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| author | Cedric Neveux <cedric.neveux@nxp.com> | 2019-03-04 08:54:23 +0100 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2020-08-21 08:55:13 +0200 |
| commit | ba171d3f0850003216fd1a85190d17b1feddb961 (patch) | |
| tree | 32c534e8e4d18d1e2a9350b7333f53325137c209 /include/linux/tee_drv.h | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| download | linux-stable-ba171d3f0850003216fd1a85190d17b1feddb961.tar.gz linux-stable-ba171d3f0850003216fd1a85190d17b1feddb961.tar.bz2 linux-stable-ba171d3f0850003216fd1a85190d17b1feddb961.zip | |
driver: tee: Handle NULL pointer indication from client
TEE Client introduce a new capability "TEE_GEN_CAP_MEMREF_NULL"
to handle the support of the shared memory buffer with a NULL pointer.
This capability depends on TEE Capabilities and driver support.
Driver and TEE exchange capabilities at driver initialization.
Signed-off-by: Michael Whitfield <michael.whitfield@nxp.com>
Signed-off-by: Cedric Neveux <cedric.neveux@nxp.com>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (QEMU)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'include/linux/tee_drv.h')
| -rw-r--r-- | include/linux/tee_drv.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h index d074302989dd..cdd049a724b1 100644 --- a/include/linux/tee_drv.h +++ b/include/linux/tee_drv.h @@ -47,6 +47,8 @@ struct tee_shm_pool; * and just return with an error code. It is needed for requests * that arises from TEE based kernel drivers that should be * non-blocking in nature. + * @cap_memref_null: flag indicating if the TEE Client support shared + * memory buffer with a NULL pointer. */ struct tee_context { struct tee_device *teedev; @@ -54,6 +56,7 @@ struct tee_context { struct kref refcount; bool releasing; bool supp_nowait; + bool cap_memref_null; }; struct tee_param_memref { |