diff options
Diffstat (limited to 'SOURCES/0001-aarch64-acpi-scan-Fix-regression-related-to-X-Gene-U.patch')
| -rw-r--r-- | SOURCES/0001-aarch64-acpi-scan-Fix-regression-related-to-X-Gene-U.patch | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/SOURCES/0001-aarch64-acpi-scan-Fix-regression-related-to-X-Gene-U.patch b/SOURCES/0001-aarch64-acpi-scan-Fix-regression-related-to-X-Gene-U.patch deleted file mode 100644 index def3fd5..0000000 --- a/SOURCES/0001-aarch64-acpi-scan-Fix-regression-related-to-X-Gene-U.patch +++ /dev/null @@ -1,52 +0,0 @@ -From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 -From: Mark Salter <msalter@redhat.com> -Date: Thu, 10 May 2018 17:38:44 -0400 -Subject: [PATCH] aarch64: acpi scan: Fix regression related to X-Gene UARTs - -Message-id: <20180510173844.29580-4-msalter@redhat.com> -Patchwork-id: 214381 -O-Subject: [RHEL-8 BZ1519554 3/3] aarch64: acpi scan: Fix regression related to X-Gene UARTs -Bugzilla: 1519554 -RH-Acked-by: Al Stone <astone@redhat.com> -RH-Acked-by: Tony Camuso <tcamuso@redhat.com> - -Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1519554 -Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=16144520 - -Commit e361d1f85855 ("ACPI / scan: Fix enumeration for special UART -devices") caused a regression with some X-Gene based platforms (Mustang -and M400) with invalid DSDT. The DSDT makes it appear that the UART -device is also a slave device attached to itself. With the above commit -the UART won't be enumerated by ACPI scan (slave serial devices shouldn't -be). So check for X-Gene UART device and skip slace device check on it. - -Upstream Status: RHEL only -Signed-off-by: Mark Salter <msalter@redhat.com> -Signed-off-by: Herton R. Krzesinski <herton@redhat.com> ---- - drivers/acpi/scan.c | 9 +++++++++ - 1 file changed, 9 insertions(+) - -diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c -index 2142f1554761..f5fdf6f3650c 100644 ---- a/drivers/acpi/scan.c -+++ b/drivers/acpi/scan.c -@@ -1574,6 +1574,15 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device) - if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids)) - return false; - -+ /* -+ * Firmware on some arm64 X-Gene platforms will make the UART -+ * device appear as both a UART and a slave of that UART. Just -+ * bail out here for X-Gene UARTs. -+ */ -+ if (IS_ENABLED(CONFIG_ARM64) && -+ !strcmp(acpi_device_hid(device), "APMC0D08")) -+ return false; -+ - INIT_LIST_HEAD(&resource_list); - acpi_dev_get_resources(device, &resource_list, - acpi_check_serial_bus_slave, --- -2.28.0 - |