From patchwork Mon Oct 19 10:06:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11843987 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C640916BC for ; Mon, 19 Oct 2020 10:19:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A019E22283 for ; Mon, 19 Oct 2020 10:19:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="JKowC+xz"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="u21yGgK+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726544AbgJSKS7 (ORCPT ); Mon, 19 Oct 2020 06:18:59 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:58926 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729074AbgJSKSR (ORCPT ); Mon, 19 Oct 2020 06:18:17 -0400 Message-Id: <20201019101110.744172050@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1603102695; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=eU49tVESfPvybwx3L3Wh92XZvOJJ4zNGI0TkIeEUK1M=; b=JKowC+xz19F02CLEO24JMjrb4u0kEcj+L8t99YbWx+w5UvTUx/WsjiX23lHjEfawj8L1Ai MebzdHR9mnykV00sB05zLHuFW9/4veKDWkEkx9kzZPaz81vDGOIp1dnbjmBKpzlDo41RK0 rQdw6sMqR+l6kv313t8o5e9e2W0tlqh29gMfTPAV5RD0WA3MqD1E52hA7tRObbfCZaZpE8 2ZgdvQBM34e+Fvm3kh6wMfPTvxKazGLl/OF84W+pbbvB5RGCNTfqUorwbmPTrODOLv6ovg U6DgzsG6ChAVATvkmPznkzqWwgVurjR4EtKfILDpR9kGCbSd4sv/8wgcljhzSw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1603102695; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=eU49tVESfPvybwx3L3Wh92XZvOJJ4zNGI0TkIeEUK1M=; b=u21yGgK+RD0O07+cg6Izujgy+wcxtgbrdd1zA0ikisQUXWnsPqdAxfppXCH+m5pMKOnvD+ vbuZ3HsJP3oH0yCA== Date: Mon, 19 Oct 2020 12:06:40 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , "Ahmed S. Darwish" , Sebastian Andrzej Siewior , Felipe Balbi , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Thomas Winischhofer , Johan Hovold , Mathias Nyman , Valentina Manea , Shuah Khan , Alan Stern , linux-omap@vger.kernel.org, Kukjin Kim , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Duncan Sands Subject: [patch V2 11/13] usb: gadget: udc: Remove in_interrupt()/in_irq() from comments References: <20201019100629.419020859@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Ahmed S. Darwish The usage of in_irq()/in_interrupt() in drivers is phased out for various reasons. The context description for usb_gadget_giveback_request() is misleading as in_interupt() means: hard interrupt or soft interrupt or bottom half disabled regions. But it's also invoked from task context when endpoints are torn down. Remove it as it's more confusing than helpful. Replace also the in_irq() comment with plain text. Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: Felipe Balbi Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Acked-by: Alan Stern --- drivers/usb/gadget/udc/core.c | 2 -- drivers/usb/gadget/udc/dummy_hcd.c | 6 ++++-- 2 files changed, 4 insertions(+), 4 deletions(-) --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -894,8 +894,6 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_reque * @ep: the endpoint to be used with with the request * @req: the request being given back * - * Context: in_interrupt() - * * This is called by device controller drivers in order to return the * completed request back to the gadget layer. */ --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -1754,8 +1754,10 @@ static int handle_control_request(struct return ret_val; } -/* drive both sides of the transfers; looks like irq handlers to - * both drivers except the callbacks aren't in_irq(). +/* + * Drive both sides of the transfers; looks like irq handlers to both + * drivers except that the callbacks are invoked from soft interrupt + * context. */ static void dummy_timer(struct timer_list *t) {