Unverified Commit a9e26169 authored by Guenter Roeck's avatar Guenter Roeck Committed by Mark Brown
Browse files

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: f033c26d ("regmap: Add maple tree based register cache")
Fixes: 2238959b ("regmap: Add some basic kunit tests")
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230720032848.1306349-1-linux@roeck-us.net


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent b460a522

drivers/base/regmap/regmap-kunit.c

+5 −0
Original line number Diff line number Diff line
@@ -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)