linux-kernel - Re: [patch 2.6.19-rc6] platform_driver

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Message-ID: <d120d5000611170632v5ab837a6u6df9fe054988e15@mail.gmail.com>
Date:	Fri, 17 Nov 2006 09:32:15 -0500
From:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
To:	"David Brownell" <david-b@...bell.net>
Cc:	"Greg KH" <greg@...ah.com>,
	"Linux Kernel list" <linux-kernel@...r.kernel.org>
Subject: Re: [patch 2.6.19-rc6] platform_driver_probe(), can save codespace

On 11/17/06, David Brownell <david-b@...bell.net> wrote:
> +
> +       /* Fixup that section violation, being paranoid about code scanning
> +        * the list of drivers in order to probe new devices.  Check to see
> +        * if the probe was successful, and make sure any forced probes of
> +        * new devices fail.
> +        */
> +       spin_lock(&platform_bus_type.klist_drivers.k_lock);
> +       drv->probe = NULL;
> +       if (code == 0 && list_empty(&drv->driver.klist_devices.k_list))
> +               retval = -ENODEV;
> +       drv->driver.probe = platform_drv_probe_fail;
> +       spin_unlock(&platform_bus_type.klist_drivers.k_lock);

I think this code should not be executed if driver is compiled as a
module because __init sections will stay anyway. Also, why don't you
also remove "bind" attribute if driver is built-in. That should save a
bit of dynamic memory.

-- 
Dmitry
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