linux-kernel - Re: [PATCH v7] usb: common: usb-conn-gpio: Set last role to unknown before initial detection

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Message-ID: <551145bb-18f7-45af-b75e-7caccca113bc@quicinc.com>
Date:   Thu, 15 Jun 2023 20:28:13 +0530
From:   Prashanth K <quic_prashk@...cinc.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7] usb: common: usb-conn-gpio: Set last role to unknown
 before initial detection



On 15-06-23 08:06 pm, Greg Kroah-Hartman wrote:
> On Thu, Jun 15, 2023 at 07:52:32PM +0530, Prashanth K wrote:
>>
>> In that case, can I resubmit v1 of this patch again, where I have used a
>> macro in usb-conn-gpio driver ? something like this.
>>
>> @@ -27,6 +27,8 @@
>>   #define USB_CONN_IRQF	\
>>   	(IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT)
>>
>> +#define USB_ROLE_UNKNOWN (USB_ROLE_NONE -1)
> 
> Are you referencing an existing enum here and assuming it is a specific
> value?

I' not assuming UBS_ROLE_NONE to be a specific value, but I want an 
integer (for macro) which is not equal to USB_ROLE_NONE/DEVICE/HOST, 
that's why I'm using (USB_ROLE_NONE - 1), assuming enumerators NONE, 
DEVICE & HOST will be having adjacent integer values. Wouldn't that help?

Thanks,
Prashanth K