i2c: rcar: use correct length when unmapping DMA
authorWolfram Sang <wsa+renesas@sang-engineering.com>
Sun, 28 May 2017 07:52:17 +0000 (09:52 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Thu, 15 Jun 2017 13:51:44 +0000 (15:51 +0200)
commit916335036d4fe33f9806240cb0d1900f4975b959
treee8908263e64d2fe4564b5293711745f9f04a31db
parent32c1431eea4881a6b17bd7c639315010aeefa452
i2c: rcar: use correct length when unmapping DMA

Because we need to transfer some bytes with PIO, the msg length is not
the length of the DMA buffer. Use the correct value which we used when
doing the mapping.

Fixes: 73e8b0528346e8 ("i2c: rcar: add DMA support")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/i2c/busses/i2c-rcar.c