[PATCH] MIPS: CPC: Use bitfield helpers

From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH] MIPS: CPC: Use bitfield helpers
Date: Mon, 22 Nov 2021 16:53:46 +0100	[thread overview]
Message-ID: <35f0f17e3d987afaa9cd09cdcb8131d42a53c3e1.1637593297.git.geert+renesas@glider.be> (raw)
In-Reply-To: <a1445d3abb45cfc95cb1b03180fd53caf122035b.1637593297.git.geert+renesas@glider.be>

Use the FIELD_PREP() helper, instead of open-coding the same operation.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Compile-tested only.

See "[PATCH 00/17] Non-const bitfield helper conversions"
(https://lore.kernel.org/r/cover.1637592133.git.geert+renesas@glider.be)
for background and more conversions.
---
 arch/mips/kernel/mips-cpc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/mips-cpc.c b/arch/mips/kernel/mips-cpc.c
index 8d2535123f11c8f3..17aff13cd7ce6ea7 100644
--- a/arch/mips/kernel/mips-cpc.c
+++ b/arch/mips/kernel/mips-cpc.c
@@ -4,6 +4,7 @@
  * Author: Paul Burton <paul.burton@mips.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/errno.h>
 #include <linux/percpu.h>
 #include <linux/of.h>
@@ -97,7 +98,7 @@ void mips_cpc_lock_other(unsigned int core)
 	curr_core = cpu_core(&current_cpu_data);
 	spin_lock_irqsave(&per_cpu(cpc_core_lock, curr_core),
 			  per_cpu(cpc_core_lock_flags, curr_core));
-	write_cpc_cl_other(core << __ffs(CPC_Cx_OTHER_CORENUM));
+	write_cpc_cl_other(FIELD_PREP(CPC_Cx_OTHER_CORENUM, core));
 
 	/*
 	 * Ensure the core-other region reflects the appropriate core &
-- 
2.25.1

