linux-kernel - [PATCH] MIPS: SGI-IP27: Free some unused memory

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Message-Id: <9bc24670be4b1386c9b5c60f158c6acd7b723e72.1650720222.git.christophe.jaillet@wanadoo.fr>
Date:   Sat, 23 Apr 2022 15:24:03 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-mips@...r.kernel.org
Subject: [PATCH] MIPS: SGI-IP27: Free some unused memory

platform_device_add_data() duplicates the memory it is passed. So we can
free some memory to save a few bytes that would remain unused otherwise.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 arch/mips/sgi-ip27/ip27-xtalk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/mips/sgi-ip27/ip27-xtalk.c b/arch/mips/sgi-ip27/ip27-xtalk.c
index 000ede156bdc..e762886d1dda 100644
--- a/arch/mips/sgi-ip27/ip27-xtalk.c
+++ b/arch/mips/sgi-ip27/ip27-xtalk.c
@@ -53,6 +53,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
 	}
 	platform_device_add_resources(pdev, &w1_res, 1);
 	platform_device_add_data(pdev, wd, sizeof(*wd));
+	/* platform_device_add_data() duplicates the data */
+	kfree(wd);
 	platform_device_add(pdev);
 
 	bd = kzalloc(sizeof(*bd), GFP_KERNEL);
@@ -83,6 +85,8 @@ static void bridge_platform_create(nasid_t nasid, int widget, int masterwid)
 	bd->io_offset	= offset;
 
 	platform_device_add_data(pdev, bd, sizeof(*bd));
+	/* platform_device_add_data() duplicates the data */
+	kfree(bd);
 	platform_device_add(pdev);
 	pr_info("xtalk:n%d/%x bridge widget\n", nasid, widget);
 	return;
-- 
2.32.0