From: Pawel Laszczak <pawell@cadence.com>
To: Peter Chen <peter.chen@nxp.com>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"balbi@kernel.org" <balbi@kernel.org>,
"colin.king@canonical.com" <colin.king@canonical.com>,
"rogerq@ti.com" <rogerq@ti.com>,
Jayshri Dajiram Pawar <jpawar@cadence.com>,
Rahul Kumar <kurahul@cadence.com>,
Sanket Parmar <sparmar@cadence.com>,
"nsekhar@ti.com" <nsekhar@ti.com>,
"heikki.krogerus@linux.intel.com"
<heikki.krogerus@linux.intel.com>,
"chunfeng.yun@mediatek.com" <chunfeng.yun@mediatek.com>,
"yanaijie@huawei.com" <yanaijie@huawei.com>
Subject: RE: [PATCH 5/8] usb: cdns3: Changed type of gadget_dev in cdns structure
Date: Mon, 5 Oct 2020 06:15:33 +0000 [thread overview]
Message-ID: <DM6PR07MB5529DD806756B5EB36A2B6B4DD0C0@DM6PR07MB5529.namprd07.prod.outlook.com> (raw)
In-Reply-To: <DM6PR07MB55293E7DAC48DBB3000AE6EEDD300@DM6PR07MB5529.namprd07.prod.outlook.com>
>>
>>On 20-09-28 14:27:38, Pawel Laszczak wrote:
>>> Patch changes the type for gadget_dev pointer in cdns structure from
>>> pointer to cdns3_device structure to void pointer.
>>> This filed is in reusable code and after this change it will be used to
>>> point to both cdns3_device or cdnsp_device objects.
>>>
>>> Signed-off-by: Pawel Laszczak <pawell@cadence.com>
>>> ---
>>> drivers/usb/cdns3/core.h | 4 ++--
>>> drivers/usb/cdns3/gadget.c | 6 ++++++
>>> 2 files changed, 8 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h
>>> index 0c6e14683b36..267923904a37 100644
>>> --- a/drivers/usb/cdns3/core.h
>>> +++ b/drivers/usb/cdns3/core.h
>>> @@ -55,7 +55,7 @@ struct cdns_role_driver {
>>> * @roles: array of supported roles for this controller
>>> * @role: current role
>>> * @host_dev: the child host device pointer for cdns core
>>> - * @gadget_dev: the child gadget device pointer for cdns3 core
>>> + * @gadget_dev: the child gadget device pointer
>>> * @usb2_phy: pointer to USB2 PHY
>>> * @usb3_phy: pointer to USB3 PHY
>>> * @mutex: the mutex for concurrent code at driver
>>> @@ -87,7 +87,7 @@ struct cdns {
>>> struct cdns_role_driver *roles[USB_ROLE_DEVICE + 1];
>>> enum usb_role role;
>>> struct platform_device *host_dev;
>>> - struct cdns3_device *gadget_dev;
>>> + void *gadget_dev;
>>> struct phy *usb2_phy;
>>> struct phy *usb3_phy;
>>> /* mutext used in workqueue*/
>>> diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
>>> index 26f68182e65e..f9cbc84bbfb8 100644
>>> --- a/drivers/usb/cdns3/gadget.c
>>> +++ b/drivers/usb/cdns3/gadget.c
>>> @@ -3177,7 +3177,9 @@ static int __cdns3_gadget_init(struct cdns *cdns)
>>> static int cdns3_gadget_suspend(struct cdns *cdns, bool do_wakeup)
>>> {
>>> struct cdns3_device *priv_dev = cdns->gadget_dev;
>>> + unsigned long flags;
>>>
>>> + spin_lock_irqsave(&priv_dev->lock, flags);
>>
>>unrelated changes?
>
>It's needed but this patch has missing removing this line from:
>cdns3_suspend/cdns3_resume from core.c file.
>It exists in patch 2 (usb: cdns3: Split core.c into cdns3-plat and core.c file).
>I will correct this patch.
>
>I had to move this spin_lock because in core.c we don't know the
>cdns->gadget_dev type (void * gadget_dev).
>
You have right, after merging the latest patches from Felipe
repository this changes are not need.
Regards,
Pawel,
>
>>
>>> cdns3_disconnect_gadget(priv_dev);
>>>
>>> priv_dev->gadget.speed = USB_SPEED_UNKNOWN;
>>> @@ -3186,6 +3188,7 @@ static int cdns3_gadget_suspend(struct cdns *cdns, bool do_wakeup)
>>>
>>> /* disable interrupt for device */
>>> writel(0, &priv_dev->regs->usb_ien);
>>> + spin_unlock_irqrestore(&priv_dev->lock, flags);
>>>
>>> return 0;
>>> }
>>> @@ -3193,11 +3196,14 @@ static int cdns3_gadget_suspend(struct cdns *cdns, bool do_wakeup)
>>> static int cdns3_gadget_resume(struct cdns *cdns, bool hibernated)
>>> {
>>> struct cdns3_device *priv_dev = cdns->gadget_dev;
>>> + unsigned long flags;
>>>
>>> if (!priv_dev->gadget_driver)
>>> return 0;
>>>
>>> + spin_lock_irqsave(&priv_dev->lock, flags);
>>
>>ditto
>>
>>> cdns3_gadget_config(priv_dev);
>>> + spin_unlock_irqrestore(&priv_dev->lock, flags);
>>>
>>> return 0;
>>> }
>>> --
>>> 2.17.1
>>>
>>
>>--
>>
>>Thanks,
>>Peter Chen
next prev parent reply other threads:[~2020-10-05 6:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-28 12:27 [PATCH 0/8] Introduced new Cadence USBSSP DRD Driver Pawel Laszczak
2020-09-28 12:27 ` [PATCH 1/8] usb: cdns3: Add support for DRD CDNSP Pawel Laszczak
2020-09-28 12:27 ` [PATCH 2/8] usb: cdns3: Split core.c into cdns3-plat and core.c file Pawel Laszczak
2020-09-29 1:46 ` Chunfeng Yun
2020-09-30 5:22 ` Pawel Laszczak
2020-09-30 7:38 ` Pawel Laszczak
2020-09-29 3:37 ` Peter Chen
2020-09-30 9:35 ` Pawel Laszczak
2020-09-28 12:27 ` [PATCH 3/8] usb: cdns3: Moves reusable code to separate module Pawel Laszczak
2020-09-28 12:27 ` [PATCH 4/8] usb: cdns3: Refactoring names in reusable code Pawel Laszczak
2020-09-28 12:27 ` [PATCH 5/8] usb: cdns3: Changed type of gadget_dev in cdns structure Pawel Laszczak
2020-09-29 4:36 ` Peter Chen
2020-10-01 4:40 ` Pawel Laszczak
2020-10-05 6:15 ` Pawel Laszczak [this message]
2020-09-28 12:27 ` [PATCH 6/8] usb: cdnsp: Device side header file for CDNSP driver Pawel Laszczak
2020-09-29 2:26 ` Chunfeng Yun
2020-09-30 8:55 ` Pawel Laszczak
2020-09-29 4:37 ` Peter Chen
2020-09-30 9:22 ` Pawel Laszczak
2020-09-28 12:27 ` [PATCH 7/8] usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver Pawel Laszczak
2020-09-29 4:27 ` Chunfeng Yun
2020-09-30 11:58 ` Pawel Laszczak
2020-09-29 4:46 ` Peter Chen
2020-09-30 13:01 ` Pawel Laszczak
2020-09-28 12:27 ` [PATCH 8/8] usb: cdnsp: Add tracepoints for CDNSP driver Pawel Laszczak
2020-09-29 3:24 ` [PATCH 0/8] Introduced new Cadence USBSSP DRD Driver Peter Chen
2020-09-30 7:43 ` Pawel Laszczak
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