From patchwork Wed Oct 14 14:52:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11837923 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 351D714B2 for ; Wed, 14 Oct 2020 15:20:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CA3D22203 for ; Wed, 14 Oct 2020 15:20:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="frIAhV5z"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="HKHZebV/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389177AbgJNPUH (ORCPT ); Wed, 14 Oct 2020 11:20:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731801AbgJNPS7 (ORCPT ); Wed, 14 Oct 2020 11:18:59 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0671DC061755; Wed, 14 Oct 2020 08:18:59 -0700 (PDT) Message-Id: <20201014145727.957664398@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1602688736; 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=vwW4ioJK9iO/olIrRXTRGmM3ltJD08Kl75Jr29q8k1c=; b=frIAhV5zZRLyu3T3WeNS+86gEvbubYIX3DCA1EMG9dc6PZQ8/zJZ6mXGPll+enKHUU8nkq xcVDhKkvocjjmIOY1XBkDAo9RNne1g5EFZ81THNW8Q9ZhN30lr+kirb5Xdw51lNOMnVt3f xF91fW7Cm/IuiAm6AimnCv4pScxH9VZi6ZQM0l91yf9wIMvUICluUVu9V5Ie/fDKdG2Zic DbLjL0JNo4n86hIgO4YMri7GJpHpz/CopeqMTUsbVX9TySkCbLGm/Hx9em4XAr4Zpry0/J VKP7DyaiQucQhNxbQeISGqQkm8CCmG1H7sZqc1rHL9dMcQukLLo7T2jkHUCr4g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1602688736; 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=vwW4ioJK9iO/olIrRXTRGmM3ltJD08Kl75Jr29q8k1c=; b=HKHZebV/VaTYhcE31MdsfD21ZcCC48DoK29bd201boCh/A3nNi6rLQZDAA4ytY36wApFt1 zQhnU3J+aNK8qODw== Date: Wed, 14 Oct 2020 16:52:23 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , "Ahmed S. Darwish" , Sebastian Andrzej Siewior , Alan Stern , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-omap@vger.kernel.org, Kukjin Kim , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Thomas Winischhofer , Johan Hovold , Mathias Nyman , Valentina Manea , Shuah Khan , Felipe Balbi , Duncan Sands Subject: [patch 08/12] usb: hosts: Remove in_interrupt() from comments References: <20201014145215.518912759@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_interrupt() in drivers is phased out for various reasons. Various comments use !in_interrupt() to describe calling context for probe() and remove() functions. That's wrong because the calling context has to be preemptible task context, which is not what !in_interrupt() describes. Cleanup the comments. While at it add the missing kernel doc argument descriptors and make usb_hcd_msp_remove() static. Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: Alan Stern Cc: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org Cc: linux-omap@vger.kernel.org Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Acked-by: Krzysztof Kozlowski --- drivers/usb/host/ehci-fsl.c | 9 ++++----- drivers/usb/host/ehci-pmcmsp.c | 15 +++++++++------ drivers/usb/host/ohci-at91.c | 11 ++++++++--- drivers/usb/host/ohci-omap.c | 7 ++++--- drivers/usb/host/ohci-pxa27x.c | 11 ++++++----- drivers/usb/host/ohci-s3c2410.c | 12 ++++++------ 6 files changed, 37 insertions(+), 28 deletions(-) --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -39,10 +39,10 @@ static struct hc_driver __read_mostly fs /* * fsl_ehci_drv_probe - initialize FSL-based HCDs * @pdev: USB Host Controller being probed - * Context: !in_interrupt() * - * Allocates basic resources for this USB host controller. + * Context: task context, might sleep * + * Allocates basic resources for this USB host controller. */ static int fsl_ehci_drv_probe(struct platform_device *pdev) { @@ -684,12 +684,11 @@ static const struct ehci_driver_override /** * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs * @pdev: USB Host Controller being removed - * Context: !in_interrupt() * - * Reverses the effect of usb_hcd_fsl_probe(). + * Context: task context, might sleep * + * Reverses the effect of usb_hcd_fsl_probe(). */ - static int fsl_ehci_drv_remove(struct platform_device *pdev) { struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); --- a/drivers/usb/host/ehci-pmcmsp.c +++ b/drivers/usb/host/ehci-pmcmsp.c @@ -147,12 +147,14 @@ static int usb_hcd_msp_map_regs(struct m /** * usb_hcd_msp_probe - initialize PMC MSP-based HCDs - * Context: !in_interrupt() + * @driver: Pointer to hc driver instance + * @dev: USB controller to probe + * + * Context: task context, might sleep * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it * through the hotplug entry's driver_data. - * */ int usb_hcd_msp_probe(const struct hc_driver *driver, struct platform_device *dev) @@ -223,8 +225,9 @@ int usb_hcd_msp_probe(const struct hc_dr /** * usb_hcd_msp_remove - shutdown processing for PMC MSP-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() + * @hcd: USB Host Controller being removed + * + * Context: task context, might sleep * * Reverses the effect of usb_hcd_msp_probe(), first invoking * the HCD's stop() method. It is always called from a thread @@ -233,7 +236,7 @@ int usb_hcd_msp_probe(const struct hc_dr * may be called without controller electrically present * may be called with controller, bus, and devices active */ -void usb_hcd_msp_remove(struct usb_hcd *hcd, struct platform_device *dev) +static void usb_hcd_msp_remove(struct usb_hcd *hcd) { usb_remove_hcd(hcd); iounmap(hcd->regs); @@ -306,7 +309,7 @@ static int ehci_hcd_msp_drv_remove(struc { struct usb_hcd *hcd = platform_get_drvdata(pdev); - usb_hcd_msp_remove(hcd, pdev); + usb_hcd_msp_remove(hcd); /* free TWI GPIO USB_HOST_DEV pin */ gpio_free(MSP_PIN_USB0_HOST_DEV); --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -155,7 +155,10 @@ static struct regmap *at91_dt_syscon_sfr /* * usb_hcd_at91_probe - initialize AT91-based HCDs - * Context: !in_interrupt() + * @driver: Pointer to hc driver instance + * @pdev: USB controller to probe + * + * Context: task context, might sleep * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it @@ -246,12 +249,14 @@ static int usb_hcd_at91_probe(const stru /* * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs - * Context: !in_interrupt() + * @hcd: USB controller to remove + * @pdev: Platform device required for cleanup + * + * Context: task context, might sleep * * Reverses the effect of usb_hcd_at91_probe(), first invoking * the HCD's stop() method. It is always called from a thread * context, "rmmod" or something similar. - * */ static void usb_hcd_at91_remove(struct usb_hcd *hcd, struct platform_device *pdev) --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -285,7 +285,9 @@ static int ohci_omap_reset(struct usb_hc /** * ohci_hcd_omap_probe - initialize OMAP-based HCDs - * Context: !in_interrupt() + * @pdev: USB controller to probe + * + * Context: task context, might sleep * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it @@ -399,8 +401,7 @@ static int ohci_hcd_omap_probe(struct pl /** * ohci_hcd_omap_remove - shutdown processing for OMAP-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() + * @pdev: USB Host Controller being removed * * Reverses the effect of ohci_hcd_omap_probe(), first invoking * the HCD's stop() method. It is always called from a thread --- a/drivers/usb/host/ohci-pxa27x.c +++ b/drivers/usb/host/ohci-pxa27x.c @@ -410,12 +410,13 @@ static int ohci_pxa_of_init(struct platf /** * ohci_hcd_pxa27x_probe - initialize pxa27x-based HCDs - * Context: !in_interrupt() + * @pdev: USB Host controller to probe + * + * Context: task context, might sleep * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it * through the hotplug entry's driver_data. - * */ static int ohci_hcd_pxa27x_probe(struct platform_device *pdev) { @@ -509,13 +510,13 @@ static int ohci_hcd_pxa27x_probe(struct /** * ohci_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() + * @pdev: USB Host Controller being removed + * + * Context: task context, might sleep * * Reverses the effect of ohci_hcd_pxa27x_probe(), first invoking * the HCD's stop() method. It is always called from a thread * context, normally "rmmod", "apmd", or something similar. - * */ static int ohci_hcd_pxa27x_remove(struct platform_device *pdev) { --- a/drivers/usb/host/ohci-s3c2410.c +++ b/drivers/usb/host/ohci-s3c2410.c @@ -324,14 +324,13 @@ static void s3c2410_hcd_oc(struct s3c241 /* * ohci_hcd_s3c2410_remove - shutdown processing for HCD * @dev: USB Host Controller being removed - * Context: !in_interrupt() + * + * Context: task context, might sleep * * Reverses the effect of ohci_hcd_3c2410_probe(), first invoking * the HCD's stop() method. It is always called from a thread * context, normally "rmmod", "apmd", or something similar. - * -*/ - + */ static int ohci_hcd_s3c2410_remove(struct platform_device *dev) { @@ -345,12 +344,13 @@ ohci_hcd_s3c2410_remove(struct platform_ /* * ohci_hcd_s3c2410_probe - initialize S3C2410-based HCDs - * Context: !in_interrupt() + * @dev: USB Host Controller to be probed + * + * Context: task context, might sleep * * Allocates basic resources for this USB host controller, and * then invokes the start() method for the HCD associated with it * through the hotplug entry's driver_data. - * */ static int ohci_hcd_s3c2410_probe(struct platform_device *dev) {