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

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Message-ID: <20190401183442.GM25852@uda0271908>
Date:   Mon, 1 Apr 2019 13:34:42 -0500
From:   Bin Liu <b-liu@...com>
To:     Paul Cercueil <paul@...pouillou.net>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: musb: Silence error about blacklisting hubs if
 !CONFIG_USB

On Mon, Apr 01, 2019 at 07:51:59PM +0200, Paul Cercueil wrote:
> 
> 
> 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.

Never mind, my bad, I misunderstood the logic.

> >>
> >> 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 */

The patch is applied.

Thanks,
-Bin.