linux-kernel - Re: [PATCH] usb: musb: Silence error about blacklisting hubs if !CONFIG

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Date:   Mon, 01 Apr 2019 19:51:59 +0200
From:   Paul Cercueil <paul@...pouillou.net>
To:     Bin Liu <b-liu@...com>
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: musb: Silence error about blacklisting hubs if
 !CONFIG_USB



Le lun. 1 avril 2019 à 17:43, Bin Liu <b-liu@...com> a écrit :
> On Tue, Mar 19, 2019 at 02:51:46PM +0100, Paul Cercueil wrote:
>>  Some drivers, like jz4740-musb, don't depend on CONFIG_USB.
> 
> CONFIG_USB_OTG_BLACKLIST_HUB is about hub, so should it depend on
> CONFIG_USB instead in drivers/usb/core/Kconfig?

It's already the case, indirectly - it depends on CONFIG_USB_OTG,
which only exists if CONFIG_USB is set.

>> 
>>  Signed-off-by: Paul Cercueil <paul@...pouillou.net>
>>  ---
>>   drivers/usb/musb/musb_core.c | 9 +++++----
>>   1 file changed, 5 insertions(+), 4 deletions(-)
>> 
>>  diff --git a/drivers/usb/musb/musb_core.c 
>> b/drivers/usb/musb/musb_core.c
>>  index b7d56272f9d1..9f5a4819a744 100644
>>  --- a/drivers/usb/musb/musb_core.c
>>  +++ b/drivers/usb/musb/musb_core.c
>>  @@ -1497,10 +1497,11 @@ static int musb_core_init(u16 musb_type, 
>> struct musb *musb)
>>   	} else {
>>   		musb->is_multipoint = 0;
>>   		type = "";
>>  -#ifndef	CONFIG_USB_OTG_BLACKLIST_HUB
>>  -		pr_err("%s: kernel must blacklist external hubs\n",
>>  -		       musb_driver_name);
>>  -#endif
>>  +		if (IS_ENABLED(CONFIG_USB) &&
>>  +		    !IS_ENABLED(CONFIG_USB_OTG_BLACKLIST_HUB)) {
>>  +			pr_err("%s: kernel must blacklist external hubs\n",
>>  +			       musb_driver_name);
>>  +		}
>>   	}
>> 
>>   	/* log release info */
> 
> Regards,
> -Bin.