net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset
stable inclusion from stable-v5.10.192 commit 773075d38a2f0b77d94bfa024a5741d3516c46aa category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I933RF Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=773075d38a2f0b77d94bfa024a5741d3516c46aa -------------------------------- [ Upstream commit 23d775f1 ] If the switch is reset during active EEPROM transactions, as in just after an SoC reset after power up, the I2C bus transaction may be cut short leaving the EEPROM internal I2C state machine in the wrong state. When the switch is reset again, the bad state machine state may result in data being read from the wrong memory location causing the switch to enter unexpected mode rendering it inoperational. Fixes: a3dcb3e7 ("net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset") Signed-off-by:Alfred Lee <l00g33k@gmail.com> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20230815001323.24739-1-l00g33k@gmail.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
sanglipeng <sanglipeng1@jd.com>
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