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MLK-23403-1 Fix fail cat /sys/devices/soc0/soc_uid 

SCU IMX_SC_MISC_FUNC_UNIQUE_ID don't return value by scu
return value from SCU is undefined.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Frank Li 2020-02-27 13:37:45 -06:00
parent 862ea84e94
commit 1d6395a58c
1 changed files with 3 additions and 6 deletions
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9
drivers/soc/imx/soc-imx-scu.c
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@ -41,18 +41,15 @@ static ssize_t soc_uid_show(struct device *dev,
struct imx_sc_msg_misc_get_soc_uid msg;
struct imx_sc_rpc_msg *hdr = &msg.hdr;
u64 soc_uid;
int ret;
memset(&msg, 0, sizeof(msg));
hdr->ver = IMX_SC_RPC_VERSION;
hdr->svc = IMX_SC_RPC_SVC_MISC;
hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
hdr->size = 1;
ret = imx_scu_call_rpc(soc_ipc_handle, &msg, true);
if (ret) {
pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
return ret;
}
imx_scu_call_rpc(soc_ipc_handle, &msg, true);
soc_uid = msg.uid_high;
soc_uid <<= 32;