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powerpc/tau: Synchronize function prototypes and body

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Some function prototypes and body for Thermal Assist Units were not in
sync. Update the function definition to match the existing function
declaration found in `setup-common.c`, changing an `int` return type to a
`u32` return type. Move the prototypes to a header file. Fix the following
warnings, treated as error with W=1:

  arch/powerpc/kernel/tau_6xx.c:257:5: error: no previous prototype for ‘cpu_temp_both’ [-Werror=missing-prototypes]
  arch/powerpc/kernel/tau_6xx.c:262:5: error: no previous prototype for ‘cpu_temp’ [-Werror=missing-prototypes]
  arch/powerpc/kernel/tau_6xx.c:267:5: error: no previous prototype for ‘tau_interrupts’ [-Werror=missing-prototypes]

Compile tested with CONFIG_TAU_INT.

Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mathieu Malaterre 2018-04-04 22:10:28 +02:00 committed by Michael Ellerman
parent 3fc5ee9b28
commit bd13ac95f9
4 changed files with 12 additions and 9 deletions
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2
arch/powerpc/kernel/irq.c
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@ -89,7 +89,7 @@ atomic_t ppc_n_lost_interrupts;
#ifdef CONFIG_TAU_INT
extern int tau_initialized;
extern int tau_interrupts(int);
u32 tau_interrupts(unsigned long cpu);
#endif
#endif /* CONFIG_PPC32 */

6
arch/powerpc/kernel/setup-common.c
View File

@ -192,12 +192,6 @@ void machine_halt(void)
machine_hang();
}
#ifdef CONFIG_TAU
extern u32 cpu_temp(unsigned long cpu);
extern u32 cpu_temp_both(unsigned long cpu);
#endif /* CONFIG_TAU */
#ifdef CONFIG_SMP
DEFINE_PER_CPU(unsigned int, cpu_pvr);
#endif

6
arch/powerpc/kernel/setup.h
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@ -62,4 +62,10 @@ void kvm_cma_reserve(void);
static inline void kvm_cma_reserve(void) { };
#endif
#ifdef CONFIG_TAU
u32 cpu_temp(unsigned long cpu);
u32 cpu_temp_both(unsigned long cpu);
u32 tau_interrupts(unsigned long cpu);
#endif /* CONFIG_TAU */
#endif /* __ARCH_POWERPC_KERNEL_SETUP_H */

7
arch/powerpc/kernel/tau_6xx.c
View File

@ -27,6 +27,9 @@
#include <asm/cache.h>
#include <asm/8xx_immap.h>
#include <asm/machdep.h>
#include <asm/asm-prototypes.h>
#include "setup.h"
static struct tau_temp
{
@ -259,12 +262,12 @@ u32 cpu_temp_both(unsigned long cpu)
return ((tau[cpu].high << 16) | tau[cpu].low);
}
int cpu_temp(unsigned long cpu)
u32 cpu_temp(unsigned long cpu)
{
return ((tau[cpu].high + tau[cpu].low) / 2);
}
int tau_interrupts(unsigned long cpu)
u32 tau_interrupts(unsigned long cpu)
{
return (tau[cpu].interrupts);
}