On Sat, Jul 07, 2018 at 05:29:54PM +0800, Jun Gao wrote:

From: Jun Gao <redacted>

This function is needed by i2c_get_dma_safe_msg_buf() potentially.
It is used to free DMA safe buffer when DMA operation fails.

Signed-off-by: Jun Gao <redacted>

Right, we need something like this. This leaks in the sh_mobile driver,
too :(

I am still thinking if there is a nice way to put this functionality
into i2c_release_dma_safe_msg_buf() itself somehow...

Thanks!