linux-kernel - [PATCH 4/5] riscv: treat cpu devicetree nodes without status as enabled

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Date:   Fri, 18 Jan 2019 15:03:07 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Palmer Dabbelt <palmer@...ive.com>
Cc:     Albert Ou <aou@...s.berkeley.edu>, Andreas Schwab <schwab@...e.de>,
        Atish Patra <atish.patra@....com>,
        Anup Patel <anup@...infault.org>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>
Subject: [PATCH 4/5] riscv: treat cpu devicetree nodes without status as enabled

Follow the Linux convention and treat devicetree nodes without a status
property as enabled rather than disabled, while also allowing "ok" as a
shorthand for "okay".

Signed-off-by: Johan Hovold <johan@...nel.org>
---
 arch/riscv/kernel/cpu.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/riscv/kernel/cpu.c b/arch/riscv/kernel/cpu.c
index 974d374fd36b..d1d9bfd5a89f 100644
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
@@ -22,7 +22,7 @@
  */
 int riscv_of_processor_hartid(struct device_node *node)
 {
-	const char *isa, *status;
+	const char *isa;
 	u32 hart;
 
 	if (!of_device_is_compatible(node, "riscv")) {
@@ -39,12 +39,8 @@ int riscv_of_processor_hartid(struct device_node *node)
 		return -ENODEV;
 	}
 
-	if (of_property_read_string(node, "status", &status)) {
-		pr_warn("CPU with hartid=%d has no \"status\" property\n", hart);
-		return -ENODEV;
-	}
-	if (strcmp(status, "okay")) {
-		pr_info("CPU with hartid=%d has a non-okay status of \"%s\"\n", hart, status);
+	if (!of_device_is_available(node)) {
+		pr_info("CPU with hartid=%d is not available\n", hart);
 		return -ENODEV;
 	}
 
-- 
2.20.1