Hello Dmitry,
Am 12.11.20 um 02:27 schrieb Dmitry Torokhov:
> req->sample[1] is not naturally aligned at word boundary, and therefore
> we should use get_unaligned_be16() when accessing it.
>
> Fixes: 3eac5c7e44f3 ("Input: ads7846 - extend the driver for ads7845
> controller support")
> Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
I do not have ads7845, but i assume i need to resend my patch with the same
fix. Correct?
> ---
>
> Not tested on hardware, so if somebody has the controller and can verify
> that would be great.
>
>
> drivers/input/touchscreen/ads7846.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/touchscreen/ads7846.c
> b/drivers/input/touchscreen/ads7846.c
> index 95e89f675ad5..35d14bc44aff 100644
> --- a/drivers/input/touchscreen/ads7846.c
> +++ b/drivers/input/touchscreen/ads7846.c
> @@ -33,6 +33,7 @@
> #include <linux/regulator/consumer.h>
> #include <linux/module.h>
> #include <asm/irq.h>
> +#include <asm/unaligned.h>
>
> /*
> * This code has been heavily tested on a Nokia 770, and lightly
> @@ -443,7 +444,7 @@ static int ads7845_read12_ser(struct device *dev,
> unsigned command)
>
> if (status == 0) {
> /* BE12 value, then padding */
> - status = be16_to_cpu(*((u16 *)&req->sample[1]));
> + status = get_unaligned_be16(&req->sample[1]);
> status = status >> 3;
> status &= 0x0fff;
> }
>
--
Regards,
Oleksij
