Re: [PATCH] serial: of-serial: zero-out struct of_serial_info

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Nov 04, 2014 at 10:23:49AM -0800, Florian Fainelli wrote:
> On 10/30/2014 02:55 PM, Arnd Bergmann wrote:
> > On Thursday 30 October 2014 14:18:33 Florian Fainelli wrote:
> >> of_platform_serial_probe() invokes of_platform_serial_setup() with a
> >> kmalloc'd struct of_serial_info cookie, which is not much of a problem
> >> for most of the struct of_serial_info fields we access but info->clk.
> >>
> >> On platforms which do not provide a clock phandle for their UART nodes
> >> but do provide a 'clock-frequency' property, we basically leave the
> >> info->clk variable uninitialized, and this craps out during
> >> suspend/resume with oopses, crashes or warnings in the clock code.
> >>
> >> Fix this by using kzalloc() which also zeroes-out the structure and
> >> provides an initialized info->clk member set to NULL.
> >>
> >> Fixes: 2dea53bf57783 ("serial: of-serial: add PM suspend/resume support")
> >> Fixes: e34b9c94b6e8d ("[POWERPC] of_serial: add port type checking")
> >> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> >>
> > 
> > I thought I'd acked this patch before, maybe someone else sent the same
> > one. This is definitely required, so
> > 
> > Acked-by: Arnd Bergmann <arnd@arndb.de>
> > 
> 
> Thanks, so who's taking that patch? Let me know if I need to resubmit
> targeting a specific tree.

Someone else sent this before you did, and I took that version instead,
sorry.

greg k-h