[src/trunk]: src/sys/dev/pci be more cautious about error exit path. nuke unu...

[nisimura <nisimura%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/91166bcd6cc3
branches:  trunk
changeset: 938931:91166bcd6cc3
user:      nisimura <nisimura%NetBSD.org@localhost>
date:      Sun Sep 20 17:59:42 2020 +0000

description:
be more cautious about error exit path. nuke unused variables

diffstat:

 sys/dev/pci/if_kse.c |  41 +++++++++++++++--------------------------
 1 files changed, 15 insertions(+), 26 deletions(-)

diffs (128 lines):

diff -r 149689ae98c9 -r 91166bcd6cc3 sys/dev/pci/if_kse.c
--- a/sys/dev/pci/if_kse.c      Sun Sep 20 16:54:16 2020 +0000
+++ b/sys/dev/pci/if_kse.c      Sun Sep 20 17:59:42 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_kse.c,v 1.53 2020/04/01 04:00:14 nisimura Exp $     */
+/*     $NetBSD: if_kse.c,v 1.54 2020/09/20 17:59:42 nisimura Exp $     */
 
 /*-
  * Copyright (c) 2006 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_kse.c,v 1.53 2020/04/01 04:00:14 nisimura Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_kse.c,v 1.54 2020/09/20 17:59:42 nisimura Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -258,10 +258,7 @@
        uint32_t sc_t1csum;
        int sc_mcsum;
        uint32_t sc_inten;
-
        uint32_t sc_chip;
-       uint8_t sc_altmac[16][ETHER_ADDR_LEN];
-       uint16_t sc_vlan[16];
 
 #ifdef KSE_EVENT_COUNTERS
        struct ksext {
@@ -406,7 +403,7 @@
        /* Map and establish our interrupt. */
        if (pci_intr_map(pa, &ih)) {
                aprint_error_dev(self, "unable to map interrupt\n");
-               return;
+               goto fail;
        }
        intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
        sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_NET, kse_intr, sc,
@@ -416,7 +413,7 @@
                if (intrstr != NULL)
                        aprint_error(" at %s", intrstr);
                aprint_error("\n");
-               return;
+               goto fail;
        }
        aprint_normal_dev(self, "interrupting at %s\n", intrstr);
 
@@ -502,13 +499,6 @@
                sc->sc_rxsoft[i].rxs_mbuf = NULL;
        }
 
-       callout_init(&sc->sc_tick_ch, 0);
-       callout_init(&sc->sc_stat_ch, 0);
-       callout_setfunc(&sc->sc_tick_ch, phy_tick, sc);
-#ifdef KSE_EVENT_COUNTERS
-       callout_setfunc(&sc->sc_stat_ch, stat_tick, sc);
-#endif
-
        mii->mii_ifp = ifp;
        mii->mii_readreg = kse_mii_readreg;
        mii->mii_writereg = kse_mii_writereg;
@@ -548,7 +538,6 @@
        }
        ifm->ifm_media = ifm->ifm_cur->ifm_media; /* as if user has requested */
 
-
        strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ);
        ifp->if_softc = sc;
        ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
@@ -573,6 +562,9 @@
        if_deferred_start_init(ifp, NULL);
        ether_ifattach(ifp, enaddr);
 
+       callout_init(&sc->sc_tick_ch, 0);
+       callout_setfunc(&sc->sc_tick_ch, phy_tick, sc);
+
 #ifdef KSE_EVENT_COUNTERS
        int p = (sc->sc_chip == 0x8842) ? 3 : 1;
        for (i = 0; i < p; i++) {
@@ -648,6 +640,8 @@
                evcnt_attach_dynamic(&ee->pev[i][33], EVCNT_TYPE_MISC,
                    NULL, ee->evcntname[i], "RxDropPkts");
        }
+       callout_init(&sc->sc_stat_ch, 0);
+       callout_setfunc(&sc->sc_stat_ch, stat_tick, sc);
 #endif
        return;
 
@@ -672,14 +666,9 @@
  fail_1:
        bus_dmamem_free(sc->sc_dmat, &seg, nseg);
  fail_0:
-       if (sc->sc_ih != NULL) {
-               pci_intr_disestablish(pc, sc->sc_ih);
-               sc->sc_ih = NULL;
-       }
-       if (sc->sc_memsize) {
-               bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_memsize);
-               sc->sc_memsize = 0;
-       }
+       pci_intr_disestablish(pc, sc->sc_ih);
+ fail:
+       bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_memsize);
        return;
 }
 
@@ -712,11 +701,10 @@
                error = ifmedia_ioctl(ifp, ifr, ifm, cmd);
                break;
        default:
-               if ((error = ether_ioctl(ifp, cmd, data)) != ENETRESET)
+               error = ether_ioctl(ifp, cmd, data);
+               if (error != ENETRESET)
                        break;
-
                error = 0;
-
                if (cmd == SIOCSIFCAP)
                        error = (*ifp->if_init)(ifp);
                if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI)
@@ -732,6 +720,7 @@
        }
 
        splx(s);
+
        return error;
 }