linux-kernel - Re: [PATCH -next] usb/usbip: fix wrong data added to platform device

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Message-ID: <ZSmgmw+//ymBHtfN@smile.fi.intel.com>
Date:   Fri, 13 Oct 2023 22:55:07 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Hongren Zheng <i@...ithal.me>
Cc:     Shuah Khan <shuah@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Valentina Manea <valentina.manea.m@...il.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        sfr@...b.auug.org.au
Subject: Re: [PATCH -next] usb/usbip: fix wrong data added to platform device

On Fri, Oct 13, 2023 at 06:52:09PM +0800, Hongren Zheng wrote:
> .data of platform_device_info will be copied into .platform_data of
> struct device via platform_device_add_data.
> 
> However, vhcis[i] contains a spinlock, is dynamically allocated and
> used by other code, so it is not meant to be copied. The workaround
> was to use void *vhci as an agent, but it was removed in the commit
> suggested below.
> 
> This patch adds back the workaround and changes the way of using
> platform_data accordingly.

Thanks for fixing this.

...

> -	struct vhci *vhci = dev_get_platdata(hcd->self.controller);

> -

The blank line here is on purpose.

> +	struct vhci *vhci = *((void **)dev_get_platdata(hcd->self.controller));

-- 
With Best Regards,
Andy Shevchenko