linux-kernel - [PATCH] cxl/region: fix format string for resource_size

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Message-Id: <20251204095237.1032528-1-arnd@kernel.org>
Date: Thu,  4 Dec 2025 10:52:26 +0100
From: Arnd Bergmann <arnd@...nel.org>
To: Davidlohr Bueso <dave@...olabs.net>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Alison Schofield <alison.schofield@...el.com>,
	Vishal Verma <vishal.l.verma@...el.com>,
	Ira Weiny <ira.weiny@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	Ben Cheatham <benjamin.cheatham@....com>
Cc: Arnd Bergmann <arnd@...db.de>,
	Gregory Price <gourry@...rry.net>,
	Robert Richter <rrichter@....com>,
	Li Ming <ming.li@...omail.com>,
	linux-cxl@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] cxl/region: fix format string for resource_size_t

From: Arnd Bergmann <arnd@...db.de>

The size of this type is architecture specific, and the recommended
way to print it portably is through the custom %pap format string.

Fixes: d6602e25819d ("cxl/region: Add support to indicate region has extended linear cache")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/cxl/core/region.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
index ae899f68551f..fc36a5413d3f 100644
--- a/drivers/cxl/core/region.c
+++ b/drivers/cxl/core/region.c
@@ -759,7 +759,7 @@ static ssize_t extended_linear_cache_size_show(struct device *dev,
 	ACQUIRE(rwsem_read_intr, rwsem)(&cxl_rwsem.region);
 	if ((rc = ACQUIRE_ERR(rwsem_read_intr, &rwsem)))
 		return rc;
-	return sysfs_emit(buf, "%#llx\n", p->cache_size);
+	return sysfs_emit(buf, "%pap\n", &p->cache_size);
 }
 static DEVICE_ATTR_RO(extended_linear_cache_size);
 
-- 
2.39.5