mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
eabd5e7d8b
Commitc032ace71c("software node: add basic tests for property entries") introduced a global-out-of-bounds error because it forgot to add a terminator of "nodes "for software_node_register_nodes() to process. # Subtest: property-entry 1..7 ok 1 - pe_test_uints ok 2 - pe_test_uint_arrays ok 3 - pe_test_strings ok 4 - pe_test_bool ok 5 - pe_test_move_inline_u8 ok 6 - pe_test_move_inline_str ================================================================== BUG: KASAN: global-out-of-bounds in software_node_register_nodes+0x41/0x80 Read of size 8 at addr ffffffff989ef250 by task kunit_try_catch/316 CPU: 17 PID: 316 Comm: kunit_try_catch Not tainted 5.5.0-rc4-next-20200106+ #1 Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40 03/09/2018 Call Trace: dump_stack+0xa0/0xea print_address_description.constprop.5.cold.7+0x64/0x384 __kasan_report.cold.8+0x7a/0xc0 kasan_report+0x12/0x20 __asan_load8+0x71/0xa0 software_node_register_nodes+0x41/0x80 pe_test_reference+0x1eb/0x1200 kunit_try_run_case+0x6b/0xd1 kunit_generic_run_threadfn_adapter+0x29/0x50 kthread+0x1e6/0x210 ret_from_fork+0x27/0x50 The buggy address belongs to the variable: nodes.21544+0x30/0x920 Memory state around the buggy address: ffffffff989ef100: fa fa fa fa 00 04 fa fa fa fa fa fa 00 00 00 00 ffffffff989ef180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffff989ef200: fa fa fa fa 00 00 00 00 00 00 fa fa fa fa fa fa ^ ffffffff989ef280: 00 06 fa fa fa fa fa fa 00 00 04 fa fa fa fa fa ffffffff989ef300: 00 00 fa fa fa fa fa fa 00 05 fa fa fa fa fa fa ================================================================== Disabling lock debugging due to kernel taint ok 7 - pe_test_reference ok 8 - property-entry Fixes:c032ace71c("software node: add basic tests for property entries") Signed-off-by: Qian Cai <cai@lca.pw> Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
476 lines
14 KiB
C
476 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Unit tests for property entries API
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//
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// Copyright 2019 Google LLC.
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#include <kunit/test.h>
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#include <linux/property.h>
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#include <linux/types.h>
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static void pe_test_uints(struct kunit *test)
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{
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static const struct property_entry entries[] = {
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PROPERTY_ENTRY_U8("prop-u8", 8),
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PROPERTY_ENTRY_U16("prop-u16", 16),
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PROPERTY_ENTRY_U32("prop-u32", 32),
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PROPERTY_ENTRY_U64("prop-u64", 64),
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{ }
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};
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struct fwnode_handle *node;
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u8 val_u8, array_u8[2];
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u16 val_u16, array_u16[2];
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u32 val_u32, array_u32[2];
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u64 val_u64, array_u64[2];
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int error;
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node = fwnode_create_software_node(entries, NULL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u8, 8);
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error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u8[0], 8);
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error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u16, 16);
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error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u16[0], 16);
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error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u32, 32);
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error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u32[0], 32);
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error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u64, 64);
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error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u64[0], 64);
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error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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fwnode_remove_software_node(node);
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}
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static void pe_test_uint_arrays(struct kunit *test)
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{
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static const u8 a_u8[16] = { 8, 9 };
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static const u16 a_u16[16] = { 16, 17 };
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static const u32 a_u32[16] = { 32, 33 };
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static const u64 a_u64[16] = { 64, 65 };
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static const struct property_entry entries[] = {
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PROPERTY_ENTRY_U8_ARRAY("prop-u8", a_u8),
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PROPERTY_ENTRY_U16_ARRAY("prop-u16", a_u16),
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PROPERTY_ENTRY_U32_ARRAY("prop-u32", a_u32),
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PROPERTY_ENTRY_U64_ARRAY("prop-u64", a_u64),
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{ }
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};
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struct fwnode_handle *node;
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u8 val_u8, array_u8[32];
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u16 val_u16, array_u16[32];
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u32 val_u32, array_u32[32];
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u64 val_u64, array_u64[32];
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int error;
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node = fwnode_create_software_node(entries, NULL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u8, 8);
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error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u8[0], 8);
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error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u8[0], 8);
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KUNIT_EXPECT_EQ(test, (int)array_u8[1], 9);
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error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 17);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u16, 16);
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error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u16[0], 16);
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error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u16[0], 16);
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KUNIT_EXPECT_EQ(test, (int)array_u16[1], 17);
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error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 17);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u32, 32);
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error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u32[0], 32);
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error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u32[0], 32);
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KUNIT_EXPECT_EQ(test, (int)array_u32[1], 33);
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error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 17);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)val_u64, 64);
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error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u64[0], 64);
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error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_EQ(test, (int)array_u64[0], 64);
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KUNIT_EXPECT_EQ(test, (int)array_u64[1], 65);
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error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 17);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
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KUNIT_EXPECT_NE(test, error, 0);
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fwnode_remove_software_node(node);
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}
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static void pe_test_strings(struct kunit *test)
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{
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static const char *strings[] = {
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"string-a",
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"string-b",
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};
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static const struct property_entry entries[] = {
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PROPERTY_ENTRY_STRING("str", "single"),
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PROPERTY_ENTRY_STRING("empty", ""),
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PROPERTY_ENTRY_STRING_ARRAY("strs", strings),
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{ }
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};
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struct fwnode_handle *node;
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const char *str;
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const char *strs[10];
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int error;
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node = fwnode_create_software_node(entries, NULL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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error = fwnode_property_read_string(node, "str", &str);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_STREQ(test, str, "single");
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error = fwnode_property_read_string_array(node, "str", strs, 1);
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KUNIT_EXPECT_EQ(test, error, 1);
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KUNIT_EXPECT_STREQ(test, strs[0], "single");
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/* asking for more data returns what we have */
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error = fwnode_property_read_string_array(node, "str", strs, 2);
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KUNIT_EXPECT_EQ(test, error, 1);
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KUNIT_EXPECT_STREQ(test, strs[0], "single");
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error = fwnode_property_read_string(node, "no-str", &str);
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KUNIT_EXPECT_NE(test, error, 0);
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error = fwnode_property_read_string_array(node, "no-str", strs, 1);
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KUNIT_EXPECT_LT(test, error, 0);
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error = fwnode_property_read_string(node, "empty", &str);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_STREQ(test, str, "");
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error = fwnode_property_read_string_array(node, "strs", strs, 3);
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KUNIT_EXPECT_EQ(test, error, 2);
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KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
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KUNIT_EXPECT_STREQ(test, strs[1], "string-b");
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error = fwnode_property_read_string_array(node, "strs", strs, 1);
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KUNIT_EXPECT_EQ(test, error, 1);
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KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
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/* NULL argument -> returns size */
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error = fwnode_property_read_string_array(node, "strs", NULL, 0);
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KUNIT_EXPECT_EQ(test, error, 2);
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/* accessing array as single value */
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error = fwnode_property_read_string(node, "strs", &str);
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KUNIT_EXPECT_EQ(test, error, 0);
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KUNIT_EXPECT_STREQ(test, str, "string-a");
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fwnode_remove_software_node(node);
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}
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static void pe_test_bool(struct kunit *test)
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{
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static const struct property_entry entries[] = {
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PROPERTY_ENTRY_BOOL("prop"),
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{ }
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};
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struct fwnode_handle *node;
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node = fwnode_create_software_node(entries, NULL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
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KUNIT_EXPECT_TRUE(test, fwnode_property_read_bool(node, "prop"));
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KUNIT_EXPECT_FALSE(test, fwnode_property_read_bool(node, "not-prop"));
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fwnode_remove_software_node(node);
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}
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/* Verifies that small U8 array is stored inline when property is copied */
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static void pe_test_move_inline_u8(struct kunit *test)
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{
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static const u8 u8_array_small[8] = { 1, 2, 3, 4 };
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static const u8 u8_array_big[128] = { 5, 6, 7, 8 };
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static const struct property_entry entries[] = {
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PROPERTY_ENTRY_U8_ARRAY("small", u8_array_small),
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PROPERTY_ENTRY_U8_ARRAY("big", u8_array_big),
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{ }
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};
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struct property_entry *copy;
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const u8 *data_ptr;
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copy = property_entries_dup(entries);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
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KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
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data_ptr = (u8 *)©[0].value;
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KUNIT_EXPECT_EQ(test, (int)data_ptr[0], 1);
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KUNIT_EXPECT_EQ(test, (int)data_ptr[1], 2);
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KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
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data_ptr = copy[1].pointer;
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KUNIT_EXPECT_EQ(test, (int)data_ptr[0], 5);
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KUNIT_EXPECT_EQ(test, (int)data_ptr[1], 6);
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property_entries_free(copy);
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}
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/* Verifies that single string array is stored inline when property is copied */
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static void pe_test_move_inline_str(struct kunit *test)
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{
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static char *str_array_small[] = { "a" };
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static char *str_array_big[] = { "b", "c", "d", "e" };
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static char *str_array_small_empty[] = { "" };
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static struct property_entry entries[] = {
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PROPERTY_ENTRY_STRING_ARRAY("small", str_array_small),
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PROPERTY_ENTRY_STRING_ARRAY("big", str_array_big),
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PROPERTY_ENTRY_STRING_ARRAY("small-empty", str_array_small_empty),
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{ }
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};
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struct property_entry *copy;
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const char * const *data_ptr;
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copy = property_entries_dup(entries);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
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KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
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KUNIT_EXPECT_STREQ(test, copy[0].value.str[0], "a");
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KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
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data_ptr = copy[1].pointer;
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KUNIT_EXPECT_STREQ(test, data_ptr[0], "b");
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KUNIT_EXPECT_STREQ(test, data_ptr[1], "c");
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KUNIT_EXPECT_TRUE(test, copy[2].is_inline);
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KUNIT_EXPECT_STREQ(test, copy[2].value.str[0], "");
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property_entries_free(copy);
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}
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/* Handling of reference properties */
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static void pe_test_reference(struct kunit *test)
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{
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static const struct software_node nodes[] = {
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{ .name = "1", },
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{ .name = "2", },
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{ }
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};
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static const struct software_node_ref_args refs[] = {
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{
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.node = &nodes[0],
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.nargs = 0,
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},
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{
|
|
.node = &nodes[1],
|
|
.nargs = 2,
|
|
.args = { 3, 4 },
|
|
},
|
|
};
|
|
|
|
const struct property_entry entries[] = {
|
|
PROPERTY_ENTRY_REF("ref-1", &nodes[0]),
|
|
PROPERTY_ENTRY_REF("ref-2", &nodes[1], 1, 2),
|
|
PROPERTY_ENTRY_REF_ARRAY("ref-3", refs),
|
|
{ }
|
|
};
|
|
|
|
struct fwnode_handle *node;
|
|
struct fwnode_reference_args ref;
|
|
int error;
|
|
|
|
error = software_node_register_nodes(nodes);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
|
|
node = fwnode_create_software_node(entries, NULL);
|
|
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
|
|
|
|
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
|
|
0, 0, &ref);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[0]);
|
|
KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
|
|
|
|
/* wrong index */
|
|
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
|
|
0, 1, &ref);
|
|
KUNIT_EXPECT_NE(test, error, 0);
|
|
|
|
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
|
|
1, 0, &ref);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
|
|
KUNIT_EXPECT_EQ(test, ref.nargs, 1U);
|
|
KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
|
|
|
|
/* asking for more args, padded with zero data */
|
|
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
|
|
3, 0, &ref);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
|
|
KUNIT_EXPECT_EQ(test, ref.nargs, 3U);
|
|
KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
|
|
KUNIT_EXPECT_EQ(test, ref.args[1], 2LLU);
|
|
KUNIT_EXPECT_EQ(test, ref.args[2], 0LLU);
|
|
|
|
/* wrong index */
|
|
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
|
|
2, 1, &ref);
|
|
KUNIT_EXPECT_NE(test, error, 0);
|
|
|
|
/* array of references */
|
|
error = fwnode_property_get_reference_args(node, "ref-3", NULL,
|
|
0, 0, &ref);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[0]);
|
|
KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
|
|
|
|
/* second reference in the array */
|
|
error = fwnode_property_get_reference_args(node, "ref-3", NULL,
|
|
2, 1, &ref);
|
|
KUNIT_ASSERT_EQ(test, error, 0);
|
|
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
|
|
KUNIT_EXPECT_EQ(test, ref.nargs, 2U);
|
|
KUNIT_EXPECT_EQ(test, ref.args[0], 3LLU);
|
|
KUNIT_EXPECT_EQ(test, ref.args[1], 4LLU);
|
|
|
|
/* wrong index */
|
|
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
|
|
0, 2, &ref);
|
|
KUNIT_EXPECT_NE(test, error, 0);
|
|
|
|
fwnode_remove_software_node(node);
|
|
software_node_unregister_nodes(nodes);
|
|
}
|
|
|
|
static struct kunit_case property_entry_test_cases[] = {
|
|
KUNIT_CASE(pe_test_uints),
|
|
KUNIT_CASE(pe_test_uint_arrays),
|
|
KUNIT_CASE(pe_test_strings),
|
|
KUNIT_CASE(pe_test_bool),
|
|
KUNIT_CASE(pe_test_move_inline_u8),
|
|
KUNIT_CASE(pe_test_move_inline_str),
|
|
KUNIT_CASE(pe_test_reference),
|
|
{ }
|
|
};
|
|
|
|
static struct kunit_suite property_entry_test_suite = {
|
|
.name = "property-entry",
|
|
.test_cases = property_entry_test_cases,
|
|
};
|
|
|
|
kunit_test_suite(property_entry_test_suite);
|