From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Hans de Goede <hdegoede@redhat.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Wolfram Sang <wsa@kernel.org>, Sasha Levin <sashal@kernel.org>,
linux-i2c@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 8/9] i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices()
Date: Mon, 21 Sep 2020 10:41:13 -0400 [thread overview]
Message-ID: <20200921144114.2135773-8-sashal@kernel.org> (raw)
In-Reply-To: <20200921144114.2135773-1-sashal@kernel.org>
From: Hans de Goede <hdegoede@redhat.com>
[ Upstream commit 21653a4181ff292480599dad996a2b759ccf050f ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i2c/i2c-core-base.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index f225bef1e043c..41dd0a08a625c 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -1292,8 +1292,8 @@ 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);
--
2.25.1
next prev parent reply other threads:[~2020-09-21 14:42 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-21 14:41 [PATCH AUTOSEL 4.19 1/9] ASoC: wm8994: Skip setting of the WM8994_MICBIAS register for WM1811 Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 2/9] ASoC: wm8994: Ensure the device is resumed in wm89xx_mic_detect functions Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 3/9] ASoC: Intel: bytcr_rt5640: Add quirk for MPMAN Converter9 2-in-1 Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 4/9] RISC-V: Take text_mutex in ftrace_init_nop() Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 5/9] s390/init: add missing __init annotations Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 6/9] lockdep: fix order in trace_hardirqs_off_caller() Sasha Levin
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 7/9] drm/amdkfd: fix a memory leak issue Sasha Levin
2020-09-21 14:41 ` Sasha Levin [this message]
2020-09-21 14:41 ` [PATCH AUTOSEL 4.19 9/9] objtool: Fix noreturn detection for ignored functions Sasha Levin
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