Messages in this thread | | | From | Sumit Garg <> | Date | Mon, 25 Apr 2022 19:48:46 +0530 | Subject | Re: [PATCH v2 2/2] tee: remove flags TEE_IOCTL_SHM_MAPPED and TEE_IOCTL_SHM_DMA_BUF |
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On Mon, 25 Apr 2022 at 19:46, Andrew Davis <afd@ti.com> wrote: > > These look to be leftover from an early edition of this driver. Userspace > does not need this information. Checking all users of this that I have > access to I have verified no one is using them. > > They leak internal use flags out to userspace. Even more they are not > correct anymore after a45ea4efa358. Lets drop these flags before > someone does try to use them for something and they become ABI. > > Signed-off-by: Andrew Davis <afd@ti.com> > --- > > Changes from v1: > - Removed flags return from tee_ioctl_shm_alloc() >
Acked-by: Sumit Garg <sumit.garg@linaro.org>
-Sumit
> drivers/tee/tee_core.c | 2 -- > include/uapi/linux/tee.h | 4 ---- > 2 files changed, 6 deletions(-) > > diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c > index 8aa1a4836b92f..af0f7c603fa46 100644 > --- a/drivers/tee/tee_core.c > +++ b/drivers/tee/tee_core.c > @@ -302,7 +302,6 @@ static int tee_ioctl_shm_alloc(struct tee_context *ctx, > return PTR_ERR(shm); > > data.id = shm->id; > - data.flags = shm->flags; > data.size = shm->size; > > if (copy_to_user(udata, &data, sizeof(data))) > @@ -339,7 +338,6 @@ tee_ioctl_shm_register(struct tee_context *ctx, > return PTR_ERR(shm); > > data.id = shm->id; > - data.flags = shm->flags; > data.length = shm->size; > > if (copy_to_user(udata, &data, sizeof(data))) > diff --git a/include/uapi/linux/tee.h b/include/uapi/linux/tee.h > index 25a6c534beb1b..23e57164693c4 100644 > --- a/include/uapi/linux/tee.h > +++ b/include/uapi/linux/tee.h > @@ -42,10 +42,6 @@ > #define TEE_IOC_MAGIC 0xa4 > #define TEE_IOC_BASE 0 > > -/* Flags relating to shared memory */ > -#define TEE_IOCTL_SHM_MAPPED 0x1 /* memory mapped in normal world */ > -#define TEE_IOCTL_SHM_DMA_BUF 0x2 /* dma-buf handle on shared memory */ > - > #define TEE_MAX_ARG_SIZE 1024 > > #define TEE_GEN_CAP_GP (1 << 0)/* GlobalPlatform compliant TEE */ > -- > 2.17.1 >
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