On Fri, Jun 11, 2021 at 06:10:39PM +0100, Andre Przywara wrote:
> With -Wsign-compare, compilers warn about a mismatching signedness in
> comparisons in various parts in checks.c.
>
> Fix those by making all affected variables unsigned. This covers return
> values of the (unsigned) size_t type, phandles, variables holding sizes
> in general and loop counters only ever counting positives values.
>
> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
> ---
> checks.c | 21 +++++++++++----------
> 1 file changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/checks.c b/checks.c
> index 67647fa..e8bfe4a 100644
> --- a/checks.c
> +++ b/checks.c
> @@ -312,7 +312,7 @@ ERROR(duplicate_property_names, check_duplicate_property_names, NULL);
> static void check_node_name_chars(struct check *c, struct dt_info *dti,
> struct node *node)
> {
> - int n = strspn(node->name, c->data);
> + size_t n = strspn(node->name, c->data);
>
> if (n < strlen(node->name))
> FAIL(c, dti, node, "Bad character '%c' in node name",
> @@ -386,7 +386,7 @@ static void check_property_name_chars(struct check *c, struct dt_info *dti,
> struct property *prop;
>
> for_each_property(node, prop) {
> - int n = strspn(prop->name, c->data);
> + size_t n = strspn(prop->name, c->data);
>
> if (n < strlen(prop->name))
> FAIL_PROP(c, dti, node, prop, "Bad character '%c' in property name",
> @@ -403,7 +403,7 @@ static void check_property_name_chars_strict(struct check *c,
>
> for_each_property(node, prop) {
> const char *name = prop->name;
> - int n = strspn(name, c->data);
> + size_t n = strspn(name, c->data);
>
> if (n == strlen(prop->name))
> continue;
> @@ -579,7 +579,7 @@ static void check_name_properties(struct check *c, struct dt_info *dti,
> if (!prop)
> return; /* No name property, that's fine */
>
> - if ((prop->val.len != node->basenamelen+1)
> + if ((prop->val.len != node->basenamelen + 1U)
> || (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
> FAIL(c, dti, node, "\"name\" property is incorrect (\"%s\" instead"
> " of base node name)", prop->val.val);
> @@ -1388,7 +1388,7 @@ static void check_property_phandle_args(struct check *c,
> const struct provider *provider)
> {
> struct node *root = dti->dt;
> - int cell, cellsize = 0;
> + unsigned int cell, cellsize = 0;
>
> if (!is_multiple_of(prop->val.len, sizeof(cell_t))) {
> FAIL_PROP(c, dti, node, prop,
> @@ -1596,7 +1596,8 @@ static void check_interrupts_property(struct check *c,
> struct node *root = dti->dt;
> struct node *irq_node = NULL, *parent = node;
> struct property *irq_prop, *prop = NULL;
> - int irq_cells, phandle;
> + int irq_cells;
> + cell_t phandle;
The compiler doesn't complain about it, but irq_cells should logically
be a cell_t as well, might as well fix that at the same time.
>
> irq_prop = get_property(node, "interrupts");
> if (!irq_prop)
> @@ -1762,7 +1763,7 @@ WARNING(graph_port, check_graph_port, NULL, &graph_nodes);
> static struct node *get_remote_endpoint(struct check *c, struct dt_info *dti,
> struct node *endpoint)
> {
> - int phandle;
> + cell_t phandle;
> struct node *node;
> struct property *prop;
>
> @@ -1910,7 +1911,7 @@ static void enable_warning_error(struct check *c, bool warn, bool error)
>
> static void disable_warning_error(struct check *c, bool warn, bool error)
> {
> - int i;
> + unsigned int i;
>
> /* Lowering level, also lower it for things this is the prereq
> * for */
> @@ -1931,7 +1932,7 @@ static void disable_warning_error(struct check *c, bool warn, bool error)
>
> void parse_checks_option(bool warn, bool error, const char *arg)
> {
> - int i;
> + unsigned int i;
> const char *name = arg;
> bool enable = true;
>
> @@ -1958,7 +1959,7 @@ void parse_checks_option(bool warn, bool error, const char *arg)
>
> void process_checks(bool force, struct dt_info *dti)
> {
> - int i;
> + unsigned int i;
> int error = 0;
>
> for (i = 0; i < ARRAY_SIZE(check_table); i++) {
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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