From patchwork Thu Dec 2 09:53:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 519965 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80820C433F5 for ; Thu, 2 Dec 2021 09:54:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356912AbhLBJ5m (ORCPT ); Thu, 2 Dec 2021 04:57:42 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:52232 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241080AbhLBJ5H (ORCPT ); Thu, 2 Dec 2021 04:57:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638438823; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Kj9zMm+zAL1WWOfU9rtJ9ZDFeM3bY3eWl1NrUXuGVTA=; b=Itej58EsB93PwQBNF1gFktBtgPSNb9jTl45JoSThP5TopskdVB6pDv+Xe9HJr+M97l7Qcv BglQVScT5OBpnESiDGwIl/QQggD+wlXs5EHO1zfqm2K2wRQpsH540XF/e4967omxmZ23Fs frGpMUJY2CKvu/kGAnNDFwwQ+1qB1lk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-601-KDLgE4XxOqm0rxKfmwXwHQ-1; Thu, 02 Dec 2021 04:53:40 -0500 X-MC-Unique: KDLgE4XxOqm0rxKfmwXwHQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8192E100C667; Thu, 2 Dec 2021 09:53:39 +0000 (UTC) Received: from xps-13.redhat.com (unknown [10.39.195.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1178319729; Thu, 2 Dec 2021 09:53:37 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Greg Kroah-Hartman Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH 1/4] HID: sony: fix error path in probe Date: Thu, 2 Dec 2021 10:53:31 +0100 Message-Id: <20211202095334.14399-2-benjamin.tissoires@redhat.com> In-Reply-To: <20211202095334.14399-1-benjamin.tissoires@redhat.com> References: <20211202095334.14399-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org When the setup of the GHL fails, we are not calling hid_hw_stop(). This leads to the hidraw node not being released, meaning a crash whenever somebody attempts to open the file. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-sony.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index c186af552129..60ec2b29d54d 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -3037,19 +3037,23 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) */ if (!(hdev->claimed & HID_CLAIMED_INPUT)) { hid_err(hdev, "failed to claim input\n"); - hid_hw_stop(hdev); - return -ENODEV; + ret = -ENODEV; + goto err; } if (sc->quirks & (GHL_GUITAR_PS3WIIU | GHL_GUITAR_PS4)) { - if (!hid_is_usb(hdev)) - return -EINVAL; + if (!hid_is_usb(hdev)) { + ret = -EINVAL; + goto err; + } usbdev = to_usb_device(sc->hdev->dev.parent->parent); sc->ghl_urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!sc->ghl_urb) - return -ENOMEM; + if (!sc->ghl_urb) { + ret = -ENOMEM; + goto err; + } if (sc->quirks & GHL_GUITAR_PS3WIIU) ret = ghl_init_urb(sc, usbdev, ghl_ps3wiiu_magic_data, @@ -3059,7 +3063,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) ARRAY_SIZE(ghl_ps4_magic_data)); if (ret) { hid_err(hdev, "error preparing URB\n"); - return ret; + goto err; } timer_setup(&sc->ghl_poke_timer, ghl_magic_poke, 0); @@ -3068,6 +3072,10 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) } return ret; + +err: + hid_hw_stop(hdev); + return ret; } static void sony_remove(struct hid_device *hdev) From patchwork Thu Dec 2 09:53:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 520853 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66CBEC433EF for ; Thu, 2 Dec 2021 09:54:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356923AbhLBJ56 (ORCPT ); Thu, 2 Dec 2021 04:57:58 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:26684 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345217AbhLBJ5I (ORCPT ); Thu, 2 Dec 2021 04:57:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638438825; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XgxgjjV5OKt/bk0s3/TNw9YkhhVjmIMnypyvKB59OzE=; b=D1cUTcviyDo/BIalDADDstacFD7YHdJb1QeyYDKksyUvwIHgyhFIGc//1tlFS3gH0X+h4b +ezG6Nl8evqJa8qJ9hcuwcyb41PG8G+nkmfMKSrsVQYTr+7CAtjBv38pzXvtI5iqmBcAdr 11JMdND/E//832jtgbztNC6TiyVpnpg= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-434-L_RGBmWUMUqZgMsQ12oZIA-1; Thu, 02 Dec 2021 04:53:42 -0500 X-MC-Unique: L_RGBmWUMUqZgMsQ12oZIA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5B4A34237A; Thu, 2 Dec 2021 09:53:41 +0000 (UTC) Received: from xps-13.redhat.com (unknown [10.39.195.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id DFC1C19C46; Thu, 2 Dec 2021 09:53:39 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Greg Kroah-Hartman Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH 2/4] HID: bigbenff: prevent null pointer dereference Date: Thu, 2 Dec 2021 10:53:32 +0100 Message-Id: <20211202095334.14399-3-benjamin.tissoires@redhat.com> In-Reply-To: <20211202095334.14399-1-benjamin.tissoires@redhat.com> References: <20211202095334.14399-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org When emulating the device through uhid, there is a chance we don't have output reports and so report_field is null. Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-bigbenff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-bigbenff.c b/drivers/hid/hid-bigbenff.c index db6da21ade06..74ad8bf98bfd 100644 --- a/drivers/hid/hid-bigbenff.c +++ b/drivers/hid/hid-bigbenff.c @@ -191,7 +191,7 @@ static void bigben_worker(struct work_struct *work) struct bigben_device, worker); struct hid_field *report_field = bigben->report->field[0]; - if (bigben->removed) + if (bigben->removed || !report_field) return; if (bigben->work_led) { From patchwork Thu Dec 2 09:53:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 519964 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70F03C433F5 for ; Thu, 2 Dec 2021 09:54:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357018AbhLBJ6J (ORCPT ); Thu, 2 Dec 2021 04:58:09 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:59147 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356795AbhLBJ5I (ORCPT ); Thu, 2 Dec 2021 04:57:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1638438826; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+6L8O/LZ085WYDY0envLI3JxUJvIUNSDN4ovcLm3NuY=; b=GnOMDF3o72KvZhNtGiUzaksCuk8IVpXNX4WRRnJmXPlNA0Oobf1OopFnP6d3mLGACuFtJr L5xFpFk9Id3EtQ4nd28DK3Fe1KAWlE2QOOu8ThxSUJBPsc+eV8xtET1qj54nozGZRPj6Yd CN2U1bxlwv+Tmsr9lKL4ZCok04ntKTk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-313-xjWD61GZOra5Z1FV3R4uyg-1; Thu, 02 Dec 2021 04:53:44 -0500 X-MC-Unique: xjWD61GZOra5Z1FV3R4uyg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4DD5D10151E1; Thu, 2 Dec 2021 09:53:43 +0000 (UTC) Received: from xps-13.redhat.com (unknown [10.39.195.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id BB4A019724; Thu, 2 Dec 2021 09:53:41 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Greg Kroah-Hartman Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH 3/4] HID: add suspend/resume helpers Date: Thu, 2 Dec 2021 10:53:33 +0100 Message-Id: <20211202095334.14399-4-benjamin.tissoires@redhat.com> In-Reply-To: <20211202095334.14399-1-benjamin.tissoires@redhat.com> References: <20211202095334.14399-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org There is a lot of duplication of code in the HID low level drivers. Better have everything in one place so we can eventually extend it in a generic way. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-core.c | 29 ++++++++++++++++++++++ drivers/hid/i2c-hid/i2c-hid-core.c | 15 +++-------- drivers/hid/surface-hid/surface_hid_core.c | 25 ++++--------------- drivers/hid/usbhid/hid-core.c | 19 ++++++-------- include/linux/hid.h | 10 ++++++++ 5 files changed, 56 insertions(+), 42 deletions(-) diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index dbed2524fd47..5402329d6eca 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -2126,6 +2126,35 @@ void hid_hw_close(struct hid_device *hdev) } EXPORT_SYMBOL_GPL(hid_hw_close); +#ifdef CONFIG_PM +int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) +{ + if (hdev->driver && hdev->driver->suspend) + return hdev->driver->suspend(hdev, state); + + return 0; +} +EXPORT_SYMBOL_GPL(hid_driver_suspend); + +int hid_driver_reset_resume(struct hid_device *hdev) +{ + if (hdev->driver && hdev->driver->reset_resume) + return hdev->driver->reset_resume(hdev); + + return 0; +} +EXPORT_SYMBOL_GPL(hid_driver_reset_resume); + +int hid_driver_resume(struct hid_device *hdev) +{ + if (hdev->driver && hdev->driver->resume) + return hdev->driver->resume(hdev); + + return 0; +} +EXPORT_SYMBOL_GPL(hid_driver_resume); +#endif /* CONFIG_PM */ + struct hid_dynid { struct list_head list; struct hid_device_id id; diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index 68d9a089e3e8..656004919562 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -1066,11 +1066,9 @@ static int i2c_hid_core_suspend(struct device *dev) int ret; int wake_status; - if (hid->driver && hid->driver->suspend) { - ret = hid->driver->suspend(hid, PMSG_SUSPEND); - if (ret < 0) - return ret; - } + ret = hid_driver_suspend(hid, PMSG_SUSPEND); + if (ret < 0) + return ret; /* Save some power */ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP); @@ -1128,12 +1126,7 @@ static int i2c_hid_core_resume(struct device *dev) if (ret) return ret; - if (hid->driver && hid->driver->reset_resume) { - ret = hid->driver->reset_resume(hid); - return ret; - } - - return 0; + return hid_driver_reset_resume(hid); } #endif diff --git a/drivers/hid/surface-hid/surface_hid_core.c b/drivers/hid/surface-hid/surface_hid_core.c index 5571e74abe91..e46330b2e561 100644 --- a/drivers/hid/surface-hid/surface_hid_core.c +++ b/drivers/hid/surface-hid/surface_hid_core.c @@ -204,50 +204,35 @@ static int surface_hid_suspend(struct device *dev) { struct surface_hid_device *d = dev_get_drvdata(dev); - if (d->hid->driver && d->hid->driver->suspend) - return d->hid->driver->suspend(d->hid, PMSG_SUSPEND); - - return 0; + return hid_driver_suspend(d->hid, PMSG_SUSPEND); } static int surface_hid_resume(struct device *dev) { struct surface_hid_device *d = dev_get_drvdata(dev); - if (d->hid->driver && d->hid->driver->resume) - return d->hid->driver->resume(d->hid); - - return 0; + return hid_driver_resume(d->hid); } static int surface_hid_freeze(struct device *dev) { struct surface_hid_device *d = dev_get_drvdata(dev); - if (d->hid->driver && d->hid->driver->suspend) - return d->hid->driver->suspend(d->hid, PMSG_FREEZE); - - return 0; + return hid_driver_suspend(d->hid, PMSG_FREEZE); } static int surface_hid_poweroff(struct device *dev) { struct surface_hid_device *d = dev_get_drvdata(dev); - if (d->hid->driver && d->hid->driver->suspend) - return d->hid->driver->suspend(d->hid, PMSG_HIBERNATE); - - return 0; + return hid_driver_suspend(d->hid, PMSG_HIBERNATE); } static int surface_hid_restore(struct device *dev) { struct surface_hid_device *d = dev_get_drvdata(dev); - if (d->hid->driver && d->hid->driver->reset_resume) - return d->hid->driver->reset_resume(d->hid); - - return 0; + return hid_driver_reset_resume(d->hid); } const struct dev_pm_ops surface_hid_pm_ops = { diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 2dcaf31eb9cd..54752c85604b 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -1563,8 +1563,8 @@ static int hid_resume_common(struct hid_device *hid, bool driver_suspended) int status = 0; hid_restart_io(hid); - if (driver_suspended && hid->driver && hid->driver->resume) - status = hid->driver->resume(hid); + if (driver_suspended) + status = hid_driver_resume(hid); return status; } @@ -1588,11 +1588,9 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message) { set_bit(HID_SUSPENDED, &usbhid->iofl); spin_unlock_irq(&usbhid->lock); - if (hid->driver && hid->driver->suspend) { - status = hid->driver->suspend(hid, message); - if (status < 0) - goto failed; - } + status = hid_driver_suspend(hid, message); + if (status < 0) + goto failed; driver_suspended = true; } else { usbhid_mark_busy(usbhid); @@ -1602,8 +1600,7 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message) } else { /* TODO: resume() might need to handle suspend failure */ - if (hid->driver && hid->driver->suspend) - status = hid->driver->suspend(hid, message); + status = hid_driver_suspend(hid, message); driver_suspended = true; spin_lock_irq(&usbhid->lock); set_bit(HID_SUSPENDED, &usbhid->iofl); @@ -1644,8 +1641,8 @@ static int hid_reset_resume(struct usb_interface *intf) int status; status = hid_post_reset(intf); - if (status >= 0 && hid->driver && hid->driver->reset_resume) { - int ret = hid->driver->reset_resume(hid); + if (status >= 0) { + int ret = hid_driver_reset_resume(hid); if (ret < 0) status = ret; } diff --git a/include/linux/hid.h b/include/linux/hid.h index f453be385bd4..cce1b01b3055 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -928,6 +928,16 @@ s32 hid_snto32(__u32 value, unsigned n); __u32 hid_field_extract(const struct hid_device *hid, __u8 *report, unsigned offset, unsigned n); +#ifdef CONFIG_PM +int hid_driver_suspend(struct hid_device *hdev, pm_message_t state); +int hid_driver_reset_resume(struct hid_device *hdev); +int hid_driver_resume(struct hid_device *hdev); +#else +static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; } +static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; } +static inline int hid_driver_resume(struct hid_device *hdev) { return 0; } +#endif + /** * hid_device_io_start - enable HID input during probe, remove * From patchwork Thu Dec 2 09:53:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 520852 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 263B6C433EF for ; Thu, 2 Dec 2021 09:55:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346053AbhLBJ6d (ORCPT ); Thu, 2 Dec 2021 04:58:33 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:43725 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356786AbhLBJ5K (ORCPT ); Thu, 2 Dec 2021 04:57:10 -0500 DKIM-Signature: v=1; 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Thu, 2 Dec 2021 09:53:45 +0000 (UTC) Received: from xps-13.redhat.com (unknown [10.39.195.108]) by smtp.corp.redhat.com (Postfix) with ESMTP id AC64C19C46; Thu, 2 Dec 2021 09:53:43 +0000 (UTC) From: Benjamin Tissoires To: Jiri Kosina , Greg Kroah-Hartman Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Benjamin Tissoires Subject: [PATCH 4/4] HID: do not inline some hid_hw_ functions Date: Thu, 2 Dec 2021 10:53:34 +0100 Message-Id: <20211202095334.14399-5-benjamin.tissoires@redhat.com> In-Reply-To: <20211202095334.14399-1-benjamin.tissoires@redhat.com> References: <20211202095334.14399-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org We don't gain much by having them as inline, and it actually prevents us to attach a probe to those helpers. Signed-off-by: Benjamin Tissoires --- drivers/hid/hid-core.c | 64 +++++++++++++++++++++++++++++++++++++++ include/linux/hid.h | 68 ++++-------------------------------------- 2 files changed, 70 insertions(+), 62 deletions(-) diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 5402329d6eca..f1aed5bbd000 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -2126,6 +2126,70 @@ void hid_hw_close(struct hid_device *hdev) } EXPORT_SYMBOL_GPL(hid_hw_close); +/** + * hid_hw_request - send report request to device + * + * @hdev: hid device + * @report: report to send + * @reqtype: hid request type + */ +void hid_hw_request(struct hid_device *hdev, + struct hid_report *report, int reqtype) +{ + if (hdev->ll_driver->request) + return hdev->ll_driver->request(hdev, report, reqtype); + + __hid_request(hdev, report, reqtype); +} +EXPORT_SYMBOL_GPL(hid_hw_request); + +/** + * hid_hw_raw_request - send report request to device + * + * @hdev: hid device + * @reportnum: report ID + * @buf: in/out data to transfer + * @len: length of buf + * @rtype: HID report type + * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT + * + * Return: count of data transferred, negative if error + * + * Same behavior as hid_hw_request, but with raw buffers instead. + */ +int hid_hw_raw_request(struct hid_device *hdev, + unsigned char reportnum, __u8 *buf, + size_t len, unsigned char rtype, int reqtype) +{ + if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) + return -EINVAL; + + return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, + rtype, reqtype); +} +EXPORT_SYMBOL_GPL(hid_hw_raw_request); + +/** + * hid_hw_output_report - send output report to device + * + * @hdev: hid device + * @buf: raw data to transfer + * @len: length of buf + * + * Return: count of data transferred, negative if error + */ +int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len) +{ + if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) + return -EINVAL; + + if (hdev->ll_driver->output_report) + return hdev->ll_driver->output_report(hdev, buf, len); + + return -ENOSYS; +} +EXPORT_SYMBOL_GPL(hid_hw_output_report); + #ifdef CONFIG_PM int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { diff --git a/include/linux/hid.h b/include/linux/hid.h index cce1b01b3055..313fa4a2554f 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -1071,6 +1071,12 @@ int __must_check hid_hw_start(struct hid_device *hdev, void hid_hw_stop(struct hid_device *hdev); int __must_check hid_hw_open(struct hid_device *hdev); void hid_hw_close(struct hid_device *hdev); +void hid_hw_request(struct hid_device *hdev, + struct hid_report *report, int reqtype); +int hid_hw_raw_request(struct hid_device *hdev, + unsigned char reportnum, __u8 *buf, + size_t len, unsigned char rtype, int reqtype); +int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len); /** * hid_hw_power - requests underlying HW to go into given power mode @@ -1088,68 +1094,6 @@ static inline int hid_hw_power(struct hid_device *hdev, int level) } -/** - * hid_hw_request - send report request to device - * - * @hdev: hid device - * @report: report to send - * @reqtype: hid request type - */ -static inline void hid_hw_request(struct hid_device *hdev, - struct hid_report *report, int reqtype) -{ - if (hdev->ll_driver->request) - return hdev->ll_driver->request(hdev, report, reqtype); - - __hid_request(hdev, report, reqtype); -} - -/** - * hid_hw_raw_request - send report request to device - * - * @hdev: hid device - * @reportnum: report ID - * @buf: in/out data to transfer - * @len: length of buf - * @rtype: HID report type - * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT - * - * Return: count of data transferred, negative if error - * - * Same behavior as hid_hw_request, but with raw buffers instead. - */ -static inline int hid_hw_raw_request(struct hid_device *hdev, - unsigned char reportnum, __u8 *buf, - size_t len, unsigned char rtype, int reqtype) -{ - if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) - return -EINVAL; - - return hdev->ll_driver->raw_request(hdev, reportnum, buf, len, - rtype, reqtype); -} - -/** - * hid_hw_output_report - send output report to device - * - * @hdev: hid device - * @buf: raw data to transfer - * @len: length of buf - * - * Return: count of data transferred, negative if error - */ -static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, - size_t len) -{ - if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf) - return -EINVAL; - - if (hdev->ll_driver->output_report) - return hdev->ll_driver->output_report(hdev, buf, len); - - return -ENOSYS; -} - /** * hid_hw_idle - send idle request to device *