linux-kernel - [PATCH] of: Make explicit cpu_to_be32 conversion to mute sparse warning

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Date: Mon,  5 Feb 2024 10:40:33 +0800
From: Dawei Li <dawei.li@...ngroup.cn>
To: robh+dt@...nel.org,
	frowand.list@...il.com,
	lkp@...el.com
Cc: stephen.boyd@...aro.org,
	oe-kbuild-all@...ts.linux.dev,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Dawei Li <dawei.li@...ngroup.cn>
Subject: [PATCH] of: Make explicit cpu_to_be32 conversion to mute sparse warning

Kernel test robot reports sparse warning:
sparse warnings: (new ones prefixed by >>)
>> drivers/of/base.c:1337:73: sparse: sparse: incorrect type in initializer
   (different base types) @@  expected restricted __be32 @@  got int @@
   drivers/of/base.c:1337:73: sparse:     expected restricted __be32
   drivers/of/base.c:1337:73: sparse:     got int

Thus, Make explicit conversions to mute warning(Although BE and LE are
exactly same in binary representation for 0/~0).

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402042134.GEb3Bgwl-lkp@intel.com/
Signed-off-by: Dawei Li <dawei.li@...ngroup.cn>
---
 drivers/of/base.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index b0ad8fc06e80..f71cda9ac09d 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1345,8 +1345,8 @@ int of_parse_phandle_with_args_map(const struct device_node *np,
 	char *pass_name = NULL;
 	struct device_node *cur, *new = NULL;
 	const __be32 *map, *mask, *pass;
-	static const __be32 dummy_mask[] = { [0 ... MAX_PHANDLE_ARGS] = ~0 };
-	static const __be32 dummy_pass[] = { [0 ... MAX_PHANDLE_ARGS] = 0 };
+	static const __be32 dummy_mask[] = { [0 ... MAX_PHANDLE_ARGS] = cpu_to_be32(~0) };
+	static const __be32 dummy_pass[] = { [0 ... MAX_PHANDLE_ARGS] = cpu_to_be32(0) };
 	__be32 initial_match_array[MAX_PHANDLE_ARGS];
 	const __be32 *match_array = initial_match_array;
 	int i, ret, map_len, match;
-- 
2.27.0