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authorHans de Goede <hdegoede@redhat.com>2020-09-09 12:32:33 +0200
committerWolfram Sang <wsa@kernel.org>2020-09-17 23:16:59 +0200
commit21653a4181ff292480599dad996a2b759ccf050f (patch)
tree3fc31a16118d847cf57548b9d81a24da35b32142 /drivers
parent811a6e18a8633ef66c6c9bad09f359dd9daa9ec1 (diff)
i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices()
Some ACPI i2c-devices _STA method (which is used to detect if the device is present) use autodetection code which probes which device is present over i2c. This requires the I2C ACPI OpRegion handler to be registered before we enumerate i2c-clients under the i2c-adapter. This fixes the i2c touchpad on the Lenovo ThinkBook 14-IIL and ThinkBook 15 IIL not getting an i2c-client instantiated and thus not working. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1842039 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/i2c/i2c-core-base.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index 5ec082e2039d..573b5da145d1 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -1464,8 +1464,8 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
/* create pre-declared device nodes */
of_i2c_register_devices(adap);
- i2c_acpi_register_devices(adap);
i2c_acpi_install_space_handler(adap);
+ i2c_acpi_register_devices(adap);
if (adap->nr < __i2c_first_dynamic_bus_num)
i2c_scan_static_board_info(adap);