Hi Grant,
On Nov 15, 2013, at 7:46 PM, Grant Likely wrote:
> Adds a few simple test cases to ensure that addition, update and removal
> of device tree node properties works correctly.
>
> Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxx>
> Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
> Cc: David S. Miller <davem@xxxxxxxxxxxxx>
> Cc: Nathan Fontenot <nfont@xxxxxxxxxxxxxxxxxx>
> Cc: Pantelis Antoniou <panto@xxxxxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/of/selftest.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 62 insertions(+)
>
> diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
> index e21012bde639..cb8d3e722f76 100644
> --- a/drivers/of/selftest.c
> +++ b/drivers/of/selftest.c
> @@ -30,6 +30,67 @@ static struct selftest_results {
> } \
> }
>
> +static void __init of_selftest_dynamic(void)
> +{
> + struct device_node *np;
> + struct property *prop;
> +
> + np = of_find_node_by_path("/testcase-data");
> + if (!np) {
> + pr_err("missing testcase data\n");
> + return;
> + }
> +
> + /* Array of 4 properties for the purpose of testing */
> + prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
> + if (!prop) {
> + selftest(0, "kzalloc() failed\n");
> + return;
> + }
> +
> + /* Add a new property - should pass*/
> + prop->name = "new-property";
> + prop->value = "new-property-data";
> + prop->length = strlen(prop->value);
> + selftest(of_add_property(np, prop) == 0, "Adding a new property failed\n");
> +
> + /* Try to add an existing property - should fail */
> + prop++;
> + prop->name = "new-property";
> + prop->value = "new-property-data-should-fail";
> + prop->length = strlen(prop->value);
> + selftest(of_add_property(np, prop) != 0,
> + "Adding an existing property should have failed\n");
> +
> + /* Try to modify an existing property - should pass */
> + prop->value = "modify-property-data-should-pass";
> + prop->length = strlen(prop->value);
> + selftest(of_update_property(np, prop) == 0,
> + "Updating an existing property should have passed\n");
> +
> + /* Try to modify non-existent property - should pass*/
> + prop++;
> + prop->name = "modify-property";
> + prop->value = "modify-missing-property-data-should-pass";
> + prop->length = strlen(prop->value);
> + selftest(of_update_property(np, prop) == 0,
> + "Updating a missing property should have passed\n");
> +
> + /* Remove property - should pass */
> + selftest(of_remove_property(np, prop) == 0,
> + "Removing a property should have passed\n");
> +
> + /* Adding very large property - should pass */
> + prop++;
> + prop->name = "large-property-PAGE_SIZEx8";
> + prop->length = PAGE_SIZE * 8;
> + prop->value = kzalloc(prop->length, GFP_KERNEL);
> + selftest(prop->value != NULL, "Unable to allocate large buffer\n");
> + if (prop->value)
> + selftest(of_add_property(np, prop) == 0,
> + "Adding a large property should have passed\n");
> +}
> +
> static void __init of_selftest_parse_phandle_with_args(void)
> {
> struct device_node *np;
> @@ -312,6 +373,7 @@ static int __init of_selftest(void)
> of_node_put(np);
>
> pr_info("start of selftest - you will see error messages\n");
> + of_selftest_dynamic();
> of_selftest_parse_phandle_with_args();
> of_selftest_property_match_string();
> of_selftest_parse_interrupts();
> --
> 1.8.3.2
>
I like this. I'll add my overlay test cases somewhere around here.
I might need to introduce some new helper functions in order to generate
the overlay completely programmatically.
Regards
-- Pantelis
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