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Subject[PATCH 2/5] ARC: add helpers to sanitize config options
Date
We'll use this macro in coming patches extensively.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
arch/arc/kernel/setup.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 7ee89dc61f6e..edb55b6ee278 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -389,11 +389,23 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
return buf;
}

+static void chk_opt_strict(char *opt_name, bool hw_exists, bool opt_ena)
+{
+ if (hw_exists && !opt_ena)
+ pr_warn(" ! Enable %s for working apps\n", opt_name);
+ else if (!hw_exists && opt_ena)
+ panic("Disable %s, hardware NOT present\n", opt_name);
+}
+
+#define CHK_OPT_STRICT(opt_name, hw_exists) \
+({ \
+ chk_opt_strict(#opt_name, hw_exists, IS_ENABLED(opt_name)); \
+})
+
static void arc_chk_core_config(void)
{
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
- int saved = 0, present = 0;
- char *opt_nm = NULL;
+ int present = 0;

if (!cpu->extn.timer0)
panic("Timer0 is not present!\n");
@@ -425,23 +437,14 @@ static void arc_chk_core_config(void)
*/

if (is_isa_arcompact()) {
- opt_nm = "CONFIG_ARC_FPU_SAVE_RESTORE";
- saved = IS_ENABLED(CONFIG_ARC_FPU_SAVE_RESTORE);
-
/* only DPDP checked since SP has no arch visible regs */
present = cpu->extn.fpu_dp;
+ CHK_OPT_STRICT(CONFIG_ARC_FPU_SAVE_RESTORE, present);
} else {
- opt_nm = "CONFIG_ARC_HAS_ACCL_REGS";
- saved = IS_ENABLED(CONFIG_ARC_HAS_ACCL_REGS);
-
/* Accumulator Low:High pair (r58:59) present if DSP MPY or FPU */
present = cpu->extn_mpy.dsp | cpu->extn.fpu_sp | cpu->extn.fpu_dp;
+ CHK_OPT_STRICT(CONFIG_ARC_HAS_ACCL_REGS, present);
}
-
- if (present && !saved)
- pr_warn("Enable %s for working apps\n", opt_nm);
- else if (!present && saved)
- panic("Disable %s, hardware NOT present\n", opt_nm);
}

/*
--
2.21.0
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