Re: [PATCH] usb: musb: fix pm_runtime mismatch

[Greg KH <greg@kroah.com>]

On Fri, Dec 16, 2011 at 12:42:14AM +0200, Felipe Contreras wrote:
> In musb_init_controller() there's a pm_runtime_put(), but there's no
> pm_runtime_get(), which creates a mismatch that causes the driver to
> sleep when it shouldn't.
> 
> This was introduced in 7acc619, but it wasn't triggered until 18a2689
> was merged to Linus' branch at point 6899608.
> 
> However, it seems most of the time this is used in a way that keeps the
> counter above 0, so nobody noticed. Also, it seems to depend on the
> configuration used.
> 
> I found the problem by loading isp1704_charger before any usb gadgets:
> http://article.gmane.org/gmane.linux.kernel/1226122
> 
> All versions after 2.6.39 are affected.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
> ---
>  drivers/usb/musb/musb_core.c |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)

Will you be including this in your next pull request for me to include
in my tree to go to Linus soon?

thanks,

greg k-h