f7a3bf6547
* Thu Aug 13 2020 Fedora Kernel Team <kernel-team@fedoraproject.org> [5.9.0-0.rc0.20200813gitdc06fe51d26e.1]
- dc06fe51d26e rebase
- More mismatches ("Justin M. Forbes")
- Fedora config change due to deps ("Justin M. Forbes")
- CONFIG_SND_SOC_MAX98390 is now selected by SND_SOC_INTEL_DA7219_MAX98357A_GENERIC ("Justin M. Forbes")
- Config change required for build part 2 ("Justin M. Forbes")
- Config change required for build ("Justin M. Forbes")
- Fedora config update ("Justin M. Forbes")
- Revert "Merge branch 'make_configs_fix' into 'os-build'" (Justin Forbes)
- redhat/configs/process_configs.sh: Remove *.config.orig files (Prarit Bhargava)
- redhat/configs/process_configs.sh: Add process_configs_known_broken flag (Prarit Bhargava)
- redhat/Makefile: Fix '*-configs' targets (Prarit Bhargava)
- Updated changelog for the release based on v5.8 (Fedora Kernel Team)
- Add ability to sync upstream through Makefile (Don Zickus)
- Add master merge check (Don Zickus)
- Replace hardcoded values 'os-build' and project id with variables (Don Zickus)
- gitattributes: Remove unnecesary export restrictions (Prarit Bhargava)
- redhat/Makefile.common: Fix MARKER (Prarit Bhargava)
Resolves: rhbz#
Signed-off-by: Justin M. Forbes <jforbes@fedoraproject.org>
53 lines
2.0 KiB
Diff
53 lines
2.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Mark Salter <msalter@redhat.com>
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Date: Thu, 10 May 2018 17:38:44 -0400
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Subject: [PATCH] aarch64: acpi scan: Fix regression related to X-Gene UARTs
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Message-id: <20180510173844.29580-4-msalter@redhat.com>
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Patchwork-id: 214381
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O-Subject: [RHEL-8 BZ1519554 3/3] aarch64: acpi scan: Fix regression related to X-Gene UARTs
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Bugzilla: 1519554
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RH-Acked-by: Al Stone <astone@redhat.com>
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RH-Acked-by: Tony Camuso <tcamuso@redhat.com>
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1519554
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Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=16144520
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Commit e361d1f85855 ("ACPI / scan: Fix enumeration for special UART
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devices") caused a regression with some X-Gene based platforms (Mustang
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and M400) with invalid DSDT. The DSDT makes it appear that the UART
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device is also a slave device attached to itself. With the above commit
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the UART won't be enumerated by ACPI scan (slave serial devices shouldn't
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be). So check for X-Gene UART device and skip slace device check on it.
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Upstream Status: RHEL only
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Signed-off-by: Mark Salter <msalter@redhat.com>
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Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
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---
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drivers/acpi/scan.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
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index 2142f1554761..f5fdf6f3650c 100644
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--- a/drivers/acpi/scan.c
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+++ b/drivers/acpi/scan.c
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@@ -1574,6 +1574,15 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
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if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids))
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return false;
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+ /*
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+ * Firmware on some arm64 X-Gene platforms will make the UART
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+ * device appear as both a UART and a slave of that UART. Just
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+ * bail out here for X-Gene UARTs.
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+ */
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+ if (IS_ENABLED(CONFIG_ARM64) &&
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+ !strcmp(acpi_device_hid(device), "APMC0D08"))
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+ return false;
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+
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INIT_LIST_HEAD(&resource_list);
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acpi_dev_get_resources(device, &resource_list,
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acpi_check_serial_bus_slave,
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--
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2.26.2
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