remove dead stores and newly created unused variables.

Found by LLVM/Clang Static Analyzer.

ok henning@ brad@

5 files changed, 7 insertions, 17 deletions

diff --git a/sys/dev/pci/if_em.c b/sys/dev/pci/if_em.c
index a4ebc80d7bb..f52e92bec1f 100644
--- a/sys/dev/pci/if_em.c
+++ b/sys/dev/pci/if_em.c
@@ -31,7 +31,7 @@ POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
 
-/* $OpenBSD: if_em.c,v 1.187 2008/08/29 23:28:34 brad Exp $ */
+/* $OpenBSD: if_em.c,v 1.188 2008/09/24 19:12:59 chl Exp $ */
 /* $FreeBSD: if_em.c,v 1.46 2004/09/29 18:28:28 mlaier Exp $ */
 
 #include <dev/pci/if_em.h>
@@ -2420,11 +2420,9 @@ em_initialize_receive_unit(struct em_softc *sc)
 {
 	u_int32_t	reg_rctl;
 	u_int32_t	reg_rxcsum;
-	struct ifnet	*ifp;
 	u_int64_t	bus_addr;
 
 	INIT_DEBUGOUT("em_initialize_receive_unit: begin");
-	ifp = &sc->interface_data.ac_if;
 
 	/* Make sure receives are disabled while setting up the descriptor ring */
 	E1000_WRITE_REG(&sc->hw, RCTL, 0);
diff --git a/sys/dev/pci/if_em_hw.c b/sys/dev/pci/if_em_hw.c
index 8ee16f6b9f6..9285f58f6f5 100644
--- a/sys/dev/pci/if_em_hw.c
+++ b/sys/dev/pci/if_em_hw.c
@@ -31,7 +31,7 @@
 
 *******************************************************************************/
 
-/* $OpenBSD: if_em_hw.c,v 1.29 2008/03/21 00:20:55 brad Exp $ */
+/* $OpenBSD: if_em_hw.c,v 1.30 2008/09/24 19:12:59 chl Exp $ */
 
 /* if_em_hw.c
  * Shared functions for accessing and configuring the MAC
@@ -243,7 +243,6 @@ em_set_phy_type(struct em_hw *hw)
 static void
 em_phy_init_script(struct em_hw *hw)
 {
-    uint32_t ret_val;
     uint16_t phy_saved_data;
 
     DEBUGFUNC("em_phy_init_script");
@@ -253,7 +252,7 @@ em_phy_init_script(struct em_hw *hw)
 
         /* Save off the current value of register 0x2F5B to be restored at
          * the end of this routine. */
-        ret_val = em_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
+        em_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
 
         /* Disabled the PHY transmitter */
         em_write_phy_reg(hw, 0x2F5B, 0x0003);
diff --git a/sys/dev/pci/if_ixgb.c b/sys/dev/pci/if_ixgb.c
index 648ac634aa4..14ec3f9757f 100644
--- a/sys/dev/pci/if_ixgb.c
+++ b/sys/dev/pci/if_ixgb.c
@@ -31,7 +31,7 @@ POSSIBILITY OF SUCH DAMAGE.
 
 ***************************************************************************/
 
-/* $OpenBSD: if_ixgb.c,v 1.45 2008/09/10 14:01:22 blambert Exp $ */
+/* $OpenBSD: if_ixgb.c,v 1.46 2008/09/24 19:12:59 chl Exp $ */
 
 #include <dev/pci/if_ixgb.h>
 
@@ -1475,11 +1475,8 @@ ixgb_get_buf(struct ixgb_softc *sc, int i,
 {
 	struct mbuf *mp = nmp;
 	struct ixgb_buffer *rx_buffer;
-	struct ifnet   *ifp;
 	int             error;
 
-	ifp = &sc->interface_data.ac_if;
-
 	if (mp == NULL) {
 		MGETHDR(mp, M_DONTWAIT, MT_DATA);
 		if (mp == NULL) {
@@ -1605,11 +1602,8 @@ ixgb_initialize_receive_unit(struct ixgb_softc *sc)
 	u_int32_t       reg_rctl;
 	u_int32_t       reg_rxcsum;
 	u_int32_t       reg_rxdctl;
-	struct ifnet   *ifp;
 	u_int64_t       bus_addr;
 
-	ifp = &sc->interface_data.ac_if;
-
 	/*
 	 * Make sure receives are disabled while setting up the descriptor
 	 * ring
diff --git a/sys/dev/pci/if_ti.c b/sys/dev/pci/if_ti.c
index c1abaa89262..d78a80f617a 100644
--- a/sys/dev/pci/if_ti.c
+++ b/sys/dev/pci/if_ti.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_ti.c,v 1.86 2008/09/18 15:16:30 naddy Exp $	*/
+/*	$OpenBSD: if_ti.c,v 1.87 2008/09/24 19:12:59 chl Exp $	*/
 
 /*
  * Copyright (c) 1997, 1998, 1999
@@ -1851,7 +1851,6 @@ ti_rxeof(struct ti_softc *sc)
 		if ((cur_rx->ti_ip_cksum ^ 0xffff) == 0)
 			sumflags |= M_IPV4_CSUM_IN_OK;
 		m->m_pkthdr.csum_flags = sumflags;
-		sumflags = 0;
 
 		ether_input_mbuf(ifp, m);
 	}
diff --git a/sys/dev/pci/if_xge.c b/sys/dev/pci/if_xge.c
index 0ed947c61e0..8636c04ea33 100644
--- a/sys/dev/pci/if_xge.c
+++ b/sys/dev/pci/if_xge.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_xge.c,v 1.43 2007/09/19 03:50:25 brad Exp $	*/
+/*	$OpenBSD: if_xge.c,v 1.44 2008/09/24 19:12:59 chl Exp $	*/
 /*	$NetBSD: if_xge.c,v 1.1 2005/09/09 10:30:27 ragge Exp $	*/
 
 /*
@@ -1221,7 +1221,7 @@ xge_alloc_txmem(struct xge_softc *sc)
 	/* setup transmit array pointers */
 	txp = (struct txd *)kva;
 	txdp = seg.ds_addr;
-	for (txp = (struct txd *)kva, i = 0; i < NTXDESCS; i++) {
+	for (i = 0; i < NTXDESCS; i++) {
 		sc->sc_txd[i] = txp;
 		sc->sc_txdp[i] = txdp;
 		txp += NTXFRAGS;