diff options
| author |   Sumit Garg <sumit.garg@linaro.org> | 2019-12-30 18:52:40 +0530 |
|---|---|---|
| committer |   Jens Wiklander <jens.wiklander@linaro.org> | 2020-01-03 11:21:12 +0100 |
| commit | 5a769f6ff439cedc547395a6dc78faa26108f741 (patch) | |
| tree | a9e3402daab21bb7022737099fa54e2848f6d694 /drivers/tee/optee/shm_pool.c | |
| parent | Linux 5.5-rc2 (diff) | |
| download | linux-dev-5a769f6ff439cedc547395a6dc78faa26108f741.tar.xz linux-dev-5a769f6ff439cedc547395a6dc78faa26108f741.zip | |
optee: Fix multi page dynamic shm pool alloc
optee_shm_register() expected pages to be passed as an array of page
pointers rather than as an array of contiguous pages. So fix that via
correctly passing pages as per expectation.
Fixes: a249dd200d03 ("tee: optee: Fix dynamic shm pool allocations")
Reported-by: Vincent Cao <vincent.t.cao@intel.com>
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Tested-by: Vincent Cao <vincent.t.cao@intel.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'drivers/tee/optee/shm_pool.c')
| -rw-r--r-- | drivers/tee/optee/shm_pool.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/tee/optee/shm_pool.c b/drivers/tee/optee/shm_pool.c index 0332a5301d61..d767eebf30bd 100644 --- a/drivers/tee/optee/shm_pool.c +++ b/drivers/tee/optee/shm_pool.c @@ -28,9 +28,22 @@ static int pool_op_alloc(struct tee_shm_pool_mgr *poolm, shm->size = PAGE_SIZE << order; if (shm->flags & TEE_SHM_DMA_BUF) { + unsigned int nr_pages = 1 << order, i; + struct page **pages; + + pages = kcalloc(nr_pages, sizeof(pages), GFP_KERNEL); + if (!pages) + return -ENOMEM; + + for (i = 0; i < nr_pages; i++) { + pages[i] = page; + page++; + } + shm->flags |= TEE_SHM_REGISTER; - rc = optee_shm_register(shm->ctx, shm, &page, 1 << order, + rc = optee_shm_register(shm->ctx, shm, pages, nr_pages, (unsigned long)shm->kaddr); + kfree(pages); } return rc; |