[PATCH 03/13] firewire: core: add test to detect irm-ignores-bus-manager quirk in config ROM parser

[Takashi Sakamoto]

Some Canon DV cameras have a quirk where they malfunction as non-root
nodes by ignoring the bus manager. This quirk was supported by commit
6044565af458e ("firewire: core: fix unstable I/O with Canon camcorder")
and refactored by commit 5a43dc9f4ee0 ("firewire: core: detect device
quirk when reading configuration ROM").

Add a KUnit test to verify that the configuration ROM parser detects the
quirk correctly. The configuration ROM content is retrieved from the
following discussion:
https://bugzilla.redhat.com/show_bug.cgi?id=633260

Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
 drivers/firewire/config-rom-parser-test.c | 46 +++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/drivers/firewire/config-rom-parser-test.c b/drivers/firewire/config-rom-parser-test.c
index 131c7aa3b224..11c01ef9efd9 100644
--- a/drivers/firewire/config-rom-parser-test.c
+++ b/drivers/firewire/config-rom-parser-test.c
@@ -45,6 +45,41 @@ static const u32 sony_dcr_trv310k_config_rom[] = {
 	0x00000000,
 };
 
+static const u32 canon_mv5i_mc_config_rom[] = {
+	0x0404e552,
+	0x31333934,
+	0xe0648100,
+	0x00008500,
+	0x005eb597,
+	0x0007cdd0,
+	0x03000085,
+	0x8100000d,
+	0x17000002,
+	0x81000010,
+	0x0c0083c0,
+	0xd8000002,
+	0xd1000003,
+	0x0001ce96,
+	0xd1000001,
+	0x0004bbee,
+	0x1200a02d,
+	0x13010001,
+	0x17000002,
+	0x81000006,
+	0x00046dc8,
+	0x00000000,
+	0x00000000,
+	0x43616e6f,
+	0x6e000000,
+	0x000621ee,
+	0x00000000,
+	0x00000000,
+	0x4d563569,
+	0x204d4300,
+	0x00000000,
+	0x00000000,
+};
+
 static const struct parser_test_case {
 	const char *name;
 	const u32 *quadlets;
@@ -67,6 +102,17 @@ static const struct parser_test_case {
 		.expected_cmc = true,
 		.expected_irmc = true,
 	},
+	{
+		.name = "detect_irm_ignores_bus_manager_quirk",
+		.quadlets = canon_mv5i_mc_config_rom,
+		.quadlet_length = ARRAY_SIZE(canon_mv5i_mc_config_rom),
+		.phy_speed_in_self_id = SCODE_100,
+		.expected_speed = SCODE_100,
+		.expected_quirk = FW_DEVICE_QUIRK_IRM_IGNORES_BUS_MANAGER,
+		.expected_max_rec = 8,
+		.expected_cmc = true,
+		.expected_irmc = true,
+	},
 };
 
 // Define parser_test_gen_params.
-- 
2.53.0