linux-kernel - [PATCH 5/5] tee: tee_shm_op_mmap(): use TEE_SHM_USER

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Message-Id: <20200109123651.18520-6-jens.wiklander@linaro.org>
Date:   Thu,  9 Jan 2020 13:36:51 +0100
From:   Jens Wiklander <jens.wiklander@...aro.org>
To:     tee-dev@...ts.linaro.org, linux-kernel@...r.kernel.org
Cc:     Jerome Forissier <jerome@...issier.org>,
        Sumit Garg <sumit.garg@...aro.org>,
        Etienne Carriere <etienne.carriere@...aro.org>,
        Rijo Thomas <Rijo-john.Thomas@....com>,
        Devaraj Rangasamy <Devaraj.Rangasamy@....com>,
        Jens Wiklander <jens.wiklander@...aro.org>
Subject: [PATCH 5/5] tee: tee_shm_op_mmap(): use TEE_SHM_USER_MAPPED

tee_shm_op_mmap() uses the TEE_SHM_USER_MAPPED flag instead of the
TEE_SHM_REGISTER flag to tell if a shared memory object is originating
from registered user space memory.

Signed-off-by: Jens Wiklander <jens.wiklander@...aro.org>
---
 drivers/tee/tee_shm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c
index c64ec5c5e464..deb22f877881 100644
--- a/drivers/tee/tee_shm.c
+++ b/drivers/tee/tee_shm.c
@@ -81,7 +81,7 @@ static int tee_shm_op_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma)
 	size_t size = vma->vm_end - vma->vm_start;
 
 	/* Refuse sharing shared memory provided by application */
-	if (shm->flags & TEE_SHM_REGISTER)
+	if (shm->flags & TEE_SHM_USER_MAPPED)
 		return -EINVAL;
 
 	return remap_pfn_range(vma, vma->vm_start, shm->paddr >> PAGE_SHIFT,
-- 
2.17.1