powerpc: Remove duplicate/unnecessary ifdefs

When an ifdef is used in the below manner, second one could be considered
as duplicate.

  ifdef DEFINE_A
  ...code block...
  ifdef DEFINE_A       <-- This is a duplicate.
  ...code block...
  endif
  else
  ifndef DEFINE_A     <-- This is also duplicate.
  ...code block...
  endif
  endif

More details about the script and methods used to find these code
patterns are in cover letter of [1].

Few places in arch/powerpc where this pattern was seen:

  paca.h:
  Hunk1: Code is under check of CONFIG_PPC64 from line 13, hence the
  second CONFIG_PPC64 at line 166 is a duplicate.
  Hunk2: CONFIG_PPC_BOOK3S_64 was defined back to back. Merged the two
  ifdefs.

  asm-offsets.c:
  Code is under check of CONFIG_PPC64 from line 176 hence second
  CONFIG_PPC64 at line 249 is a duplicate.

  powermac/feature.c:
  #ifndef CONFIG_PPC64 is used at line 2066. And then in #else again
  #ifdef CONFIG_PPC64 is used. Which is a duplicate since in #else means
  CONFIG_PPC64 is defined.

  xmon.c:
  Code is under the check of CONFIG_SMP from line 521 hence the same
  check of CONFIG_SMP at line 646 is a duplicate.

No functional change is intended here. It only aims to improve code
readability.

[1] https://lore.kernel.org/all/20240118080326.13137-1-sshegde@linux.ibm.com/

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240216053016.528906-1-sshegde@linux.ibm.com

diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index e667d455ecb418a5a96e13464512b0506defeb3e..1d58da9467396f268a1aac8b1d9461e570a97569 100644 (file)
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -163,9 +163,7 @@ struct paca_struct {
        u64 kstack;                     /* Saved Kernel stack addr */
        u64 saved_r1;                   /* r1 save for RTAS calls or PM or EE=0 */
        u64 saved_msr;                  /* MSR saved here by enter_rtas */
-#ifdef CONFIG_PPC64
        u64 exit_save_r1;               /* Syscall/interrupt R1 save */
-#endif
 #ifdef CONFIG_PPC_BOOK3E_64
        u16 trap_save;                  /* Used when bad stack is encountered */
 #endif
@@ -214,8 +212,6 @@ struct paca_struct {
        /* Non-maskable exceptions that are not performance critical */
        u64 exnmi[EX_SIZE];     /* used for system reset (nmi) */
        u64 exmc[EX_SIZE];      /* used for machine checks */
-#endif
-#ifdef CONFIG_PPC_BOOK3S_64
        /* Exclusive stacks for system reset and machine check exception. */
        void *nmi_emergency_sp;
        void *mc_emergency_sp;

diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 9f14d95b8b32fd38ce180b9abe082a42b1f51cfd..f029755f9e69af897dbf2bd456dd335e99e3ac04 100644 (file)
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -246,9 +246,7 @@ int main(void)
        OFFSET(PACAHWCPUID, paca_struct, hw_cpu_id);
        OFFSET(PACAKEXECSTATE, paca_struct, kexec_state);
        OFFSET(PACA_DSCR_DEFAULT, paca_struct, dscr_default);
-#ifdef CONFIG_PPC64
        OFFSET(PACA_EXIT_SAVE_R1, paca_struct, exit_save_r1);
-#endif
 #ifdef CONFIG_PPC_BOOK3E_64
        OFFSET(PACA_TRAP_SAVE, paca_struct, trap_save);
 #endif

diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index 81c9fbae88b140253c9551e451b8a71645e00953..2cc257f75c50f66dbce3e3dd73ca6b69dd87bab4 100644 (file)
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -2333,7 +2333,6 @@ static struct pmac_mb_def pmac_mb_defs[] = {
                PMAC_TYPE_POWERMAC_G5,          g5_features,
                0,
        },
-#ifdef CONFIG_PPC64
        {       "PowerMac7,3",                  "PowerMac G5",
                PMAC_TYPE_POWERMAC_G5,          g5_features,
                0,
@@ -2359,7 +2358,6 @@ static struct pmac_mb_def pmac_mb_defs[] = {
                0,
        },
 #endif /* CONFIG_PPC64 */
-#endif /* CONFIG_PPC64 */
 };
 
 /*

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index b3b94cd37713738c580824053bf8daca5c8bffc4..f413c220165c0321466136f17b1abf8b1d4cd493 100644 (file)
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -643,10 +643,8 @@ static int xmon_core(struct pt_regs *regs, volatile int fromipi)
                        touch_nmi_watchdog();
                } else {
                        cmd = 1;
-#ifdef CONFIG_SMP
                        if (xmon_batch)
                                cmd = batch_cmds(regs);
-#endif
                        if (!locked_down && cmd)
                                cmd = cmds(regs);
                        if (locked_down || cmd != 0) {