netdev - [patch v2] caif: cleanup: remove duplicate checks

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Date:	Mon, 24 May 2010 18:29:34 +0200
From:	Dan Carpenter <error27@...il.com>
To:	walter harms <wharms@....de>
Cc:	netdev@...r.kernel.org,
	Sjur Braendeland <sjur.brandeland@...ricsson.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	kernel-janitors@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>
Subject: [patch v2] caif: cleanup: remove duplicate checks

"phyinfo" can never be null here because we assigned it an address, so I
removed both the assert and the second check inside the if statement.  I
removed the "phyinfo->phy_layer != NULL" check as well because that was
asserted earlier.

Walter Harms suggested I move the "phyinfo->phy_ref_count++;" outside
the if condition for readability, so I have done that.

Signed-off-by: Dan Carpenter <error27@...il.com>
---
The original code increments phyinfo->phy_ref_count++ even if
phyinfo->phy_layer->modemcmd is NULL.  I kept it the same in my code,
but maybe I should change that?

v2: Removed an assert.  Moved the increment outside the if condition.

diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index df43f26..7c81974 100644
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -308,19 +308,15 @@ cfcnfg_linkup_rsp(struct cflayer *layer, u8 channel_id, enum cfctrl_srv serv,
 	caif_assert(cnfg != NULL);
 	caif_assert(phyid != 0);
 	phyinfo = &cnfg->phy_layers[phyid];
-	caif_assert(phyinfo != NULL);
 	caif_assert(phyinfo->id == phyid);
 	caif_assert(phyinfo->phy_layer != NULL);
 	caif_assert(phyinfo->phy_layer->id == phyid);
 
-	if (phyinfo != NULL &&
-	    phyinfo->phy_ref_count++ == 0 &&
-	    phyinfo->phy_layer != NULL &&
+	phyinfo->phy_ref_count++;
+	if (phyinfo->phy_ref_count == 1 &&
 	    phyinfo->phy_layer->modemcmd != NULL) {
-		caif_assert(phyinfo->phy_layer->id == phyid);
 		phyinfo->phy_layer->modemcmd(phyinfo->phy_layer,
 					     _CAIF_MODEMCMD_PHYIF_USEFULL);
-
 	}
 	adapt_layer->id = channel_id;
 
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