linux-kernel - [PATCH] ARM: 6214/2: fix release_mem

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Message-ID: <20251216174715.57547-2-fourier.thomas@gmail.com>
Date: Tue, 16 Dec 2025 18:47:13 +0100
From: Thomas Fourier <fourier.thomas@...il.com>
To: 
Cc: Thomas Fourier <fourier.thomas@...il.com>,
	Andy Shevchenko <andy@...nel.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: 6214/2: fix release_mem_region() size

It seems like, after the request_mem_region(), the corresponding
release_mem_region() must take the same size. This was done
in charlcd_remove() but not in the error path in charlcd_probe().

Fixes: ce8962455e90 ("ARM: 6214/2: driver for the character LCD found in ARM refdesigns")
Signed-off-by: Thomas Fourier <fourier.thomas@...il.com>
---
 drivers/auxdisplay/arm-charlcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/auxdisplay/arm-charlcd.c b/drivers/auxdisplay/arm-charlcd.c
index a7eae99a48f7..4e22882f57c9 100644
--- a/drivers/auxdisplay/arm-charlcd.c
+++ b/drivers/auxdisplay/arm-charlcd.c
@@ -323,7 +323,7 @@ static int __init charlcd_probe(struct platform_device *pdev)
 out_no_irq:
 	iounmap(lcd->virtbase);
 out_no_memregion:
-	release_mem_region(lcd->phybase, SZ_4K);
+	release_mem_region(lcd->phybase, lcd->physize);
 out_no_resource:
 	kfree(lcd);
 	return ret;
-- 
2.43.0