net: fec: limit register access on i.MX6UL
stable inclusion from stable-v5.10.153 commit 97262705c0cb067c0f9bd055edfe115f7f43913c category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I64YCA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=97262705c0cb067c0f9bd055edfe115f7f43913c -------------------------------- [ Upstream commit 0a8b43b1 ] Using 'ethtool -d […]' on an i.MX6UL leads to a kernel crash: Unhandled fault: external abort on non-linefetch (0x1008) at […] due to this SoC has less registers in its FEC implementation compared to other i.MX6 variants. Thus, a run-time decision is required to avoid access to non-existing registers. Fixes: a51d3ab5 ("net: fec: use a more proper compatible string for i.MX6UL type device") Signed-off-by: NJuergen Borleis <jbe@pengutronix.de> Reviewed-by: NAndrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20221024080552.21004-1-jbe@pengutronix.deSigned-off-by: NJakub Kicinski <kuba@kernel.org> Signed-off-by: NSasha Levin <sashal@kernel.org> Signed-off-by: NLipeng Sang <sanglipeng1@jd.com>
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