crypto: qat - check return code of qat_hal_rd_rel_reg()

Check the return code of the function qat_hal_rd_rel_reg() and return it
to the caller.

This is to fix the following warning when compiling the driver with
clang scan-build:

    drivers/crypto/qat/qat_common/qat_hal.c:1436:2: warning: 6th function call argument is an uninitialized value

Signed-off-by: Jack Xu <jack.xu@intel.com>
Co-developed-by: Zhehui Xiang <zhehui.xiang@intel.com>
Signed-off-by: Zhehui Xiang <zhehui.xiang@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/qat/qat_common/qat_hal.c b/drivers/crypto/qat/qat_common/qat_hal.c
index ed9b813471443d4241b8817c92993f34ce4d0b51..12ca6b8764aaac092dd02b43ff8cc03df6b23219 100644 (file)
--- a/drivers/crypto/qat/qat_common/qat_hal.c
+++ b/drivers/crypto/qat/qat_common/qat_hal.c
@@ -1417,7 +1417,11 @@ static int qat_hal_put_rel_wr_xfer(struct icp_qat_fw_loader_handle *handle,
                pr_err("QAT: bad xfrAddr=0x%x\n", xfr_addr);
                return -EINVAL;
        }
-       qat_hal_rd_rel_reg(handle, ae, ctx, ICP_GPB_REL, gprnum, &gprval);
+       status = qat_hal_rd_rel_reg(handle, ae, ctx, ICP_GPB_REL, gprnum, &gprval);
+       if (status) {
+               pr_err("QAT: failed to read register");
+               return status;
+       }
        gpr_addr = qat_hal_get_reg_addr(ICP_GPB_REL, gprnum);
        data16low = 0xffff & data;
        data16hi = 0xffff & (data >> 0x10);