Kbuild fixes for v6.5 (2nd)

- Clear errno before calling getline().
 
  - Fix a modpost warning for ARCH=alpha
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Merge tag 'kbuild-fixes-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Clear errno before calling getline()

 - Fix a modpost warning for ARCH=alpha

* tag 'kbuild-fixes-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  alpha: remove __init annotation from exported page_is_ram()
  scripts/kallsyms: Fix build failure by setting errno before calling getline()

arch/alpha/kernel/setup.c

@@ -385,8 +385,7 @@ setup_memory(void *kernel_end)
 #endif /* CONFIG_BLK_DEV_INITRD */
 }
 
-int __init
-page_is_ram(unsigned long pfn)
+int page_is_ram(unsigned long pfn)
 {
 	struct memclust_struct * cluster;
 	struct memdesc_struct * memdesc;

scripts/kallsyms.c

@@ -129,6 +129,7 @@ static struct sym_entry *read_symbol(FILE *in, char **buf, size_t *buf_len)
 	ssize_t readlen;
 	struct sym_entry *sym;
 
+	errno = 0;
 	readlen = getline(buf, buf_len, in);
 	if (readlen < 0) {
 		if (errno) {