[PATCH 7/8] dtoc: Detect drivers which do not parse correctly
Simon Glass
sjg at chromium.org
Sun Jul 4 20:19:49 CEST 2021
At present if a driver is missing a uclass or compatible stirng, this
is silently ignored. This makes sense in most cases, particularly for
the compatible string, since it is not required except when the driver
is used with of-platdata.
But it is also not very helpful. When there is some sort of problem
with a driver, the missing compatible string (for example) may be the
cause.
Add a warning in this case, showing it only for drivers which are used
by the build.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
tools/dtoc/src_scan.py | 7 ++++++-
tools/dtoc/test_src_scan.py | 38 +++++++++++++++++++++++++++++++++++++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/tools/dtoc/src_scan.py b/tools/dtoc/src_scan.py
index 847677757d9..3bef59d616e 100644
--- a/tools/dtoc/src_scan.py
+++ b/tools/dtoc/src_scan.py
@@ -546,7 +546,12 @@ class Scanner:
# The driver does not have a uclass or compat string.
# The first is required but the second is not, so just
# ignore this.
- pass
+ if not driver.uclass_id:
+ warn = 'Missing .uclass'
+ else:
+ warn = 'Missing .compatible'
+ self._warnings[driver.name].add('%s in %s' %
+ (warn, fname))
driver = None
ids_name = None
compat = None
diff --git a/tools/dtoc/test_src_scan.py b/tools/dtoc/test_src_scan.py
index 62500e80fe7..f03cf8ed7c7 100644
--- a/tools/dtoc/test_src_scan.py
+++ b/tools/dtoc/test_src_scan.py
@@ -581,3 +581,41 @@ rockchip_rk3288_grf: WARNING: the driver rockchip_rk3288_grf was not found in th
''',
stdout.getvalue())
self.assertIn('tegra_i2c_ids', stdout.getvalue())
+
+ def scan_uclass_warning(self):
+ """Test a missing .uclass in the driver"""
+ buff = '''
+static const struct udevice_id tegra_i2c_ids[] = {
+ { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
+ { }
+};
+
+U_BOOT_DRIVER(i2c_tegra) = {
+ .name = "i2c_tegra",
+ .of_match = tegra_i2c_ids,
+};
+'''
+ scan = src_scan.Scanner(None, None)
+ scan._parse_driver('file.c', buff)
+ self.assertEqual(
+ {'i2c_tegra': {'Missing .uclass in file.c'}},
+ scan._warnings)
+
+ def scan_compat_warning(self):
+ """Test a missing .compatible in the driver"""
+ buff = '''
+static const struct udevice_id tegra_i2c_ids[] = {
+ { .compatible = "nvidia,tegra114-i2c", .data = TYPE_114 },
+ { }
+};
+
+U_BOOT_DRIVER(i2c_tegra) = {
+ .name = "i2c_tegra",
+ .id = UCLASS_I2C,
+};
+'''
+ scan = src_scan.Scanner(None, None)
+ scan._parse_driver('file.c', buff)
+ self.assertEqual(
+ {'i2c_tegra': {'Missing .compatible in file.c'}},
+ scan._warnings)
--
2.32.0.93.g670b81a890-goog
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