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>

13 files changed, 28 insertions, 87 deletions

diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c
index b41c2fced0a7..2fcabba56087 100644
--- a/drivers/net/caif/caif_hsi.c
+++ b/drivers/net/caif/caif_hsi.c
@@ -937,11 +937,8 @@ int cfhsi_probe(struct platform_device *pdev)
         int res;
 
         ndev = alloc_netdev(sizeof(struct cfhsi), "cfhsi%d", cfhsi_setup);
-        if (!ndev) {
-                dev_err(&pdev->dev, "%s: alloc_netdev failed.\n",
-                        __func__);
+        if (!ndev)
                 return -ENODEV;
-        }
 
         cfhsi = netdev_priv(ndev);
         cfhsi->ndev = ndev;
@@ -969,8 +966,6 @@ int cfhsi_probe(struct platform_device *pdev)
          */
         cfhsi->tx_buf = kzalloc(CFHSI_BUF_SZ_TX, GFP_KERNEL);
         if (!cfhsi->tx_buf) {
-                dev_err(&ndev->dev, "%s: Failed to allocate TX buffer.\n",
-                        __func__);
                 res = -ENODEV;
                 goto err_alloc_tx;
         }
@@ -981,8 +976,6 @@ int cfhsi_probe(struct platform_device *pdev)
          */
         cfhsi->rx_buf = kzalloc(CFHSI_BUF_SZ_RX, GFP_KERNEL);
         if (!cfhsi->rx_buf) {
-                dev_err(&ndev->dev, "%s: Failed to allocate RX buffer.\n",
-                        __func__);
                 res = -ENODEV;
                 goto err_alloc_rx;
         }
diff --git a/drivers/net/caif/caif_spi.c b/drivers/net/caif/caif_spi.c
index 0f8defc73307..05e791f46aef 100644
--- a/drivers/net/caif/caif_spi.c
+++ b/drivers/net/caif/caif_spi.c
@@ -664,8 +664,6 @@ int cfspi_spi_probe(struct platform_device *pdev)
         /* Allocate DMA buffers. */
         cfspi->xfer.va_tx = dma_alloc(&cfspi->xfer.pa_tx);
         if (!cfspi->xfer.va_tx) {
-                printk(KERN_WARNING
-                       "CFSPI: failed to allocate dma TX buffer.\n");
                 res = -ENODEV;
                 goto err_dma_alloc_tx;
         }
@@ -673,8 +671,6 @@ int cfspi_spi_probe(struct platform_device *pdev)
         cfspi->xfer.va_rx = dma_alloc(&cfspi->xfer.pa_rx);
 
         if (!cfspi->xfer.va_rx) {
-                printk(KERN_WARNING
-                       "CFSPI: failed to allocate dma TX buffer.\n");
                 res = -ENODEV;
                 goto err_dma_alloc_rx;
         }
diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 52fe33bee029..f07ab8c22224 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -78,10 +78,8 @@ struct cfcnfg *cfcnfg_create(void)
 
         /* Initiate this layer */
         this = kzalloc(sizeof(struct cfcnfg), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        if (!this)
                 return NULL;
-        }
         this->mux = cfmuxl_create();
         if (!this->mux)
                 goto out_of_mem;
@@ -108,8 +106,6 @@ struct cfcnfg *cfcnfg_create(void)
 
         return this;
 out_of_mem:
-        pr_warn("Out of memory\n");
-
         synchronize_rcu();
 
         kfree(this->mux);
@@ -448,10 +444,8 @@ cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv,
                                 "- unknown channel type\n");
                 goto unlock;
         }
-        if (!servicel) {
-                pr_warn("Out of memory\n");
+        if (!servicel)
                 goto unlock;
-        }
         layer_set_dn(servicel, cnfg->mux);
         cfmuxl_set_uplayer(cnfg->mux, servicel, channel_id);
         layer_set_up(servicel, adapt_layer);
@@ -497,10 +491,8 @@ got_phyid:
         case CFPHYTYPE_FRAG:
                 phy_driver =
                     cfserl_create(CFPHYTYPE_FRAG, phyid, stx);
-                if (!phy_driver) {
-                        pr_warn("Out of memory\n");
+                if (!phy_driver)
                         goto out;
-                }
                 break;
         case CFPHYTYPE_CAIF:
                 phy_driver = NULL;
@@ -521,7 +513,6 @@ got_phyid:
         frml = cffrml_create(phyid, fcs);
 
         if (!frml) {
-                pr_warn("Out of memory\n");
                 kfree(phyinfo);
                 goto out;
         }
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index e22671bed669..5cf52225692e 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -35,15 +35,12 @@ struct cflayer *cfctrl_create(void)
 {
         struct dev_info dev_info;
         struct cfctrl *this =
-                kmalloc(sizeof(struct cfctrl), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+                kzalloc(sizeof(struct cfctrl), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfctrl, serv.layer) == 0);
         memset(&dev_info, 0, sizeof(dev_info));
         dev_info.id = 0xff;
-        memset(this, 0, sizeof(*this));
         cfsrvl_init(&this->serv, 0, &dev_info, false);
         atomic_set(&this->req_seq_no, 1);
         atomic_set(&this->rsp_seq_no, 1);
@@ -180,10 +177,8 @@ void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid)
         struct cfctrl *cfctrl = container_obj(layer);
         struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
         struct cflayer *dn = cfctrl->serv.layer.dn;
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return;
-        }
         if (!dn) {
                 pr_debug("not able to send enum request\n");
                 return;
@@ -224,10 +219,8 @@ int cfctrl_linkup_request(struct cflayer *layer,
         }
 
         pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return -ENOMEM;
-        }
         cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_SETUP);
         cfpkt_addbdy(pkt, (param->chtype << 4) | param->linktype);
         cfpkt_addbdy(pkt, (param->priority << 3) | param->phyid);
@@ -275,10 +268,8 @@ int cfctrl_linkup_request(struct cflayer *layer,
                 return -EINVAL;
         }
         req = kzalloc(sizeof(*req), GFP_KERNEL);
-        if (!req) {
-                pr_warn("Out of memory\n");
+        if (!req)
                 return -ENOMEM;
-        }
         req->client_layer = user_layer;
         req->cmd = CFCTRL_CMD_LINK_SETUP;
         req->param = *param;
@@ -312,10 +303,8 @@ int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid,
         struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN);
         struct cflayer *dn = cfctrl->serv.layer.dn;
 
-        if (!pkt) {
-                pr_warn("Out of memory\n");
+        if (!pkt)
                 return -ENOMEM;
-        }
 
         if (!dn) {
                 pr_debug("not able to send link-down request\n");
diff --git a/net/caif/cfdbgl.c b/net/caif/cfdbgl.c
index 11a2af4c162a..65d6ef3cf9aa 100644
--- a/net/caif/cfdbgl.c
+++ b/net/caif/cfdbgl.c
@@ -19,13 +19,10 @@ static int cfdbgl_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfdbgl_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *dbg = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!dbg) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *dbg = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!dbg)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(dbg, 0, sizeof(struct cfsrvl));
         cfsrvl_init(dbg, channel_id, dev_info, false);
         dbg->layer.receive = cfdbgl_receive;
         dbg->layer.transmit = cfdbgl_transmit;
diff --git a/net/caif/cfdgml.c b/net/caif/cfdgml.c
index 0382dec84fdc..0f5ff27aa41c 100644
--- a/net/caif/cfdgml.c
+++ b/net/caif/cfdgml.c
@@ -26,13 +26,10 @@ static int cfdgml_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfdgml_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *dgm = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!dgm) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *dgm = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!dgm)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(dgm, 0, sizeof(struct cfsrvl));
         cfsrvl_init(dgm, channel_id, dev_info, true);
         dgm->layer.receive = cfdgml_receive;
         dgm->layer.transmit = cfdgml_transmit;
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;
diff --git a/net/caif/cfrfml.c b/net/caif/cfrfml.c
index 0deabb440051..81660f809713 100644
--- a/net/caif/cfrfml.c
+++ b/net/caif/cfrfml.c
@@ -46,13 +46,10 @@ struct cflayer *cfrfml_create(u8 channel_id, struct dev_info *dev_info,
                                         int mtu_size)
 {
         int tmp;
-        struct cfrfml *this =
-                kzalloc(sizeof(struct cfrfml), GFP_ATOMIC);
+        struct cfrfml *this = kzalloc(sizeof(struct cfrfml), GFP_ATOMIC);
 
-        if (!this) {
-                pr_warn("Out of memory\n");
+        if (!this)
                 return NULL;
-        }
 
         cfsrvl_init(&this->serv, channel_id, dev_info, false);
         this->serv.release = cfrfml_release;
diff --git a/net/caif/cfserl.c b/net/caif/cfserl.c
index 2715c84cfa87..797c8d165993 100644
--- a/net/caif/cfserl.c
+++ b/net/caif/cfserl.c
@@ -33,13 +33,10 @@ static void cfserl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl,
 
 struct cflayer *cfserl_create(int type, int instance, bool use_stx)
 {
-        struct cfserl *this = kmalloc(sizeof(struct cfserl), GFP_ATOMIC);
-        if (!this) {
-                pr_warn("Out of memory\n");
+        struct cfserl *this = kzalloc(sizeof(struct cfserl), GFP_ATOMIC);
+        if (!this)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfserl, layer) == 0);
-        memset(this, 0, sizeof(struct cfserl));
         this->layer.receive = cfserl_receive;
         this->layer.transmit = cfserl_transmit;
         this->layer.ctrlcmd = cfserl_ctrlcmd;
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index 535a1e72b366..b99f5b22689d 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -108,10 +108,8 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
                         struct caif_payload_info *info;
                         u8 flow_on = SRVL_FLOW_ON;
                         pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
-                        if (!pkt) {
-                                pr_warn("Out of memory\n");
+                        if (!pkt)
                                 return -ENOMEM;
-                        }
 
                         if (cfpkt_add_head(pkt, &flow_on, 1) < 0) {
                                 pr_err("Packet is erroneous!\n");
@@ -130,10 +128,8 @@ static int cfservl_modemcmd(struct cflayer *layr, enum caif_modemcmd ctrl)
                         struct caif_payload_info *info;
                         u8 flow_off = SRVL_FLOW_OFF;
                         pkt = cfpkt_create(SRVL_CTRL_PKT_SIZE);
-                        if (!pkt) {
-                                pr_warn("Out of memory\n");
+                        if (!pkt)
                                 return -ENOMEM;
-                        }
 
                         if (cfpkt_add_head(pkt, &flow_off, 1) < 0) {
                                 pr_err("Packet is erroneous!\n");
diff --git a/net/caif/cfutill.c b/net/caif/cfutill.c
index 98e027db18ed..53e49f3e3af3 100644
--- a/net/caif/cfutill.c
+++ b/net/caif/cfutill.c
@@ -26,13 +26,10 @@ static int cfutill_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfutill_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *util = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!util) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *util = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!util)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(util, 0, sizeof(struct cfsrvl));
         cfsrvl_init(util, channel_id, dev_info, true);
         util->layer.receive = cfutill_receive;
         util->layer.transmit = cfutill_transmit;
diff --git a/net/caif/cfveil.c b/net/caif/cfveil.c
index 3ec83fbc2887..910ab0661f66 100644
--- a/net/caif/cfveil.c
+++ b/net/caif/cfveil.c
@@ -25,13 +25,10 @@ static int cfvei_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfvei_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *vei = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!vei) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *vei = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!vei)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
-        memset(vei, 0, sizeof(struct cfsrvl));
         cfsrvl_init(vei, channel_id, dev_info, true);
         vei->layer.receive = cfvei_receive;
         vei->layer.transmit = cfvei_transmit;
diff --git a/net/caif/cfvidl.c b/net/caif/cfvidl.c
index b2f5989ad455..e3f37db40ac3 100644
--- a/net/caif/cfvidl.c
+++ b/net/caif/cfvidl.c
@@ -21,14 +21,11 @@ static int cfvidl_transmit(struct cflayer *layr, struct cfpkt *pkt);
 
 struct cflayer *cfvidl_create(u8 channel_id, struct dev_info *dev_info)
 {
-        struct cfsrvl *vid = kmalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
-        if (!vid) {
-                pr_warn("Out of memory\n");
+        struct cfsrvl *vid = kzalloc(sizeof(struct cfsrvl), GFP_ATOMIC);
+        if (!vid)
                 return NULL;
-        }
         caif_assert(offsetof(struct cfsrvl, layer) == 0);
 
-        memset(vid, 0, sizeof(struct cfsrvl));
         cfsrvl_init(vid, channel_id, dev_info, false);
         vid->layer.receive = cfvidl_receive;
         vid->layer.transmit = cfvidl_transmit;