diff options
Diffstat (limited to 'drivers/firmware/firmware-zynqmp.c')
-rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index d4dc856..b44fede 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -29,6 +29,10 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen) { struct zynqmp_ipi_msg msg; int ret; + u32 buffer[PAYLOAD_ARG_CNT]; + + if (!res) + res = buffer; if (req_len > PMUFW_PAYLOAD_ARG_CNT || res_maxlen > PMUFW_PAYLOAD_ARG_CNT) @@ -164,6 +168,7 @@ int __maybe_unused xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2, * firmware API is limited by the SMC call size */ u32 regs[] = {api_id, arg0, arg1, arg2, arg3}; + int ret; if (api_id == PM_FPGA_LOAD) { /* Swap addr_hi/low because of incompatibility */ @@ -173,7 +178,10 @@ int __maybe_unused xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2, regs[2] = temp; } - ipi_req(regs, PAYLOAD_ARG_CNT, ret_payload, PAYLOAD_ARG_CNT); + ret = ipi_req(regs, PAYLOAD_ARG_CNT, ret_payload, + PAYLOAD_ARG_CNT); + if (ret) + return ret; #else return -EPERM; #endif |