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From: Jens Wiklander <jens.wiklander@linaro.org>
To: linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org
Cc: Sumit Garg <sumit.garg@linaro.org>,
	Herbert Xu <herbert@gondor.apana.org.au>,
	Devaraj Rangasamy <Devaraj.Rangasamy@amd.com>,
	Rijo Thomas <Rijo-john.Thomas@amd.com>,
	David Howells <dhowells@redhat.com>,
	Tyler Hicks <tyhicks@linux.microsoft.com>,
	Jens Wiklander <jens.wiklander@linaro.org>
Subject: [PATCH v3 08/12] optee: add optee_pool_op_free_helper()
Date: Tue, 25 Jan 2022 17:29:34 +0100	[thread overview]
Message-ID: <20220125162938.838382-9-jens.wiklander@linaro.org> (raw)
In-Reply-To: <20220125162938.838382-1-jens.wiklander@linaro.org>

Adds a common helper function to free a tee_shm allocated using the
helper function optee_pool_op_alloc_helper().

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
---
 drivers/tee/optee/core.c          | 10 ++++++++++
 drivers/tee/optee/ffa_abi.c       |  4 +---
 drivers/tee/optee/optee_private.h |  3 +++
 drivers/tee/optee/smc_abi.c       |  7 +++----
 4 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
index f4bccb5f0e93..daf947e98d14 100644
--- a/drivers/tee/optee/core.c
+++ b/drivers/tee/optee/core.c
@@ -69,6 +69,16 @@ int optee_pool_op_alloc_helper(struct tee_shm_pool *pool, struct tee_shm *shm,
 	return rc;
 }
 
+void optee_pool_op_free_helper(struct tee_shm_pool *pool, struct tee_shm *shm,
+			       int (*shm_unregister)(struct tee_context *ctx,
+						     struct tee_shm *shm))
+{
+	if (shm_unregister)
+		shm_unregister(shm->ctx, shm);
+	free_pages((unsigned long)shm->kaddr, get_order(shm->size));
+	shm->kaddr = NULL;
+}
+
 static void optee_bus_scan(struct work_struct *work)
 {
 	WARN_ON(optee_enumerate_devices(PTA_CMD_GET_DEVICES_SUPP));
diff --git a/drivers/tee/optee/ffa_abi.c b/drivers/tee/optee/ffa_abi.c
index fb7345941024..8cd9c70a9268 100644
--- a/drivers/tee/optee/ffa_abi.c
+++ b/drivers/tee/optee/ffa_abi.c
@@ -379,9 +379,7 @@ static int pool_ffa_op_alloc(struct tee_shm_pool *pool,
 static void pool_ffa_op_free(struct tee_shm_pool *pool,
 			     struct tee_shm *shm)
 {
-	optee_ffa_shm_unregister(shm->ctx, shm);
-	free_pages((unsigned long)shm->kaddr, get_order(shm->size));
-	shm->kaddr = NULL;
+	optee_pool_op_free_helper(pool, shm, optee_ffa_shm_unregister);
 }
 
 static void pool_ffa_op_destroy_pool(struct tee_shm_pool *pool)
diff --git a/drivers/tee/optee/optee_private.h b/drivers/tee/optee/optee_private.h
index df3a483bbf46..e77765c78878 100644
--- a/drivers/tee/optee/optee_private.h
+++ b/drivers/tee/optee/optee_private.h
@@ -236,6 +236,9 @@ int optee_pool_op_alloc_helper(struct tee_shm_pool *pool, struct tee_shm *shm,
 						   struct page **pages,
 						   size_t num_pages,
 						   unsigned long start));
+void optee_pool_op_free_helper(struct tee_shm_pool *pool, struct tee_shm *shm,
+			       int (*shm_unregister)(struct tee_context *ctx,
+						     struct tee_shm *shm));
 
 
 void optee_remove_common(struct optee *optee);
diff --git a/drivers/tee/optee/smc_abi.c b/drivers/tee/optee/smc_abi.c
index 0dc383c974a3..9c1c9cfb7488 100644
--- a/drivers/tee/optee/smc_abi.c
+++ b/drivers/tee/optee/smc_abi.c
@@ -548,10 +548,9 @@ static void pool_op_free(struct tee_shm_pool *pool,
 			 struct tee_shm *shm)
 {
 	if (!(shm->flags & TEE_SHM_PRIV))
-		optee_shm_unregister(shm->ctx, shm);
-
-	free_pages((unsigned long)shm->kaddr, get_order(shm->size));
-	shm->kaddr = NULL;
+		optee_pool_op_free_helper(pool, shm, optee_shm_unregister);
+	else
+		optee_pool_op_free_helper(pool, shm, NULL);
 }
 
 static void pool_op_destroy_pool(struct tee_shm_pool *pool)
-- 
2.31.1


  parent reply	other threads:[~2022-01-25 16:34 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-25 16:29 [PATCH v3 00/12] tee: shared memory updates Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 01/12] hwrng: optee-rng: use tee_shm_alloc_kernel_buf() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 02/12] tee: remove unused tee_shm_pool_alloc_res_mem() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 03/12] tee: add tee_shm_alloc_user_buf() Jens Wiklander
2022-01-27  5:56   ` Sumit Garg
2022-01-27  8:09     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 04/12] tee: simplify shm pool handling Jens Wiklander
2022-01-27  6:09   ` Sumit Garg
2022-01-27  8:27     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 05/12] tee: replace tee_shm_alloc() Jens Wiklander
2022-01-27  6:16   ` Sumit Garg
2022-01-27  8:31     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 06/12] optee: add driver private tee_context Jens Wiklander
2022-01-27  6:24   ` Sumit Garg
2022-01-25 16:29 ` [PATCH v3 07/12] optee: use driver internal tee_contex for some rpc Jens Wiklander
2022-01-27  6:32   ` Sumit Garg
2022-01-27 12:39     ` Jens Wiklander
2022-01-25 16:29 ` Jens Wiklander [this message]
2022-01-25 16:29 ` [PATCH v3 09/12] tee: add tee_shm_register_{user,kernel}_buf() Jens Wiklander
2022-01-27  6:35   ` Sumit Garg
2022-01-25 16:29 ` [PATCH v3 10/12] KEYS: trusted: tee: use tee_shm_register_kernel_buf() Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 11/12] tee: replace tee_shm_register() Jens Wiklander
2022-01-27  6:59   ` Sumit Garg
2022-01-27 13:00     ` Jens Wiklander
2022-01-25 16:29 ` [PATCH v3 12/12] tee: refactor TEE_SHM_* flags Jens Wiklander
2022-01-27  7:05   ` Sumit Garg

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