For some reason setting max_register was missed from regmap_config. Without this cat /sys/kernel/debug/regmap/sdw:0:217:2010:0:1/range actually throws below Warning.
WARNING: CPU: 7 PID: 540 at drivers/base/regmap/regmap-debugfs.c:160 regmap_debugfs_get_dump_start.part.10+0x1e0/0x220 ... Call trace: regmap_debugfs_get_dump_start.part.10+0x1e0/0x220 regmap_reg_ranges_read_file+0xc0/0x2e0 full_proxy_read+0x64/0x98 vfs_read+0xa8/0x1e0 ksys_read+0x6c/0x100 __arm64_sys_read+0x1c/0x28 el0_svc_common.constprop.3+0x6c/0x190 do_el0_svc+0x24/0x90 el0_svc+0x14/0x20 el0_sync_handler+0x90/0xb8 el0_sync+0x158/0x180 ...
Fixes: a0aab9e1404a ("ASoC: codecs: add wsa881x amplifier support") Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/codecs/wsa881x.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c index 4530b74f5921..db87e07b11c9 100644 --- a/sound/soc/codecs/wsa881x.c +++ b/sound/soc/codecs/wsa881x.c @@ -640,6 +640,7 @@ static struct regmap_config wsa881x_regmap_config = { .val_bits = 8, .cache_type = REGCACHE_RBTREE, .reg_defaults = wsa881x_defaults, + .max_register = WSA881X_SPKR_STATUS3, .num_reg_defaults = ARRAY_SIZE(wsa881x_defaults), .volatile_reg = wsa881x_volatile_register, .readable_reg = wsa881x_readable_register,