regmap: Disable locking for RBTREE and MAPLE unit tests

REGCACHE_RBTREE and REGCACHE_MAPLE dynamically allocate memory
for regmap operations. This is incompatible with spinlock based locking
which is used for fast_io operations. Disable locking for the associated
unit tests to avoid lockdep splashes.

Fixes: f033c26de5a5 ("regmap: Add maple tree based register cache")
Fixes: 2238959b6ad2 ("regmap: Add some basic kunit tests")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230720032848.1306349-1-linux@roeck-us.net
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index 24257aa9004dbc3a1c629f94093b649c86dbe8b5..9ff3018a46aac8922285c9d8611178e459241ddb 100644 (file)
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -58,6 +58,9 @@ static struct regmap *gen_regmap(struct regmap_config *config,
        int i;
        struct reg_default *defaults;
 
+       config->disable_locking = config->cache_type == REGCACHE_RBTREE ||
+                                       config->cache_type == REGCACHE_MAPLE;
+
        buf = kmalloc(size, GFP_KERNEL);
        if (!buf)
                return ERR_PTR(-ENOMEM);
@@ -889,6 +892,8 @@ static struct regmap *gen_raw_regmap(struct regmap_config *config,
 
        config->cache_type = test_type->cache_type;
        config->val_format_endian = test_type->val_endian;
+       config->disable_locking = config->cache_type == REGCACHE_RBTREE ||
+                                       config->cache_type == REGCACHE_MAPLE;
 
        buf = kmalloc(size, GFP_KERNEL);
        if (!buf)