| From 00851c43f4d00e7451550660ab652e9ac9128e02 Mon Sep 17 00:00:00 2001 |
| From: Emekcan <emekcan.aras@arm.com> |
| Date: Thu, 13 Oct 2022 20:53:42 +0100 |
| Subject: [PATCH 6/6] Adds workaround for cs1k specific bug |
| |
| Adds a temporary workaround to solve a possible |
| race-conditioning issue in the tee driver |
| for corstone1000. |
| |
| Upstream-Status: Inappropriate |
| Signed-off-by: Emekcan Aras <emekcan.aras@arm.com> |
| Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> |
| --- |
| drivers/firmware/arm_ffa/driver.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c |
| index d5e86ef40b89..cbb944f63321 100644 |
| --- a/drivers/firmware/arm_ffa/driver.c |
| +++ b/drivers/firmware/arm_ffa/driver.c |
| @@ -32,6 +32,7 @@ |
| #include <linux/scatterlist.h> |
| #include <linux/slab.h> |
| #include <linux/uuid.h> |
| +#include <linux/delay.h> |
| |
| #include "common.h" |
| |
| @@ -362,7 +363,7 @@ static int ffa_msg_send_direct_req(u16 src_id, u16 dst_id, bool mode_32bit, |
| { |
| u32 req_id, resp_id, src_dst_ids = PACK_TARGET_INFO(src_id, dst_id); |
| ffa_value_t ret; |
| - |
| + msleep(1); |
| if (mode_32bit) { |
| req_id = FFA_MSG_SEND_DIRECT_REQ; |
| resp_id = FFA_MSG_SEND_DIRECT_RESP; |
| -- |
| 2.39.0 |
| |