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if pdata is a NULL pointer we could cause a kernel oops when probing the driver. Make sure to cope with systems which won't pass pdata to the driver. Tested-by: Paul Zimmerman <paulz@synopsys.com> Reported-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>