MFC r281169, r293724, r293796, r294029, r294041, r294058

MFC r281169 (by andrew):
Make global variabled only used in this file static

MFC r294058:
Make common boot file_loadraw name parameter const

MFC r294041:
Remove unused reg param from fdt_fixup_memory

MFC r293724:
Enable warnings in EFI boot code

MFC r293796:
Fix typo in libefi.c

MFC r294029:
Only build EFI components on supported compilers

Sponsored by:	Multiplay

1 files changed, 2 insertions, 6 deletions

diff --git a/sys/boot/common/misc.c b/sys/boot/common/misc.c
index c4c36ea..228dfaf 100644
--- a/sys/boot/common/misc.c
+++ b/sys/boot/common/misc.c
@@ -118,14 +118,12 @@ kern_bzero(vm_offset_t dest, size_t len)
 int
 kern_pread(int fd, vm_offset_t dest, size_t len, off_t off)
 {
-	ssize_t nread;
 
 	if (lseek(fd, off, SEEK_SET) == -1) {
 		printf("\nlseek failed\n");
 		return (-1);
 	}
-	nread = archsw.arch_readin(fd, dest, len);
-	if (nread != len) {
+	if ((size_t)archsw.arch_readin(fd, dest, len) != len) {
 		printf("\nreadin failed\n");
 		return (-1);
 	}
@@ -140,7 +138,6 @@ void *
 alloc_pread(int fd, off_t off, size_t len)
 {
 	void *buf;
-	ssize_t nread;
 
 	buf = malloc(len);
 	if (buf == NULL) {
@@ -152,8 +149,7 @@ alloc_pread(int fd, off_t off, size_t len)
 		free(buf);
 		return (NULL);
 	}
-	nread = read(fd, buf, len);
-	if (nread != len) {
+	if ((size_t)read(fd, buf, len) != len) {
 		printf("\nread failed\n");
 		free(buf);
 		return (NULL);