| From b81214dea7056c3877aa9eb775557dc4702660ec Mon Sep 17 00:00:00 2001 |
| From: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com> |
| Date: Sun, 12 Dec 2021 17:58:08 +0000 |
| Subject: [PATCH 21/27] Update comm_buf when EFI_BUFFER_TOO_SMALL |
| |
| When the received buffer is larger than the comm buffer, |
| the contents of the shared buffer which can fit in the |
| comm buffer should be read before returning. |
| |
| Signed-off-by: Gowtham Suresh Kumar <gowtham.sureshkumar@arm.com> |
| Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> |
| --- |
| lib/efi_loader/efi_variable_tee.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/lib/efi_loader/efi_variable_tee.c b/lib/efi_loader/efi_variable_tee.c |
| index 38655a9dbb7c..67743d1f8fce 100644 |
| --- a/lib/efi_loader/efi_variable_tee.c |
| +++ b/lib/efi_loader/efi_variable_tee.c |
| @@ -357,6 +357,7 @@ static efi_status_t __efi_runtime ffa_mm_communicate(void *comm_buf, ulong comm_ |
| sizeof(size_t); |
| |
| if (rx_data_size > comm_buf_size) { |
| + efi_memcpy_runtime(comm_buf, virt_shared_buf, comm_buf_size); |
| unmap_sysmem(virt_shared_buf); |
| return EFI_BUFFER_TOO_SMALL; |
| } |
| -- |
| 2.30.2 |
| |