i2c-designware: Disable TX_EMPTY when all i2c_msg msgs has been processed

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Currently we disable TX_EMPTY interrupt when buf_len is zero, but this
is wrong.  (buf_len == 0) means that all transmit data in the current
i2c_msg message has been sent out, but that doesn't necessarily mean
all i2c_msg messages have been processed.

TX_EMPTY interrupt is used as the driving force of DW I2C transactions,
so we need to keep it enabled as long as i2c_msg messages are available.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

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Shinya Kuribayashi 2009-11-06 21:51:00 +09:00 • committed by Ben Dooks

parent 201d6a70b7

commit 69151e532c

1 changed files with 8 additions and 3 deletions

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drivers/i2c/busses/i2c-designware.c

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