Commit b3f6c73d authored by Fabio Estevam's avatar Fabio Estevam Committed by Lee Jones

mfd: da9052-core: Fix platform-device id collision

Allow multiple DA9052 regulators be registered by registering with

The subdevices are currently registered with PLATFORM_DEVID_NONE, which
will cause a name collision on the platform bus when multiple regulators
are registered:

[    0.128855] da9052-regulator da9052-regulator: invalid regulator ID specified
[    0.128973] da9052-regulator: probe of da9052-regulator failed with error -22
[    0.129148] ------------[ cut here ]------------
[    0.129200] WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x7c()
[    0.129233] sysfs: cannot create duplicate filename '/devices/platform/soc/60000000.aips/63fc8000.i2c/i2c-0/0-0048/da9052-regulator
[    0.132891] ------------[ cut here ]------------
[    0.132924] WARNING: CPU: 0 PID: 1 at lib/kobject.c:240 kobject_add_internal+0x24c/0x2cc()
[    0.132957] kobject_add_internal failed for da9052-regulator with -EEXIST, don't try to register things with the same name in the same directory.
[    0.137000] da9052 0-0048: mfd_add_devices failed: -17
[    0.138486] da9052: probe of 0-0048 failed with error -17

Based on the fix done by Johan Hovold at commit b6684228 ("mfd:
viperboard: Fix platform-device id collision").

Tested on a imx53-qsb board, where multiple DA9053 regulators can be
successfully probed.
Signed-off-by: default avatarFabio Estevam <>
Signed-off-by: default avatarLee Jones <>
parent b7392d22
......@@ -554,7 +554,8 @@ int da9052_device_init(struct da9052 *da9052, u8 chip_id)
return ret;
ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info,
ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL);
if (ret) {
dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret);
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