From e9cb0497b1c801a66f9abc907b2c55241099e6ac Mon Sep 17 00:00:00 2001 From: Richard Gong Date: Mon, 4 Nov 2019 10:24:36 -0600 Subject: firmware: Fix incompatible function behavior for RSU driver The older versions of remote system update (RSU) firmware don't support retry and notify features then the kernel module dies when it queries the RSU retry counter or performs notify operation. Update the Intel service layer and RSU drivers to be compatible with all versions of RSU firmware. Reported-by: Radu Barcau Reported-by: kbuild test robot Signed-off-by: Richard Gong Link: https://lore.kernel.org/r/1572884676-1385-1-git-send-email-richard.gong@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/firmware/stratix10-svc.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers/firmware/stratix10-svc.c') diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c index b485321189e1..c6c31402848d 100644 --- a/drivers/firmware/stratix10-svc.c +++ b/drivers/firmware/stratix10-svc.c @@ -493,8 +493,24 @@ static int svc_normal_to_secure_thread(void *data) pdata->chan->scl->receive_cb(pdata->chan->scl, cbdata); break; default: - pr_warn("it shouldn't happen\n"); + pr_warn("Secure firmware doesn't support...\n"); + + /* + * be compatible with older version firmware which + * doesn't support RSU notify or retry + */ + if ((pdata->command == COMMAND_RSU_RETRY) || + (pdata->command == COMMAND_RSU_NOTIFY)) { + cbdata->status = + BIT(SVC_STATUS_RSU_NO_SUPPORT); + cbdata->kaddr1 = NULL; + cbdata->kaddr2 = NULL; + cbdata->kaddr3 = NULL; + pdata->chan->scl->receive_cb( + pdata->chan->scl, cbdata); + } break; + } }; -- cgit v1.2.3