Janusz Krzysztofik 136c523734 ARM: OMAP1: ams-delta: Fix possible use of uninitialized field
[ Upstream commit cec83ff124 ]

While playing with initialization order of modem device, it has been
discovered that under some circumstances (early console init, I
believe) its .pm() callback may be called before the
uart_port->private_data pointer is initialized from
plat_serial8250_port->private_data, resulting in NULL pointer
dereference.  Fix it by checking for uninitialized pointer before using
it in modem_pm().

Fixes: aabf31737a ("ARM: OMAP1: ams-delta: update the modem to use regulator API")
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2018-12-17 09:24:30 +01:00
2018-12-17 09:24:28 +01:00
2018-12-17 09:24:29 +01:00
2018-12-13 09:16:23 +01:00

Linux kernel
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