From patchwork Fri Mar 1 06:58:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 10834559 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3C0A71669 for ; Fri, 1 Mar 2019 06:59:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 23B952F19F for ; Fri, 1 Mar 2019 06:59:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 159D42A7C9; Fri, 1 Mar 2019 06:59:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BDAE02EF3F for ; Fri, 1 Mar 2019 06:59:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731040AbfCAG6w (ORCPT ); Fri, 1 Mar 2019 01:58:52 -0500 Received: from Mailgw01.mediatek.com ([1.203.163.78]:36907 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726025AbfCAG6v (ORCPT ); Fri, 1 Mar 2019 01:58:51 -0500 X-UUID: a50c64fe4b734e05a855a4783c21c5e9-20190301 X-UUID: a50c64fe4b734e05a855a4783c21c5e9-20190301 Received: from mtkcas35.mediatek.inc [(172.27.4.253)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 410177019; Fri, 01 Mar 2019 14:58:41 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 1 Mar 2019 14:58:39 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 1 Mar 2019 14:58:38 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Felipe Balbi , Mathias Nyman CC: Joel Stanley , Andrew Jeffery , Matthias Brugger , Chunfeng Yun , Yoshihiro Shimoda , Arnd Bergmann , Martin Blumenstingl , Alan Stern , Roger Quadros , Sebastian Andrzej Siewior , "Gustavo A. R. Silva" , Johan Hovold , Benjamin Herrenschmidt , Colin Ian King , Jaejoong Kim , , , , , Subject: [PATCH] usb: introduce usb_ep_type_string() function Date: Fri, 1 Mar 2019 14:58:23 +0800 Message-ID: X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In some places, the code prints a human-readable USB endpoint transfer type (e.g. "bulk"). This involves a switch statement sometimes wrapped around in ({ ... }) block leading to code repetition. To make this scenario easier, here introduces usb_ep_type_string() function, which returns a human-readable name of provided endpoint type. It also changes a few places switch was used to use this new function. Signed-off-by: Chunfeng Yun --- drivers/usb/common/common.c | 16 ++++++++++++++++ drivers/usb/core/endpoint.c | 18 ++---------------- drivers/usb/core/hcd.c | 17 ++--------------- drivers/usb/dwc3/debugfs.c | 23 ++++------------------- drivers/usb/gadget/udc/aspeed-vhub/epn.c | 6 +----- drivers/usb/gadget/udc/dummy_hcd.c | 16 +--------------- drivers/usb/host/xhci-trace.h | 19 ++----------------- include/linux/usb/ch9.h | 8 ++++++++ 8 files changed, 36 insertions(+), 87 deletions(-) diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index 48277bbc15e4..2174dd9ec176 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -16,6 +16,22 @@ #include #include +static const char *const ep_type_names[] = { + [USB_ENDPOINT_XFER_CONTROL] = "ctrl", + [USB_ENDPOINT_XFER_ISOC] = "isoc", + [USB_ENDPOINT_XFER_BULK] = "bulk", + [USB_ENDPOINT_XFER_INT] = "intr", +}; + +const char *usb_ep_type_string(int ep_type) +{ + if (ep_type < 0 || ep_type >= ARRAY_SIZE(ep_type_names)) + return "unknown"; + + return ep_type_names[ep_type]; +} +EXPORT_SYMBOL_GPL(usb_ep_type_string); + const char *usb_otg_state_string(enum usb_otg_state state) { static const char *const names[] = { diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index 1c2c04079676..afa43f9a47b2 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -60,23 +60,9 @@ static ssize_t type_show(struct device *dev, struct device_attribute *attr, char *buf) { struct ep_device *ep = to_ep_device(dev); - char *type = "unknown"; + int ep_type = usb_endpoint_type(ep->desc); - switch (usb_endpoint_type(ep->desc)) { - case USB_ENDPOINT_XFER_CONTROL: - type = "Control"; - break; - case USB_ENDPOINT_XFER_ISOC: - type = "Isoc"; - break; - case USB_ENDPOINT_XFER_BULK: - type = "Bulk"; - break; - case USB_ENDPOINT_XFER_INT: - type = "Interrupt"; - break; - } - return sprintf(buf, "%s\n", type); + return sprintf(buf, "%s\n", usb_ep_type_string(ep_type)); } static DEVICE_ATTR_RO(type); diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 015b126ce455..193ee92b2fdb 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1875,23 +1875,10 @@ void usb_hcd_flush_endpoint(struct usb_device *udev, /* kick hcd */ unlink1(hcd, urb, -ESHUTDOWN); dev_dbg (hcd->self.controller, - "shutdown urb %pK ep%d%s%s\n", + "shutdown urb %pK ep%d%s-%s\n", urb, usb_endpoint_num(&ep->desc), is_in ? "in" : "out", - ({ char *s; - - switch (usb_endpoint_type(&ep->desc)) { - case USB_ENDPOINT_XFER_CONTROL: - s = ""; break; - case USB_ENDPOINT_XFER_BULK: - s = "-bulk"; break; - case USB_ENDPOINT_XFER_INT: - s = "-intr"; break; - default: - s = "-iso"; break; - }; - s; - })); + usb_ep_type_string(usb_endpoint_type(&ep->desc))); usb_put_urb (urb); /* list contents may have changed */ diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 1c792710348f..d9e2a63835fe 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -750,28 +750,13 @@ static int dwc3_transfer_type_show(struct seq_file *s, void *unused) unsigned long flags; spin_lock_irqsave(&dwc->lock, flags); - if (!(dep->flags & DWC3_EP_ENABLED) || - !dep->endpoint.desc) { - seq_printf(s, "--\n"); + if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) { + seq_puts(s, "unknown\n"); goto out; } - switch (usb_endpoint_type(dep->endpoint.desc)) { - case USB_ENDPOINT_XFER_CONTROL: - seq_printf(s, "control\n"); - break; - case USB_ENDPOINT_XFER_ISOC: - seq_printf(s, "isochronous\n"); - break; - case USB_ENDPOINT_XFER_BULK: - seq_printf(s, "bulk\n"); - break; - case USB_ENDPOINT_XFER_INT: - seq_printf(s, "interrupt\n"); - break; - default: - seq_printf(s, "--\n"); - } + seq_printf(s, "%s\n", + usb_ep_type_string(usb_endpoint_type(dep->endpoint.desc))); out: spin_unlock_irqrestore(&dwc->lock, flags); diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c index 4a28e3fbeb0b..165b0a43670e 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c @@ -593,10 +593,6 @@ static int ast_vhub_epn_disable(struct usb_ep* u_ep) static int ast_vhub_epn_enable(struct usb_ep* u_ep, const struct usb_endpoint_descriptor *desc) { - static const char *ep_type_string[] __maybe_unused = { "ctrl", - "isoc", - "bulk", - "intr" }; struct ast_vhub_ep *ep = to_ast_ep(u_ep); struct ast_vhub_dev *dev; struct ast_vhub *vhub; @@ -646,7 +642,7 @@ static int ast_vhub_epn_enable(struct usb_ep* u_ep, ep->epn.wedged = false; EPDBG(ep, "Enabling [%s] %s num %d maxpacket=%d\n", - ep->epn.is_in ? "in" : "out", ep_type_string[type], + ep->epn.is_in ? "in" : "out", usb_ep_type_string(type), usb_endpoint_num(desc), maxpacket); /* Can we use DMA descriptor mode ? */ diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index baf72f95f0f1..40c6a484e232 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -617,21 +617,7 @@ static int dummy_enable(struct usb_ep *_ep, _ep->name, desc->bEndpointAddress & 0x0f, (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", - ({ char *val; - switch (usb_endpoint_type(desc)) { - case USB_ENDPOINT_XFER_BULK: - val = "bulk"; - break; - case USB_ENDPOINT_XFER_ISOC: - val = "iso"; - break; - case USB_ENDPOINT_XFER_INT: - val = "intr"; - break; - default: - val = "ctrl"; - break; - } val; }), + usb_ep_type_string(usb_endpoint_type(desc)), max, ep->stream_en ? "enabled" : "disabled"); /* at this point real hardware should be NAKing transfers diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index 88b427434bd8..bac73d688f11 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -289,23 +289,8 @@ DECLARE_EVENT_CLASS(xhci_log_urb, ), TP_printk("ep%d%s-%s: urb %p pipe %u slot %d length %d/%d sgs %d/%d stream %d flags %08x", __entry->epnum, __entry->dir_in ? "in" : "out", - ({ char *s; - switch (__entry->type) { - case USB_ENDPOINT_XFER_INT: - s = "intr"; - break; - case USB_ENDPOINT_XFER_CONTROL: - s = "control"; - break; - case USB_ENDPOINT_XFER_BULK: - s = "bulk"; - break; - case USB_ENDPOINT_XFER_ISOC: - s = "isoc"; - break; - default: - s = "UNKNOWN"; - } s; }), __entry->urb, __entry->pipe, __entry->slot_id, + usb_ep_type_string(__entry->type), + __entry->urb, __entry->pipe, __entry->slot_id, __entry->actual, __entry->length, __entry->num_mapped_sgs, __entry->num_sgs, __entry->stream, __entry->flags ) diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h index 523aa088f6ab..da82606be605 100644 --- a/include/linux/usb/ch9.h +++ b/include/linux/usb/ch9.h @@ -36,6 +36,14 @@ #include #include +/** + * usb_ep_type_string() - Returns human readable-name of the endpoint type. + * @ep_type: The endpoint type to return human-readable name for. If it's not + * any of the types: USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT}, + * usually got by usb_endpoint_type(), the string 'unknown' will be returned. + */ +extern const char *usb_ep_type_string(int ep_type); + /** * usb_speed_string() - Returns human readable-name of the speed. * @speed: The speed to return human-readable name for. If it's not