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Tegra: common: improve cyclomatic complexity

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Code complexity is a good indication of maintainability versus
testability of a piece of software.

ISO26262 introduces the following thresholds:

    complexity < 10 is accepted
    10 <= complexity < 20 has to be justified
    complexity >= 20 cannot be accepted

Rationale is that number of test cases to fully test a piece of
software can (depending on the coverage metrics) grow exponentially
with the number of branches in the software.

This patch removes redundant conditionals from 'bl31_early_platform_setup'
handler to reduce the McCabe Cyclomatic Complexity for this function.

Change-Id: Ifb628e33269b388f9323639cd97db761a7e049c4
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2018-06-20 13:43:43 -07:00
parent 37f760241e
commit ee21281a5f
1 changed files with 11 additions and 13 deletions
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24
plat/nvidia/tegra/common/tegra_bl31_setup.c
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@ -1,5 +1,6 @@
/* /*
* Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
* Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -102,7 +103,6 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
struct tegra_bl31_params *arg_from_bl2 = (struct tegra_bl31_params *) arg0; struct tegra_bl31_params *arg_from_bl2 = (struct tegra_bl31_params *) arg0;
plat_params_from_bl2_t *plat_params = (plat_params_from_bl2_t *)arg1; plat_params_from_bl2_t *plat_params = (plat_params_from_bl2_t *)arg1;
image_info_t bl32_img_info = { {0} }; image_info_t bl32_img_info = { {0} };
uint64_t tzdram_start, tzdram_end, bl32_start, bl32_end;
int32_t ret; int32_t ret;
/* /*
@ -163,20 +163,17 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
* location to store the boot profiler logs. Sanity check the * location to store the boot profiler logs. Sanity check the
* address and initialise the profiler library, if it looks ok. * address and initialise the profiler library, if it looks ok.
*/ */
if (plat_params->boot_profiler_shmem_base != 0ULL) { ret = bl31_check_ns_address(plat_params->boot_profiler_shmem_base,
PROFILER_SIZE_BYTES);
if (ret == (int32_t)0) {
ret = bl31_check_ns_address(plat_params->boot_profiler_shmem_base, /* store the membase for the profiler lib */
PROFILER_SIZE_BYTES); plat_bl31_params_from_bl2.boot_profiler_shmem_base =
if (ret == (int32_t)0) { plat_params->boot_profiler_shmem_base;
/* store the membase for the profiler lib */ /* initialise the profiler library */
plat_bl31_params_from_bl2.boot_profiler_shmem_base = boot_profiler_init(plat_params->boot_profiler_shmem_base,
plat_params->boot_profiler_shmem_base; TEGRA_TMRUS_BASE);
/* initialise the profiler library */
boot_profiler_init(plat_params->boot_profiler_shmem_base,
TEGRA_TMRUS_BASE);
}
} }
/* /*
@ -205,6 +202,7 @@ void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
*/ */
if (arg_from_bl2->bl32_image_info != NULL) { if (arg_from_bl2->bl32_image_info != NULL) {
uint64_t tzdram_start, tzdram_end, bl32_start, bl32_end;
bl32_img_info = *arg_from_bl2->bl32_image_info; bl32_img_info = *arg_from_bl2->bl32_image_info;
/* Relocate BL32 if it resides outside of the TZDRAM */ /* Relocate BL32 if it resides outside of the TZDRAM */