait_queue); - memcpy(dvbdevfops, template->fops, sizeof(struct file_operations)); dvbdevfops->owner = adap->module; list_add_tail (&dvbdev->list_head, &adap->device_list); -- cgit v1.2.3