linux-kernel - Re: [lkp] [ppdev] 138e9d20e6: kernel BUG at drivers/base/driver.c:153!

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Message-ID: <20160214163001.GA19855@sudip-laptop>
Date:	Sun, 14 Feb 2016 22:00:01 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	kernel test robot <ying.huang@...ux.intel.com>
Cc:	lkp@...org, LKML <linux-kernel@...r.kernel.org>,
	Sudip Mukherjee <sudip@...torindia.org>,
	0day robot <fengguang.wu@...el.com>
Subject: Re: [lkp] [ppdev] 138e9d20e6: kernel BUG at
 drivers/base/driver.c:153!

On Sun, Feb 14, 2016 at 02:24:27PM +0800, kernel test robot wrote:
> FYI, we noticed the below changes on
> 
> https://github.com/0day-ci/linux Sudip-Mukherjee/ppdev-space-prohibited-between-function-name-and-parenthesis/20160212-210833
> commit 138e9d20e69c0d682f584ee1ef0151338eef7499 ("ppdev: use new parport device model")

I am not able to reproduce this as I donot have all your scripts/files.
Can you please check if the below patch solves this in your setup.


diff --git a/drivers/parport/share.c b/drivers/parport/share.c
index 3308427..176b2b6 100644
--- a/drivers/parport/share.c
+++ b/drivers/parport/share.c
@@ -273,6 +273,9 @@ int __parport_register_driver(struct parport_driver *drv, struct module *owner,
 		/* using device model */
 		int ret;
 
+		if (!parport_bus_type.p)
+			return -EAGAIN;
+
 		/* initialize common driver fields */
 		drv->driver.name = drv->name;
 		drv->driver.bus = &parport_bus_type;

--
regards
sudip