From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 04 Oct 2022 09:50:34 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1ofchG-005KoX-69 for lore@lore.pengutronix.de; Tue, 04 Oct 2022 09:50:34 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ofchE-0005Qm-TA for lore@pengutronix.de; Tue, 04 Oct 2022 09:50:33 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=HExPHCtW/dGveNfPraTFR8bmAjOdxNdlBAfbfqng1FE=; b=HeGKT+LzL85hMp3zF+/UNrZBj5 rV/6MBQey9pLhoZzeIO+aP/1g5311w27DbDXtCwrRsPjiaK3ALibhLskXtY85NCY1jVRCBhDyLX18 INim1IdXx29rYNZYcwPn7Pre5YcztBV+hGHPBE+hWJpOh4ioTiqPV4orXm26ECkKwsu+RPN+hhIbF DgV2vlg3m5Q09cioS0/WoEF4LqyDAPMGGAzYCWmIR47qWocP+uzon1CfGkQRe8xTROf1LHT6/1yyz aGUPnvkSbxeSuNdg+KgpVXwliNvnVU+QieZFtkDTu86B/aP2K03UCUkU9SFDte31ii1SEItg97XeY vEdCDCrg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ofcfe-008o7d-Sg; Tue, 04 Oct 2022 07:48:54 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ofcfL-008o6b-V7 for barebox@lists.infradead.org; Tue, 04 Oct 2022 07:48:37 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ofcfK-000574-La; Tue, 04 Oct 2022 09:48:34 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1ofcfK-0004xH-EP; Tue, 04 Oct 2022 09:48:34 +0200 Date: Tue, 4 Oct 2022 09:48:34 +0200 To: Ahmad Fatoum Cc: barebox@lists.infradead.org Message-ID: <20221004074834.GH986@pengutronix.de> References: <20220929100502.895553-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220929100502.895553-1-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221004_004836_024707_BA443E9A X-CRM114-Status: GOOD ( 22.90 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.6 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] usb: have usb_rescan return count of enumerated devices X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Thu, Sep 29, 2022 at 12:05:02PM +0200, Ahmad Fatoum wrote: > Some USB mass storage devices can take a comparatively long time after > vbus is applied until they can be enumerated. Board code can reissue > usb_rescan() to retry enumeration at a later time. It's useful for > board code to check whether any new devices have been detected by a > usb_rescan() call. To facilitate this, have usb_rescan() return the > number of devices found in addition to printing it to the log. > > Signed-off-by: Ahmad Fatoum > --- > drivers/usb/core/usb.c | 4 +++- > include/usb/usb.h | 2 +- > 2 files changed, 4 insertions(+), 2 deletions(-) Applied, thanks Sascha > > diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c > index 34a0f004f7bb..ed3a96cb9e5e 100644 > --- a/drivers/usb/core/usb.c > +++ b/drivers/usb/core/usb.c > @@ -599,7 +599,7 @@ int usb_host_detect(struct usb_host *host) > return 0; > } > > -void usb_rescan(void) > +int usb_rescan(void) > { > struct usb_host *host; > int ret; > @@ -613,6 +613,8 @@ void usb_rescan(void) > } > > pr_info("%d USB Device(s) found\n", dev_count); > + > + return dev_count; > } > > /*------------------------------------------------------------------- > diff --git a/include/usb/usb.h b/include/usb/usb.h > index 39f475091617..04b433ba73ca 100644 > --- a/include/usb/usb.h > +++ b/include/usb/usb.h > @@ -201,7 +201,7 @@ int usb_clear_halt(struct usb_device *dev, int pipe); > int usb_string(struct usb_device *dev, int index, char *buf, size_t size); > int usb_set_interface(struct usb_device *dev, int interface, int alternate); > > -void usb_rescan(void); > +int usb_rescan(void); > > /* big endian -> little endian conversion */ > /* some CPUs are already little endian e.g. the ARM920T */ > -- > 2.30.2 > > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |