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(parent: fe23aa9) | patch
i2c: rcar: skip DMA if buffer is not safe
authorWolfram Sang <wsa+renesas@sang-engineering.com>
Sat, 4 Nov 2017 20:20:09 +0000 (21:20 +0100)
committerWolfram Sang <wsa@the-dreams.de>
Sun, 3 Dec 2017 20:25:00 +0000 (21:25 +0100)
commitadbd77b589d0345cfc42f1ae0b3414e62a2bf866
treed06e192b7c1a94926d4b8f79f515cabb37bbee1etree
parentfe23aa9a1670b8800b251fc0400425e765c81880commit | diff
i2c: rcar: skip DMA if buffer is not safe

This HW is prone to races, so it needs to setup new messages in irq
context. That means we can't alloc bounce buffers if a message buffer is
not DMA safe. So, in that case, simply fall back to PIO.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/i2c/busses/i2c-rcar.c diff | blob | history
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