[Bug 229510] src/sys/arm/freescale/vybrid/vf_ehci.c:393: duplicate condition ?

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Jul 4 10:41:03 UTC 2018


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=229510

            Bug ID: 229510
           Summary: src/sys/arm/freescale/vybrid/vf_ehci.c:393: duplicate
                    condition ?
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: arm
          Assignee: freebsd-arm at FreeBSD.org
          Reporter: dcb314 at hotmail.com

src/sys/arm/freescale/vybrid/vf_ehci.c:393] ->
[src/sys/arm/freescale/vybrid/vf_ehci.c:399]: (warning) Identical condition
'sc->sc_flags&EHCI_SCFLG_DONEINIT', second condition is always false

Source code is

        if (sc->sc_flags & EHCI_SCFLG_DONEINIT)
                return (0);

        /*
         * only call ehci_detach() after ehci_init()
         */
        if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
                ehci_detach(sc);
                sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
        }

Is the sc_flags field volatile and is changed by some other thread ?

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