From: Hans de Goede <hdegoede@redhat.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>,
Mark Gross <markgross@kernel.org>,
Andy Shevchenko <andy@kernel.org>, Wolfram Sang <wsa@kernel.org>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Rob Herring <robh@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org,
linux-i2c@vger.kernel.org, Stephan Gerhold <stephan@gerhold.net>,
linux-serial@vger.kernel.org
Subject: [PATCH 09/12] platform/x86: x86-android-tablets: Add support for preloading modules
Date: Thu, 30 Dec 2021 00:14:28 +0100 [thread overview]
Message-ID: <20211229231431.437982-10-hdegoede@redhat.com> (raw)
In-Reply-To: <20211229231431.437982-1-hdegoede@redhat.com>
Since the x86-android-tablets code does all it work from module_init() it
cannot use -EPROBE_DEFER to wait for e.g. interrupt providing GPIO-chips
or PMIC-cells to show up.
To make sure things will still work when some necessary resource providers
are build as module allow the per board info to specify a list of modules
to pre-load before instantiating the I2C clients.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/platform/x86/x86-android-tablets.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/platform/x86/x86-android-tablets.c b/drivers/platform/x86/x86-android-tablets.c
index 0b521e4671aa..3c01c8607c26 100644
--- a/drivers/platform/x86/x86-android-tablets.c
+++ b/drivers/platform/x86/x86-android-tablets.c
@@ -142,6 +142,7 @@ struct x86_serdev_info {
};
struct x86_dev_info {
+ const char * const *modules;
struct gpiod_lookup_table **gpiod_lookup_tables;
const struct x86_i2c_client_info *i2c_client_info;
const struct platform_device_info *pdev_info;
@@ -428,6 +429,13 @@ static __init int x86_android_tablet_init(void)
dev_info = id->driver_data;
+ /*
+ * Since this runs from module_init() it cannot use -EPROBE_DEFER,
+ * instead pre-load any modules which are listed as requirements.
+ */
+ for (i = 0; dev_info->modules && dev_info->modules[i]; i++)
+ request_module(dev_info->modules[i]);
+
gpiod_lookup_tables = dev_info->gpiod_lookup_tables;
for (i = 0; gpiod_lookup_tables && gpiod_lookup_tables[i]; i++)
gpiod_add_lookup_table(gpiod_lookup_tables[i]);
--
2.33.1
next prev parent reply other threads:[~2021-12-29 23:15 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-29 23:14 [PATCH 00/12] ACPI / pdx86: Add support for x86 Android tablets with broken DSDTs Hans de Goede
2021-12-29 23:14 ` [PATCH 01/12] ACPI / x86: Add acpi_quirk_skip_[i2c_client|serdev]_enumeration() helpers Hans de Goede
2021-12-29 23:14 ` [PATCH 02/12] i2c: acpi: Do not instantiate I2C-clients on boards with known bogus DSDT entries Hans de Goede
2021-12-30 12:03 ` Mika Westerberg
2021-12-30 12:21 ` Wolfram Sang
2021-12-30 12:34 ` Hans de Goede
2021-12-29 23:14 ` [PATCH 03/12] serdev: Do not instantiate serdevs " Hans de Goede
2021-12-30 12:44 ` Greg Kroah-Hartman
2021-12-29 23:14 ` [PATCH 04/12] platform/x86: x86-android-tablets: Don't return -EPROBE_DEFER from a non probe() function Hans de Goede
2021-12-29 23:14 ` [PATCH 05/12] platform/x86: x86-android-tablets: Add support for PMIC interrupts Hans de Goede
2021-12-29 23:14 ` [PATCH 06/12] platform/x86: x86-android-tablets: Add support for instantiating platform-devs Hans de Goede
2021-12-29 23:14 ` [PATCH 07/12] platform/x86: x86-android-tablets: Add support for instantiating serdevs Hans de Goede
2021-12-29 23:14 ` [PATCH 08/12] platform/x86: x86-android-tablets: Add support for registering GPIO lookup tables Hans de Goede
2021-12-29 23:14 ` Hans de Goede [this message]
2021-12-29 23:14 ` [PATCH 10/12] platform/x86: x86-android-tablets: Add Asus TF103C data Hans de Goede
2021-12-29 23:14 ` [PATCH 11/12] platform/x86: x86-android-tablets: Add Asus MeMO Pad 7 ME176C data Hans de Goede
2021-12-29 23:14 ` [PATCH 12/12] platform/x86: x86-android-tablets: Add TM800A550L data Hans de Goede
2021-12-30 11:57 ` [PATCH 00/12] ACPI / pdx86: Add support for x86 Android tablets with broken DSDTs Wolfram Sang
2022-01-03 11:42 ` Hans de Goede
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