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| author | Shinya Kuribayashi <shinya.kuribayashi@necel.com> | 2009-11-06 21:51:36 +0900 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2009-12-09 00:19:12 +0000 |
| commit | 597fe310f16d8246eec856326aa497bfa1b5bfa3 (patch) | |
| tree | c8093cf8803bfe3793c46edcea965f9583e35e93 /drivers/i2c/busses/i2c-omap.c | |
| parent | 8f588e40c788e63756ca1028c253f9f663d7d1c5 (diff) | |
| download | blackbird-obmc-linux-597fe310f16d8246eec856326aa497bfa1b5bfa3.tar.gz blackbird-obmc-linux-597fe310f16d8246eec856326aa497bfa1b5bfa3.zip | |
i2c-designware: Skip RX_FULL and TX_EMPTY bits on tx abort errors
Suppose TX_ABRT occurs in the middle of processing i2c_msg msgs[], and
a STOP condition has already been generated on the bus. In this case,
subsequent i2c_dw_xfer_msg() might initiate a new and unnecessary I2C
transaction, which we'd have to avoid.
Furthermore, anytime TX_ABRT is set, the contents of tx/rx buffers are
flushed, so we don't have to process RX_FULL and TX_EMPTY.
Disable interrupts, and skip them.
Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-omap.c')
0 files changed, 0 insertions, 0 deletions
