tree 128c3f5257c96ff7b8c42d512269d1526002a17a
parent e90e8da72ad694a16a4ffa6e5adae3610208f73b
author Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> 1508469162 +0900
committer Ulf Hansson <ulf.hansson@linaro.org> 1508491498 +0200

mmc: renesas_sdhi: fix kernel panic in _internal_dmac.c

Since this driver checks if the return value of dma_map_sg() is minus
or not and keeps to enable the DMAC, it may cause kernel panic when
the dma_map_sg() returns 0. So, this patch fixes the issue.

Reported-by: Dirk Behme <dirk.behme@de.bosch.com>
Fixes: 2a68ea7896e3 ("mmc: renesas-sdhi: add support for R-Car Gen3 SDHI DMAC")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>