i2c: smbus: use DMA safe buffers for emulated SMBus transactions

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For all block commands, try to allocate a DMA safe buffer and mark it
accordingly. Only use the stack, if the buffers cannot be allocated.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

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Wolfram Sang 2017-11-04 21:20:06 +01:00 • committed by Wolfram Sang

parent ba98645c7d

commit 8a77821e74

1 changed files with 39 additions and 6 deletions

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drivers/i2c/i2c-core-smbus.c

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