[xen staging] x86/boot: don't cast away const-ness

[patchbot@xxxxxxx]

commit 1e204d768b50f2be244a1deccd9de87ae006cbac
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Mon Sep 7 10:40:50 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Sep 7 10:40:50 2026 +0200

    x86/boot: don't cast away const-ness
    
    While the general C library strchr() has to do so, the early boot cmdline
    parsing has no such requirement.
    
    No functional change.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Roger Pau Monné <roger@xxxxxxxxxxxxxx>
---
 xen/arch/x86/boot/cmdline.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/boot/cmdline.c b/xen/arch/x86/boot/cmdline.c
index 196c580e91..cf9e32b6d9 100644
--- a/xen/arch/x86/boot/cmdline.c
+++ b/xen/arch/x86/boot/cmdline.c
@@ -77,12 +77,12 @@ static int strncmp(const char *cs, const char *ct, size_t 
count)
     return 0;
 }
 
-static char *strchr(const char *s, int c)
+static const char *strchr(const char *s, int c)
 {
     for ( ; *s != (char)c; ++s )
         if ( *s == '\0' )
             return NULL;
-    return (char *)s;
+    return s;
 }
 
 static size_t strspn(const char *s, const char *accept)
--
generated by git-patchbot for /home/xen/git/xen.git#staging