linux-kernel - [PATCH] bus: simple-pm-bus: Add CONFIG_ARM_AMBA for amba compatible of_device

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Message-ID: <20241014002129.3173-1-jszhang@kernel.org>
Date: Mon, 14 Oct 2024 08:21:29 +0800
From: Jisheng Zhang <jszhang@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] bus: simple-pm-bus: Add CONFIG_ARM_AMBA for amba compatible of_device_id

I'm trying to run linux on some platforms with small size memory, so
every byte matters. The of_device_id is 196 Bytes on 32bit platforms,
add CONFIG_ARM_AMBA macro around the amba bus' of_device_id so that it
is removed if amba bus isn't used.

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
---
 drivers/bus/simple-pm-bus.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bus/simple-pm-bus.c b/drivers/bus/simple-pm-bus.c
index 50870c827889..a760500b918a 100644
--- a/drivers/bus/simple-pm-bus.c
+++ b/drivers/bus/simple-pm-bus.c
@@ -121,7 +121,9 @@ static const struct of_device_id simple_pm_bus_of_match[] = {
 	{ .compatible = "simple-bus",	.data = ONLY_BUS },
 	{ .compatible = "simple-mfd",	.data = ONLY_BUS },
 	{ .compatible = "isa",		.data = ONLY_BUS },
+#ifdef CONFIG_ARM_AMBA
 	{ .compatible = "arm,amba-bus",	.data = ONLY_BUS },
+#endif /* CONFIG_ARM_AMBA */
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
-- 
2.45.2