From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v3] usb/hcd: Send a uevent signaling that the host controller had died From: Raul E Rangel Message-Id: <20190417202017.GA204974@google.com> Date: Wed, 17 Apr 2019 14:20:17 -0600 To: Alan Stern Cc: linux-usb@vger.kernel.org, groeck@chromium.org, oneukum@suse.com, djkurtz@chromium.org, zwisler@chromium.org, Sebastian Andrzej Siewior , Martin Blumenstingl , Dmitry Torokhov , linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" , Miquel Raynal , Johan Hovold , Greg Kroah-Hartman , Mathias Nyman , Raul Rangel List-ID: T24gV2VkLCBBcHIgMTcsIDIwMTkgYXQgMDM6MTQ6MTRQTSAtMDQwMCwgQWxhbiBTdGVybiB3cm90 ZToKPiBPbiBXZWQsIDE3IEFwciAyMDE5LCBSYXVsIEUgUmFuZ2VsIHdyb3RlOgo+IAo+ID4gKy8q IFdvcmtxdWV1ZSByb3V0aW5lIGZvciB3aGVuIHRoZSByb290LWh1YiBoYXMgZGllZC4gKi8KPiA+ ICtzdGF0aWMgdm9pZCBoY2RfZGllZF93b3JrKHN0cnVjdCB3b3JrX3N0cnVjdCAqd29yaykKPiA+ ICt7Cj4gPiArCXN0cnVjdCB1c2JfaGNkICpoY2QgPSBjb250YWluZXJfb2Yod29yaywgc3RydWN0 IHVzYl9oY2QsIGRpZWRfd29yayk7Cj4gPiArCWNoYXIgKmVudltdID0gewo+ID4gKwkJIkVSUk9S PURFQUQiLAo+ID4gKwkJTlVMTAo+ID4gKwl9Owo+IAo+IFRoaXMgY2FuIG5vdyBiZQo+IAo+IAlz dGF0aWMgY29uc3QgY2hhciAqZW52W10gPSAuLi4KPiAKPiByaWdodD8gIFRoZXJlJ3Mgbm8gbmVl ZCBmb3IgdGhlIGFycmF5IHRvIGJlIHJlaW5pdGlhbGl6ZWQgZXZlcnkgdGltZSAKPiB0aGUgcm91 dGluZSBydW5zLgpJIG9yaWdpbmFsbHkgdHJpZWQgdG8gbWFrZSBpdCBjb25zdCwgYnV0IGtvYmpl Y3RfdWV2ZW50X2VudiBkb2Vzbid0CmRlY2xhcmUgdGhlIHBhcmFtZXRlciBhcyBjb25zdCwgc28g dGhlIGNvbXBpbGVyIHllbGxlZCBhdCBtZS4gSSBjb3VsZAptYWtlIGl0IHN0YXRpYywgYnV0IGEg c3RhdGljIHdpdGhvdXQgYSBjb25zdCBtYWtlcyBtZSB3YXJ5LiBJIGNhbiBhZGQgaXQKaWYgeW91 IHRoaW5rIGl0J3MgZmluZS4KPiAKPiBBbGFuIFN0ZXJuCj4K From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2CD94C282DA for ; Wed, 17 Apr 2019 20:20:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 01E48206BA for ; Wed, 17 Apr 2019 20:20:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729898AbfDQUUY (ORCPT ); Wed, 17 Apr 2019 16:20:24 -0400 Received: from mail-io1-f68.google.com ([209.85.166.68]:40867 "EHLO mail-io1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727340AbfDQUUY (ORCPT ); Wed, 17 Apr 2019 16:20:24 -0400 Received: by mail-io1-f68.google.com with SMTP id d201so117272iof.7 for ; Wed, 17 Apr 2019 13:20:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=O4pCrnxLXWayh/eepptBQW+yvPCJPF417E+knnis96Q=; b=nhTQFu5CBDOsQZ0ciENLlZGQIVNY2Ili/7HsKcPKdX4NoUXAJ3cfA9otQNYWbgOCkA S4WFzWfYqNVhUhmRBaHWYEbf0YRaQxLHNN+n4xaeQNuSPqWKCNwn6s+CkVKQ+T4/oN9Q F1lxtU7hCWVhosp6RDOIz5tNYV+3xqglJNjWmzQj6WS6YV5VhF4VWdvMOttbkq5LZ0bp D0XcpzElC1Xji53E4OzucYj164sLM02M+1xxdDX28lPjEIUtpMlsJ48SoSggyfYCeX0L CvJewR7QLuKjD1m16KvfiqI1HaXcQB+txy6E+gOvaJEUrA+W301SAl3jN+mZcHBPeSDo 1P9w== X-Gm-Message-State: APjAAAWI879BJSzjvXsOgbjtuFzq1tv8Hktz8aJXtLpf8SdcZE3MxaDc g4N8orrP2jeTarDzjmhciiKchA== X-Google-Smtp-Source: APXvYqz+me+cP4Ktrbn6nkL/GPEtxv/ewXmQLOGL4/VoTgWPqzsYP67GYpTqH2mQkfAdAue/TZ4TwA== X-Received: by 2002:a5d:84d9:: with SMTP id z25mr1273052ior.301.1555532423359; Wed, 17 Apr 2019 13:20:23 -0700 (PDT) Received: from google.com ([2620:15c:183:0:20b8:dee7:5447:d05]) by smtp.gmail.com with ESMTPSA id t67sm1767160ita.35.2019.04.17.13.20.21 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 17 Apr 2019 13:20:22 -0700 (PDT) Date: Wed, 17 Apr 2019 14:20:17 -0600 From: Raul Rangel To: Alan Stern Cc: linux-usb@vger.kernel.org, groeck@chromium.org, oneukum@suse.com, djkurtz@chromium.org, zwisler@chromium.org, Sebastian Andrzej Siewior , Martin Blumenstingl , Dmitry Torokhov , linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" , Miquel Raynal , Johan Hovold , Greg Kroah-Hartman , Mathias Nyman , Raul Rangel Subject: Re: [PATCH v3] usb/hcd: Send a uevent signaling that the host controller had died Message-ID: <20190417202017.GA204974@google.com> References: <20190417190316.10032-1-rrangel@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Message-ID: <20190417202017.X_iAk7_TSAbGRbmdCDLxactGNbQiOQL9MIH_7gNE0VI@z> On Wed, Apr 17, 2019 at 03:14:14PM -0400, Alan Stern wrote: > On Wed, 17 Apr 2019, Raul E Rangel wrote: > > > +/* Workqueue routine for when the root-hub has died. */ > > +static void hcd_died_work(struct work_struct *work) > > +{ > > + struct usb_hcd *hcd = container_of(work, struct usb_hcd, died_work); > > + char *env[] = { > > + "ERROR=DEAD", > > + NULL > > + }; > > This can now be > > static const char *env[] = ... > > right? There's no need for the array to be reinitialized every time > the routine runs. I originally tried to make it const, but kobject_uevent_env doesn't declare the parameter as const, so the compiler yelled at me. I could make it static, but a static without a const makes me wary. I can add it if you think it's fine. > > Alan Stern >