diff mbox series

[v2,7/8] rtc: imx-sc: Align imx sc msg structs to 4

Message ID 13404bac8360852d86c61fad5ae5f0c91ffc4cb6.1582216144.git.leonard.crestez@nxp.com (mailing list archive)
State Accepted
Headers show
Series firmware: imx: Align imx SC msg structs to 4 | expand

Commit Message

Leonard Crestez Feb. 20, 2020, 4:29 p.m. UTC 
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: a3094fc1a15e ("rtc: imx-sc: add rtc alarm support")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-imx-sc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Alexandre Belloni March 3, 2020, 11:02 a.m. UTC | #1 
On 20/02/2020 18:29:38+0200, Leonard Crestez wrote:
> 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: a3094fc1a15e ("rtc: imx-sc: add rtc alarm support")
> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
>  drivers/rtc/rtc-imx-sc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
Applied, thanks.
diff mbox series

Patch

diff --git a/drivers/rtc/rtc-imx-sc.c b/drivers/rtc/rtc-imx-sc.c
index cf2c12107f2b..a5f59e6f862e 100644
--- a/drivers/rtc/rtc-imx-sc.c
+++ b/drivers/rtc/rtc-imx-sc.c
@@ -35,11 +35,11 @@  struct imx_sc_msg_timer_rtc_set_alarm {
 	u8 mon;
 	u8 day;
 	u8 hour;
 	u8 min;
 	u8 sec;
-} __packed;
+} __packed __aligned(4);
 
 static int imx_sc_rtc_read_time(struct device *dev, struct rtc_time *tm)
 {
 	struct imx_sc_msg_timer_get_rtc_time msg;
 	struct imx_sc_rpc_msg *hdr = &msg.hdr;