Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

[mirror_ubuntu-bionic-kernel.git] / drivers / of / unittest.c

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 987a1530282ac6a930ddb2da2c46239d02d91def..0107fc68033501bd6002ab8fe35b200a2c9c32dd 100644 (file)
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -239,6 +239,63 @@ static void __init of_unittest_check_tree_linkage(void)
        pr_debug("allnodes list size (%i); sibling lists size (%i)\n", allnode_count, child_count);
 }
 
+static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
+                                         const char *expected)
+{
+       unsigned char buf[strlen(expected)+10];
+       int size, i;
+
+       /* Baseline; check conversion with a large size limit */
+       memset(buf, 0xff, sizeof(buf));
+       size = snprintf(buf, sizeof(buf) - 2, fmt, np);
+
+       /* use strcmp() instead of strncmp() here to be absolutely sure strings match */
+       unittest((strcmp(buf, expected) == 0) && (buf[size+1] == 0xff),
+               "sprintf failed; fmt='%s' expected='%s' rslt='%s'\n",
+               fmt, expected, buf);
+
+       /* Make sure length limits work */
+       size++;
+       for (i = 0; i < 2; i++, size--) {
+               /* Clear the buffer, and make sure it works correctly still */
+               memset(buf, 0xff, sizeof(buf));
+               snprintf(buf, size+1, fmt, np);
+               unittest(strncmp(buf, expected, size) == 0 && (buf[size+1] == 0xff),
+                       "snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n",
+                       size, fmt, expected, buf);
+       }
+}
+
+static void __init of_unittest_printf(void)
+{
+       struct device_node *np;
+       const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100";
+       char phandle_str[16] = "";
+
+       np = of_find_node_by_path(full_name);
+       if (!np) {
+               unittest(np, "testcase data missing\n");
+               return;
+       }
+
+       num_to_str(phandle_str, sizeof(phandle_str), np->phandle);
+
+       of_unittest_printf_one(np, "%pOF",  full_name);
+       of_unittest_printf_one(np, "%pOFf", full_name);
+       of_unittest_printf_one(np, "%pOFp", phandle_str);
+       of_unittest_printf_one(np, "%pOFP", "dev@100");
+       of_unittest_printf_one(np, "ABC %pOFP ABC", "ABC dev@100 ABC");
+       of_unittest_printf_one(np, "%10pOFP", "   dev@100");
+       of_unittest_printf_one(np, "%-10pOFP", "dev@100   ");
+       of_unittest_printf_one(of_root, "%pOFP", "/");
+       of_unittest_printf_one(np, "%pOFF", "----");
+       of_unittest_printf_one(np, "%pOFPF", "dev@100:----");
+       of_unittest_printf_one(np, "%pOFPFPc", "dev@100:----:dev@100:test-sub-device");
+       of_unittest_printf_one(np, "%pOFc", "test-sub-device");
+       of_unittest_printf_one(np, "%pOFC",
+                       "\"test-sub-device\",\"test-compat2\",\"test-compat3\"");
+}
+
 struct node_hash {
        struct hlist_node node;
        struct device_node *np;
@@ -2269,6 +2326,7 @@ static int __init of_unittest(void)
        of_unittest_find_node_by_name();
        of_unittest_dynamic();
        of_unittest_parse_phandle_with_args();
+       of_unittest_printf();
        of_unittest_property_string();
        of_unittest_property_copy();
        of_unittest_changeset();