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From: Josh Law <objecting@objecting.org>
To: Masami Hiramatsu <mhiramat@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
	Josh Law <objecting@objecting.org>
Subject: [PATCH v6 03/17] lib/bootconfig: narrow flag parameter type from uint32_t to uint16_t
Date: Sun, 15 Mar 2026 12:20:01 +0000	[thread overview]
Message-ID: <20260315122015.55965-4-objecting@objecting.org> (raw)
In-Reply-To: <20260315122015.55965-1-objecting@objecting.org>

The flag parameter in the node creation helpers only ever carries
XBC_KEY (0) or XBC_VALUE (0x8000), both of which fit in uint16_t.
Using uint16_t matches the width of xbc_node.data where the flag is
ultimately stored.

Signed-off-by: Josh Law <objecting@objecting.org>
---
 lib/bootconfig.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/bootconfig.c b/lib/bootconfig.c
index 80de9540245d..58d6ae297280 100644
--- a/lib/bootconfig.c
+++ b/lib/bootconfig.c
@@ -408,7 +408,7 @@ const char * __init xbc_node_find_next_key_value(struct xbc_node *root,
 
 /* XBC parse and tree build */
 
-static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag)
+static int __init xbc_init_node(struct xbc_node *node, char *data, uint16_t flag)
 {
 	unsigned long offset = data - xbc_data;
 
@@ -422,7 +422,7 @@ static int __init xbc_init_node(struct xbc_node *node, char *data, uint32_t flag
 	return 0;
 }
 
-static struct xbc_node * __init xbc_add_node(char *data, uint32_t flag)
+static struct xbc_node * __init xbc_add_node(char *data, uint16_t flag)
 {
 	struct xbc_node *node;
 
@@ -452,7 +452,7 @@ static inline __init struct xbc_node *xbc_last_child(struct xbc_node *node)
 	return node;
 }
 
-static struct xbc_node * __init __xbc_add_sibling(char *data, uint32_t flag, bool head)
+static struct xbc_node * __init __xbc_add_sibling(char *data, uint16_t flag, bool head)
 {
 	struct xbc_node *sib, *node = xbc_add_node(data, flag);
 
@@ -480,17 +480,17 @@ static struct xbc_node * __init __xbc_add_sibling(char *data, uint32_t flag, boo
 	return node;
 }
 
-static inline struct xbc_node * __init xbc_add_sibling(char *data, uint32_t flag)
+static inline struct xbc_node * __init xbc_add_sibling(char *data, uint16_t flag)
 {
 	return __xbc_add_sibling(data, flag, false);
 }
 
-static inline struct xbc_node * __init xbc_add_head_sibling(char *data, uint32_t flag)
+static inline struct xbc_node * __init xbc_add_head_sibling(char *data, uint16_t flag)
 {
 	return __xbc_add_sibling(data, flag, true);
 }
 
-static inline __init struct xbc_node *xbc_add_child(char *data, uint32_t flag)
+static inline __init struct xbc_node *xbc_add_child(char *data, uint16_t flag)
 {
 	struct xbc_node *node = xbc_add_sibling(data, flag);
 
-- 
2.34.1


  parent reply	other threads:[~2026-03-15 12:20 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-15 12:19 [PATCH v6 00/17] bootconfig: fixes, cleanups, and modernization Josh Law
2026-03-15 12:19 ` [PATCH v6 01/17] lib/bootconfig: add missing __init annotations to static helpers Josh Law
2026-03-17  7:33   ` Masami Hiramatsu
2026-03-15 12:20 ` [PATCH v6 02/17] lib/bootconfig: fix typos, kerneldoc, and inconsistent if/else bracing Josh Law
2026-03-15 12:20 ` Josh Law [this message]
2026-03-15 12:20 ` [PATCH v6 04/17] lib/bootconfig: fix off-by-one in xbc_verify_tree() next node check Josh Law
2026-03-15 12:20 ` [PATCH v6 05/17] lib/bootconfig: increment xbc_node_num after node init succeeds Josh Law
2026-03-15 12:20 ` [PATCH v6 06/17] lib/bootconfig: drop redundant memset of xbc_nodes Josh Law
2026-03-17 11:46   ` Markus Elfring
2026-03-15 12:20 ` [PATCH v6 07/17] bootconfig: constify xbc_calc_checksum() data parameter Josh Law
2026-03-15 12:20 ` [PATCH v6 08/17] lib/bootconfig: replace linux/kernel.h with specific includes Josh Law
2026-03-15 12:20 ` [PATCH v6 09/17] lib/bootconfig: validate child node index in xbc_verify_tree() Josh Law
2026-03-17 11:03   ` Markus Elfring
2026-03-17 15:10     ` Steven Rostedt
2026-03-18  7:30       ` [RFC] Coding style consequences for multi-line statements? Markus Elfring
2026-03-15 12:20 ` [PATCH v6 10/17] lib/bootconfig: check xbc_init_node() return in override path Josh Law
2026-03-15 12:20 ` [PATCH v6 11/17] tools/bootconfig: fix fd leak in load_xbc_file() on fstat failure Josh Law
2026-03-17  7:31   ` Masami Hiramatsu
2026-03-17  7:34     ` Josh Law
2026-03-15 12:20 ` [PATCH v6 12/17] lib/bootconfig: fix signed comparison in xbc_node_get_data() Josh Law
2026-03-16 23:57   ` Masami Hiramatsu
2026-03-15 12:20 ` [PATCH v6 13/17] lib/bootconfig: use size_t for strlen result in xbc_node_match_prefix() Josh Law
2026-03-15 12:20 ` [PATCH v6 14/17] lib/bootconfig: narrow offset type in xbc_init_node() Josh Law
2026-03-17  0:55   ` Masami Hiramatsu
2026-03-15 12:20 ` [PATCH v6 15/17] lib/bootconfig: use size_t for key length tracking in xbc_verify_tree() Josh Law
2026-03-15 12:20 ` [PATCH v6 16/17] lib/bootconfig: fix sign-compare in xbc_node_compose_key_after() Josh Law
2026-03-17  7:55   ` Masami Hiramatsu
2026-03-17 16:15     ` Steven Rostedt
2026-03-17 16:15       ` Josh Law
2026-03-17 17:35       ` Josh Law
2026-03-17 23:15       ` Masami Hiramatsu
2026-03-17 23:18         ` Josh Law
2026-03-15 12:20 ` [PATCH v6 17/17] lib/bootconfig: change xbc_node_index() return type to uint16_t Josh Law

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