caif: Remove OOM messages, use kzalloc

Remove per site OOM messages because they duplicate
the generic mm subsystem OOM message.

Use kzalloc instead of kmalloc/memset
when next to the OOM message removals.

Reduces object size (allyesconfig ~2%)

$ size -t drivers/net/caif/built-in.o.old net/caif/built-in.o.old
   text	   data	    bss	    dec	    hex	filename
  32297	    700	   8224	  41221	   a105	drivers/net/caif/built-in.o.old
  72159	   1317	  20552	  94028	  16f4c	net/caif/built-in.o.old
 104456	   2017	  28776	 135249	  21051	(TOTALS)
$ size -t drivers/net/caif/built-in.o.new net/caif/built-in.o.new
   text	   data	    bss	    dec	    hex	filename
  31975	    700	   8184	  40859	   9f9b	drivers/net/caif/built-in.o.new
  70748	   1317	  20152	  92217	  16839	net/caif/built-in.o.new
 102723	   2017	  28336	 133076	  207d4	(TOTALS)

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 5 deletions

diff --git a/net/caif/cffrml.c b/net/caif/cffrml.c
index 04204b202718..f39921171d0d 100644
--- a/net/caif/cffrml.c
+++ b/net/caif/cffrml.c
@@ -34,11 +34,9 @@ static u32 cffrml_rcv_error;
 static u32 cffrml_rcv_checsum_error;
 struct cflayer *cffrml_create(u16 phyid, bool use_fcs)
 {
-        struct cffrml *this = kmalloc(sizeof(struct cffrml), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        struct cffrml *this = kzalloc(sizeof(struct cffrml), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         this->pcpu_refcnt = alloc_percpu(int);
         if (this->pcpu_refcnt == NULL) {
                 kfree(this);
@@ -47,7 +45,6 @@ struct cflayer *cffrml_create(u16 phyid, bool use_fcs)
 
         caif_assert(offsetof(struct cffrml, layer) == 0);
 
-        memset(this, 0, sizeof(struct cflayer));
         this->layer.receive = cffrml_receive;
         this->layer.transmit = cffrml_transmit;
         this->layer.ctrlcmd = cffrml_ctrlcmd;