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checkpatch: Add warnings for unexpected struct names

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As a way of keeping the driver declarations more consistent, add a warning
if the struct used does not end with _priv or _plat.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-12-03 16:55:24 -07:00
parent 8a8d24bdf1
commit b7bbd553de
2 changed files with 66 additions and 0 deletions
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38
scripts/checkpatch.pl
View file

@ -2320,6 +2320,23 @@ sub get_raw_comment {
return $comment;
}
# Args:
# line: Patch line to check
# auto: Auto variable name, e.g. "per_child_auto"
# suffix: Suffix to expect on member, e.g. "_priv"
# warning: Warning name, e.g. "PRIV_AUTO"
sub u_boot_struct_name {
my ($line, $auto, $suffix, $warning) = @_;
# Use _priv as a suffix for the device-private data struct
if ($line =~ /^\+\s*\.${auto}\s*=\s*sizeof\(struct\((\w+)\).*/) {
my $struct_name = $1;
if ($struct_name !~ /^\w+${suffix}/) {
WARN($warning, "struct \'$struct_name\' should have a ${suffix} suffix");
}
}
}
# Checks specific to U-Boot
sub u_boot_line {
my ($realfile, $line, $rawline, $herecurr) = @_;
@ -2371,6 +2388,27 @@ sub u_boot_line {
ERROR("CONFIG_IS_ENABLED_CONFIG",
"CONFIG_IS_ENABLED() takes values without the CONFIG_ prefix\n" . $herecurr);
}
# Use _priv as a suffix for the device-private data struct
if ($line =~ /^\+\s*\.priv_auto\s*=\s*sizeof\(struct\((\w+)\).*/) {
my $struct_name = $1;
if ($struct_name !~ /^\w+_priv/) {
WARN("PRIV_AUTO", "struct \'$struct_name\' should have a _priv suffix");
}
}
# Check struct names for the 'auto' members of struct driver
u_boot_struct_name($line, "priv_auto", "_priv", "PRIV_AUTO");
u_boot_struct_name($line, "plat_auto", "_plat", "PLAT_AUTO");
u_boot_struct_name($line, "per_child_auto", "_priv", "CHILD_PRIV_AUTO");
u_boot_struct_name($line, "per_child_plat_auto", "_plat",
"CHILD_PLAT_AUTO");
# Now the ones for struct uclass, skipping those in common with above
u_boot_struct_name($line, "per_device_auto", "_priv",
"DEVICE_PRIV_AUTO");
u_boot_struct_name($line, "per_device_plat_auto", "_plat",
"DEVICE_PLAT_AUTO");
}
sub process {

28
tools/patman/test_checkpatch.py
View file

@ -411,6 +411,34 @@ index 0000000..2234c87
pm.add_line('common/main.c', 'if (CONFIG_IS_ENABLED(CONFIG_CLK))')
self.checkSingleMessage(pm, 'CONFIG_IS_ENABLED_CONFIG', 'error')
def check_struct(self, auto, suffix, warning):
"""Check one of the warnings for struct naming
Args:
auto: Auto variable name, e.g. 'per_child_auto'
suffix: Suffix to expect on member, e.g. '_priv'
warning: Warning name, e.g. 'PRIV_AUTO'
"""
pm = PatchMaker()
pm.add_line('common/main.c', '.%s = sizeof(struct(fred)),' % auto)
pm.add_line('common/main.c', '.%s = sizeof(struct(mary%s)),' %
(auto, suffix))
self.checkSingleMessage(
pm, warning, "struct 'fred' should have a %s suffix" % suffix)
def testDmDriverAuto(self):
"""Check for the correct suffix on 'struct driver' auto members"""
self.check_struct('priv_auto', '_priv', 'PRIV_AUTO')
self.check_struct('plat_auto', '_plat', 'PLAT_AUTO')
self.check_struct('per_child_auto', '_priv', 'CHILD_PRIV_AUTO')
self.check_struct('per_child_plat_auto', '_plat', 'CHILD_PLAT_AUTO')
def testDmUclassAuto(self):
"""Check for the correct suffix on 'struct uclass' auto members"""
# Some of these are omitted since they match those from struct driver
self.check_struct('per_device_auto', '_priv', 'DEVICE_PRIV_AUTO')
self.check_struct('per_device_plat_auto', '_plat', 'DEVICE_PLAT_AUTO')
if __name__ == "__main__":
unittest.main()