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i2c: designware: call i2c_dw_read_clear_intrbits_slave() once
[ Upstream commit 66b9231 ] If some bits were cleared by i2c_dw_read_clear_intrbits_slave() in i2c_dw_isr_slave() and not handled immediately, those cleared bits would not be shown again by later i2c_dw_read_clear_intrbits_slave(). They therefore were forgotten to be handled. i2c_dw_read_clear_intrbits_slave() should be called once in an ISR and take its returned state for all later handlings. Signed-off-by: Michael Wu <michael.wu@vatics.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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