diff mbox series

[v7,09/28] powerpc: Use a function for byte swapping instructions

Message ID 20200501034220.8982-10-jniethe5@gmail.com (mailing list archive)
State Superseded
Headers show
Series Initial Prefixed Instruction support | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (54dc28ff5e0b3585224d49a31b53e030342ca5c3)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 17 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Jordan Niethe May 1, 2020, 3:42 a.m. UTC 
Use a function for byte swapping instructions in preparation of a more
complicated instruction type.

Reviewed-by: Balamuruhan S <bala24@linux.ibm.com>
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
---
 arch/powerpc/include/asm/inst.h | 5 +++++
 arch/powerpc/kernel/align.c     | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h
index 442a95f20de7..23fd57a86b03 100644
--- a/arch/powerpc/include/asm/inst.h
+++ b/arch/powerpc/include/asm/inst.h
@@ -18,4 +18,9 @@  static inline int ppc_inst_primary_opcode(u32 x)
 	return ppc_inst_val(x) >> 26;
 }
 
+static inline u32 ppc_inst_swab(u32 x)
+{
+	return ppc_inst(swab32(ppc_inst_val(x)));
+}
+
 #endif /* _ASM_INST_H */
diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 47dbba81a227..a63216da8cf1 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -310,7 +310,7 @@  int fix_alignment(struct pt_regs *regs)
 		/* We don't handle PPC little-endian any more... */
 		if (cpu_has_feature(CPU_FTR_PPC_LE))
 			return -EIO;
-		instr = swab32(instr);
+		instr = ppc_inst_swab(instr);
 	}
 
 #ifdef CONFIG_SPE