From: Roger Quadros <rogerq@ti.com>
To: Pawel Laszczak <pawell@cadence.com>,
Felipe Balbi <felipe.balbi@linux.intel.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"hdegoede@redhat.com" <hdegoede@redhat.com>,
"heikki.krogerus@linux.intel.com"
<heikki.krogerus@linux.intel.com>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"jbergsagel@ti.com" <jbergsagel@ti.com>,
"nsekhar@ti.com" <nsekhar@ti.com>, "nm@ti.com" <nm@ti.com>,
Suresh Punnoose <sureshp@cadence.com>,
"peter.chen@nxp.com" <peter.chen@nxp.com>,
Jayshri Dajiram Pawar <jpawar@cadence.com>,
Rahul Kumar <kurahul@cadence.com>
Subject: Re: [PATCH v9 2/6] usb:gadget Separated decoding functions from dwc3 driver.
Date: Wed, 7 Aug 2019 13:17:39 +0300 [thread overview]
Message-ID: <b66216dd-6fcf-2900-e67b-42fdb81af78a@ti.com> (raw)
In-Reply-To: <BYAPR07MB4709964C1D0AA2A851BF2F55DDF50@BYAPR07MB4709.namprd07.prod.outlook.com>
On 05/07/2019 14:44, Pawel Laszczak wrote:
>
>> EXTERNAL MAIL
>>
>>
>>
>> Hi,
>>
>> Pawel Laszczak <pawell@cadence.com> writes:
>>> diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
>>> index da82606be605..d388a3a5ab7e 100644
>>> --- a/include/linux/usb/ch9.h
>>> +++ b/include/linux/usb/ch9.h
>>> @@ -70,4 +70,29 @@ extern enum usb_device_speed usb_get_maximum_speed(struct device *dev);
>>> */
>>> extern const char *usb_state_string(enum usb_device_state state);
>>>
>>> +/**
>>> + * usb_decode_ctrl - Returns human readable representation of control request.
>>> + * @str: buffer to return a human-readable representation of control request.
>>> + * This buffer should have about 200 bytes.
>>> + * @size: size of str buffer.
>>> + * @bRequestType: matches the USB bmRequestType field
>>> + * @bRequest: matches the USB bRequest field
>>> + * @wValue: matches the USB wValue field (CPU byte order)
>>> + * @wIndex: matches the USB wIndex field (CPU byte order)
>>> + * @wLength: matches the USB wLength field (CPU byte order)
>>> + *
>>> + * Function returns decoded, formatted and human-readable description of
>>> + * control request packet.
>>> + *
>>> + * The usage scenario for this is for tracepoints, so function as a return
>>> + * use the same value as in parameters. This approach allows to use this
>>> + * function in TP_printk
>>> + *
>>> + * Important: wValue, wIndex, wLength parameters before invoking this function
>>> + * should be processed by le16_to_cpu macro.
>>> + */
>>> +extern const char *usb_decode_ctrl(char *str, size_t size, __u8 bRequestType,
>>> + __u8 bRequest, __u16 wValue, __u16 wIndex,
>>> + __u16 wLength);
>>> +
>>
>> where's the stub when !TRACING?
>
> Right, I will add
> #ifdef CONFIG_TRACING
> .....
> #endif
Can usb_decode_ctrl() be used even when CONFIG_TRACING is not set?
If yes then above #ifdefe is not sufficient.
You might need to do something like
#if defined(CONFIG_TRACING)
extern const char *usb_decode_ctrl(..)
#else
static inline const char *usb_decode_ctrl(..) {
return NULL;
}
#endif
--
cheers,
-roger
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
next prev parent reply other threads:[~2019-08-07 10:17 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-05 10:57 [PATCH v9 0/6] Introduced new Cadence USBSS DRD Driver Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 1/6] dt-bindings: add binding for USBSS-DRD controller Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 2/6] usb:gadget Separated decoding functions from dwc3 driver Pawel Laszczak
2019-07-05 11:27 ` Greg KH
2019-07-05 11:39 ` Pawel Laszczak
2019-07-05 11:49 ` Greg KH
2019-07-05 12:03 ` Pawel Laszczak
2019-07-05 11:39 ` Felipe Balbi
2019-07-05 11:44 ` Pawel Laszczak
2019-08-07 10:17 ` Roger Quadros [this message]
2019-08-07 10:22 ` Felipe Balbi
2019-08-08 3:07 ` Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 3/6] usb:gadget Patch simplify usb_decode_set_clear_feature function Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 4/6] usb:gadget Simplify usb_decode_get_set_descriptor function Pawel Laszczak
2019-07-05 10:57 ` [PATCH v9 5/6] usb:cdns3 Add Cadence USB3 DRD Driver Pawel Laszczak
2019-07-05 11:55 ` Felipe Balbi
2019-07-07 17:56 ` Pawel Laszczak
2019-07-08 6:29 ` Felipe Balbi
2019-07-08 10:59 ` Pawel Laszczak
2019-07-08 11:15 ` Felipe Balbi
2019-07-08 11:45 ` Pawel Laszczak
2019-07-08 11:59 ` Felipe Balbi
2019-07-08 12:39 ` Pawel Laszczak
2019-07-09 4:23 ` Pawel Laszczak
2019-07-09 6:36 ` Felipe Balbi
2019-07-09 7:07 ` Pawel Laszczak
2019-07-09 7:22 ` Felipe Balbi
2019-07-09 7:29 ` Pawel Laszczak
2019-07-10 8:25 ` Pawel Laszczak
2019-07-08 7:11 ` Felipe Balbi
2019-07-15 11:00 ` Pawel Laszczak
2019-08-07 10:34 ` Felipe Balbi
2019-08-10 20:39 ` Pawel Laszczak
2019-08-12 1:55 ` Peter Chen
2019-08-12 4:43 ` Pawel Laszczak
2019-08-12 5:24 ` Felipe Balbi
2019-08-12 7:13 ` Pawel Laszczak
2019-08-12 8:19 ` Felipe Balbi
2019-08-12 9:13 ` Pawel Laszczak
2019-08-12 9:45 ` Felipe Balbi
2019-08-12 10:26 ` Pawel Laszczak
2019-08-12 10:34 ` Felipe Balbi
2019-08-12 14:20 ` Alan Stern
2019-07-05 10:57 ` [PATCH v9 6/6] usb:cdns3 Fix for stuck packets in on-chip OUT buffer Pawel Laszczak
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