From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/tee/optee/shm_pool.c | 44 ++++++++++++++++++++++++++++++++++----------
1 files changed, 34 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/tee/optee/shm_pool.c b/kernel/drivers/tee/optee/shm_pool.c
index 4939781..fa75024 100644
--- a/kernel/drivers/tee/optee/shm_pool.c
+++ b/kernel/drivers/tee/optee/shm_pool.c
@@ -1,16 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015, Linaro Limited
* Copyright (c) 2017, EPAM Systems
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
*/
#include <linux/device.h>
#include <linux/dma-buf.h>
@@ -26,6 +17,7 @@
{
unsigned int order = get_order(size);
struct page *page;
+ int rc = 0;
page = alloc_pages(GFP_KERNEL | __GFP_ZERO, order);
if (!page)
@@ -35,12 +27,44 @@
shm->paddr = page_to_phys(page);
shm->size = PAGE_SIZE << order;
+ /*
+ * Shared memory private to the OP-TEE driver doesn't need
+ * to be registered with OP-TEE.
+ */
+ if (!(shm->flags & TEE_SHM_PRIV)) {
+ unsigned int nr_pages = 1 << order, i;
+ struct page **pages;
+
+ pages = kcalloc(nr_pages, sizeof(pages), GFP_KERNEL);
+ if (!pages) {
+ rc = -ENOMEM;
+ goto err;
+ }
+
+ for (i = 0; i < nr_pages; i++)
+ pages[i] = page + i;
+
+ shm->flags |= TEE_SHM_REGISTER;
+ rc = optee_shm_register(shm->ctx, shm, pages, nr_pages,
+ (unsigned long)shm->kaddr);
+ kfree(pages);
+ if (rc)
+ goto err;
+ }
+
return 0;
+
+err:
+ __free_pages(page, order);
+ return rc;
}
static void pool_op_free(struct tee_shm_pool_mgr *poolm,
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;
}
--
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