[PATCH 1/1] [media] USB: Deletion of unnecessary checks before three function calls

SF Markus Elfring
2014-11-20T12:33:45Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Thu, 20 Nov 2014 13:26:36 +0100

The functions pvr2_hdw_destroy(), rc_unregister_device() and vfree() perform
also input parameter validation. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/media/usb/au0828/au0828-input.c | 3 +--
drivers/media/usb/em28xx/em28xx-input.c | 3 +--
drivers/media/usb/pvrusb2/pvrusb2-context.c | 2 +-
drivers/media/usb/s2255/s2255drv.c | 3 +--
4 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/media/usb/au0828/au0828-input.c b/drivers/media/usb/au0828/au0828-input.c
index fd0d3a90..3357141 100644
--- a/drivers/media/usb/au0828/au0828-input.c
+++ b/drivers/media/usb/au0828/au0828-input.c
@@ -353,8 +353,7 @@ void au0828_rc_unregister(struct au0828_dev *dev)
if (!ir)
return;

- if (ir->rc)
- rc_unregister_device(ir->rc);
+ rc_unregister_device(ir->rc);

/* done */
kfree(ir);
diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
index ed843bd..67a22f4 100644
--- a/drivers/media/usb/em28xx/em28xx-input.c
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -838,8 +838,7 @@ static int em28xx_ir_fini(struct em28xx *dev)
if (!ir)
goto ref_put;

- if (ir->rc)
- rc_unregister_device(ir->rc);
+ rc_unregister_device(ir->rc);

/* done */
kfree(ir);
diff --git a/drivers/media/usb/pvrusb2/pvrusb2-context.c b/drivers/media/usb/pvrusb2/pvrusb2-context.c
index 7c19ff7..c8761c7 100644
--- a/drivers/media/usb/pvrusb2/pvrusb2-context.c
+++ b/drivers/media/usb/pvrusb2/pvrusb2-context.c
@@ -80,7 +80,7 @@ static void pvr2_context_set_notify(struct pvr2_context *mp, int fl)
static void pvr2_context_destroy(struct pvr2_context *mp)
{
pvr2_trace(PVR2_TRACE_CTXT,"pvr2_context %p (destroy)",mp);
- if (mp->hdw) pvr2_hdw_destroy(mp->hdw);
+ pvr2_hdw_destroy(mp->hdw);
pvr2_context_set_notify(mp, 0);
mutex_lock(&pvr2_context_mutex);
if (mp->exist_next) {
diff --git a/drivers/media/usb/s2255/s2255drv.c b/drivers/media/usb/s2255/s2255drv.c
index 2c90186..3cab886 100644
--- a/drivers/media/usb/s2255/s2255drv.c
+++ b/drivers/media/usb/s2255/s2255drv.c
@@ -1976,8 +1976,7 @@ static int s2255_release_sys_buffers(struct s2255_vc *vc)
{
unsigned long i;
for (i = 0; i < SYS_FRAMES; i++) {
- if (vc->buffer.frame[i].lpvbits)
- vfree(vc->buffer.frame[i].lpvbits);
+ vfree(vc->buffer.frame[i].lpvbits);
vc->buffer.frame[i].lpvbits = NULL;
}
return 0;
--
2.1.3