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The driver core is changing to pass some pointers as const, so move to_vio_dev() to use container_of_const() to handle this change. to_vio_dev() now properly keeps the const-ness of the pointer passed into it, while as before it could be lost. Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: Kees Cook <keescook@chromium.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-9-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>