Felix Held submitted this change.
cpu/x86/smi_trigger: use enum cb_err as apm_control return type
Even though the return value from apm_control isn't checked at any of
its call sites, using the cb_err enum instead of an integer as return
type makes it clearer what the returned value means.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I07ced74cae915df52a9d439835b84237d51fdd11
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79835
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
---
M src/cpu/x86/smi_trigger.c
M src/include/cpu/x86/smm.h
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/cpu/x86/smi_trigger.c b/src/cpu/x86/smi_trigger.c
index 9781642..5c63b9e 100644
--- a/src/cpu/x86/smi_trigger.c
+++ b/src/cpu/x86/smi_trigger.c
@@ -29,11 +29,11 @@
}
}
-int apm_control(u8 cmd)
+enum cb_err apm_control(u8 cmd)
{
/* Never proceed inside SMI handler or without one. */
if (ENV_SMM || !CONFIG(HAVE_SMI_HANDLER))
- return -1;
+ return CB_ERR;
apmc_log(__func__, cmd);
@@ -41,7 +41,7 @@
outb(cmd, pm_acpi_smi_cmd_port());
printk(BIOS_DEBUG, "APMC done.\n");
- return 0;
+ return CB_SUCCESS;
}
u8 apm_get_apmc(void)
diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h
index a240ac2..dfb27cd 100644
--- a/src/include/cpu/x86/smm.h
+++ b/src/include/cpu/x86/smm.h
@@ -43,7 +43,7 @@
#endif
/* Send cmd to APM_CNT with HAVE_SMI_HANDLER checking. */
-int apm_control(u8 cmd);
+enum cb_err apm_control(u8 cmd);
u8 apm_get_apmc(void);
void io_trap_handler(int smif);
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