linux-kernel - [PATCH] spi: loopback-test: fix up const pointer issue in rx_ranges

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Message-ID: <2025052213-semifinal-sublevel-d631@gregkh>
Date: Thu, 22 May 2025 12:59:14 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-spi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mark Brown <broonie@...nel.org>
Subject: [PATCH] spi: loopback-test: fix up const pointer issue in rx_ranges_cmp()

When a list head is a const pointer, the list entry for that head also
must remain a const pointer, otherwise we are just "throwing it away"
for no good reason.  Fix this up by properly marking these structures as
const.

Cc: Mark Brown <broonie@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/spi/spi-loopback-test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-loopback-test.c b/drivers/spi/spi-loopback-test.c
index 31a878d9458d..0389fce5b1f2 100644
--- a/drivers/spi/spi-loopback-test.c
+++ b/drivers/spi/spi-loopback-test.c
@@ -494,8 +494,8 @@ struct rx_ranges {
 static int rx_ranges_cmp(void *priv, const struct list_head *a,
 			 const struct list_head *b)
 {
-	struct rx_ranges *rx_a = list_entry(a, struct rx_ranges, list);
-	struct rx_ranges *rx_b = list_entry(b, struct rx_ranges, list);
+	const struct rx_ranges *rx_a = list_entry(a, struct rx_ranges, list);
+	const struct rx_ranges *rx_b = list_entry(b, struct rx_ranges, list);
 
 	if (rx_a->start > rx_b->start)
 		return 1;
-- 
2.49.0