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Commit 6f553912 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
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powerpc/sysdev/simple_gpio: Fix oops in gpio save_regs function



of_mm_gpiochip_add_data() generates an oops for NULL pointer dereference.

of_mm_gpiochip_add_data() calls mm_gc->save_regs() before
setting the data, therefore ->save_regs() cannot use gpiochip_get_data()

Fixes: 937daafc ("powerpc: simple-gpio: use gpiochip data pointer")
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 99acc9be
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