2017-08-31 15:07:00

by Himanshu Jha

Subject: [PATCH] ALSA: ctxfi: Remove null check before kfree

kfree on NULL pointer is a no-op and therefore checking is redundant.

Signed-off-by: Himanshu Jha <[email protected]>
---
sound/pci/ctxfi/ctresource.c | 6 ++----
sound/pci/ctxfi/ctsrc.c | 6 ++----
2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/sound/pci/ctxfi/ctresource.c b/sound/pci/ctxfi/ctresource.c
index c5124c3..80c4d84 100644
--- a/sound/pci/ctxfi/ctresource.c
+++ b/sound/pci/ctxfi/ctresource.c
@@ -258,10 +258,8 @@ int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,

int rsc_mgr_uninit(struct rsc_mgr *mgr)
{
- if (NULL != mgr->rscs) {
- kfree(mgr->rscs);
- mgr->rscs = NULL;
- }
+ kfree(mgr->rscs);
+ mgr->rscs = NULL;

if ((NULL != mgr->hw) && (NULL != mgr->ctrl_blk)) {
switch (mgr->type) {
diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c
index a5a72df..bb4c9c3 100644
--- a/sound/pci/ctxfi/ctsrc.c
+++ b/sound/pci/ctxfi/ctsrc.c
@@ -702,10 +702,8 @@ static int srcimp_rsc_init(struct srcimp *srcimp,

static int srcimp_rsc_uninit(struct srcimp *srcimp)
{
- if (NULL != srcimp->imappers) {
- kfree(srcimp->imappers);
- srcimp->imappers = NULL;
- }
+ kfree(srcimp->imappers);
+ srcimp->imappers = NULL;
srcimp->ops = NULL;
srcimp->mgr = NULL;
rsc_uninit(&srcimp->rsc);
--
2.7.4

2017-08-31 18:11:02

by Takashi Iwai

Subject: Re: [PATCH] ALSA: ctxfi: Remove null check before kfree

On Thu, 31 Aug 2017 17:06:42 +0200,
Himanshu Jha wrote:
>
> kfree on NULL pointer is a no-op and therefore checking is redundant.
>
> Signed-off-by: Himanshu Jha <[email protected]>

Applied, thanks.


Takashi