clk: imx: Align imx sc clock parent msg structs to 4

The imx SC api strongly assumes that messages are composed out of
4-bytes words but some of our message structs have odd sizeofs.

This produces many oopses with CONFIG_KASAN=y.

Fix by marking with __aligned(4).

Fixes: 666aed2d13ee ("clk: imx: scu: add set parent support")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Link: https://lkml.kernel.org/r/aad021e432b3062c142973d09b766656eec18fde.1582216144.git.leonard.crestez@nxp.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 3c5c42d..b8b2072 100644 (file)
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -84,7 +84,7 @@ struct imx_sc_msg_get_clock_parent {
                struct req_get_clock_parent {
                        __le16 resource;
                        u8 clk;
-               } __packed req;
+               } __packed __aligned(4) req;
                struct resp_get_clock_parent {
                        u8 parent;
                } resp;