LineageOS/android_external_dtc
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Fix assorted sparse warnings

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This fixes a great many sparse warnings on the fdt and libfdt sources.
These are mostly due to incorrect mixing of endian annotated and native
integer types.

This includes fixing a couple of quasi-bugs where we had endian conversions
the wrong way around (this will have the right effect in practice, but is
certainly conceptually incorrect).

This doesn't make the whole tree sparse clean: there are many warnings in
bison and lex generated code, and there are a handful of other remaining
warnings that are (for now) more trouble than they're worth to fix (and
are not genuine bugs).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson
2017-03-06 12:08:53 +11:00
parent 672ac09ea0
commit bad5b28049
25 changed files with 71 additions and 67 deletions
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23
flattree.c
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@@ -179,7 +179,7 @@ static void asm_emit_data(void *e, struct data d)
emit_offset_label(f, m->ref, m->offset);
while ((d.len - off) >= sizeof(uint32_t)) {
asm_emit_cell(e, fdt32_to_cpu(*((uint32_t *)(d.val+off))));
asm_emit_cell(e, fdt32_to_cpu(*((fdt32_t *)(d.val+off))));
off += sizeof(uint32_t);
}
@@ -608,7 +608,7 @@ static void flat_read_chunk(struct inbuf *inb, void *p, int len)
static uint32_t flat_read_word(struct inbuf *inb)
{
uint32_t val;
fdt32_t val;
assert(((inb->ptr - inb->base) % sizeof(val)) == 0);
@@ -717,13 +717,15 @@ static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
* First pass, count entries.
*/
while (1) {
uint64_t address, size;
flat_read_chunk(inb, &re, sizeof(re));
re.address = fdt64_to_cpu(re.address);
re.size = fdt64_to_cpu(re.size);
if (re.size == 0)
address = fdt64_to_cpu(re.address);
size = fdt64_to_cpu(re.size);
if (size == 0)
break;
new = build_reserve_entry(re.address, re.size);
new = build_reserve_entry(address, size);
reservelist = add_reserve_entry(reservelist, new);
}
@@ -816,6 +818,7 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
struct dt_info *dt_from_blob(const char *fname)
{
FILE *f;
fdt32_t magic_buf, totalsize_buf;
uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
uint32_t off_dt, off_str, off_mem_rsvmap;
int rc;
@@ -832,7 +835,7 @@ struct dt_info *dt_from_blob(const char *fname)
f = srcfile_relative_open(fname, NULL);
rc = fread(&magic, sizeof(magic), 1, f);
rc = fread(&magic_buf, sizeof(magic_buf), 1, f);
if (ferror(f))
die("Error reading DT blob magic number: %s\n",
strerror(errno));
@@ -843,11 +846,11 @@ struct dt_info *dt_from_blob(const char *fname)
die("Mysterious short read reading magic number\n");
}
magic = fdt32_to_cpu(magic);
magic = fdt32_to_cpu(magic_buf);
if (magic != FDT_MAGIC)
die("Blob has incorrect magic number\n");
rc = fread(&totalsize, sizeof(totalsize), 1, f);
rc = fread(&totalsize_buf, sizeof(totalsize_buf), 1, f);
if (ferror(f))
die("Error reading DT blob size: %s\n", strerror(errno));
if (rc < 1) {
@@ -857,7 +860,7 @@ struct dt_info *dt_from_blob(const char *fname)
die("Mysterious short read reading blob size\n");
}
totalsize = fdt32_to_cpu(totalsize);
totalsize = fdt32_to_cpu(totalsize_buf);
if (totalsize < FDT_V1_SIZE)
die("DT blob size (%d) is too small\n", totalsize);