diff options
Diffstat (limited to 'ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch')
| -rw-r--r-- | ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch b/ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch deleted file mode 100644 index 3dcfd4969..000000000 --- a/ACPI-irq-Workaround-firmware-issue-on-X-Gene-based-m400.patch +++ /dev/null @@ -1,64 +0,0 @@ -From dbdda4277cf0422a9ccb7ea98d0263c3cdbecdf6 Mon Sep 17 00:00:00 2001 -From: Mark Salter <msalter@redhat.com> -Date: Tue, 8 May 2018 21:54:39 -0400 -Subject: [PATCH] ACPI / irq: Workaround firmware issue on X-Gene based - m400 - -The ACPI firmware on the xgene-based m400 platorms erroneously -describes its UART interrupt as ACPI_PRODUCER rather than -ACPI_CONSUMER. This leads to the UART driver being unable to -find its interrupt and the kernel unable find a console. -Work around this by avoiding the producer/consumer check -for X-Gene UARTs. - -Signed-off-by: Mark Salter <msalter@redhat.com> ---- - drivers/acpi/irq.c | 17 +++++++++++++++-- - 1 file changed, 15 insertions(+), 2 deletions(-) - -diff --git a/drivers/acpi/irq.c b/drivers/acpi/irq.c -index 7c352cba0528..028c1a564cff 100644 ---- a/drivers/acpi/irq.c -+++ b/drivers/acpi/irq.c -@@ -129,6 +129,7 @@ struct acpi_irq_parse_one_ctx { - unsigned int index; - unsigned long *res_flags; - struct irq_fwspec *fwspec; -+ bool skip_producer_check; - }; - - /** -@@ -200,7 +201,8 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, - return AE_CTRL_TERMINATE; - case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: - eirq = &ares->data.extended_irq; -- if (eirq->producer_consumer == ACPI_PRODUCER) -+ if (!ctx->skip_producer_check && -+ eirq->producer_consumer == ACPI_PRODUCER) - return AE_OK; - if (ctx->index >= eirq->interrupt_count) { - ctx->index -= eirq->interrupt_count; -@@ -235,8 +237,19 @@ static acpi_status acpi_irq_parse_one_cb(struct acpi_resource *ares, - static int acpi_irq_parse_one(acpi_handle handle, unsigned int index, - struct irq_fwspec *fwspec, unsigned long *flags) - { -- struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec }; -+ struct acpi_irq_parse_one_ctx ctx = { -EINVAL, index, flags, fwspec, false }; - -+ /* -+ * Firmware on arm64-based HPE m400 platform incorrectly marks -+ * its UART interrupt as ACPI_PRODUCER rather than ACPI_CONSUMER. -+ * Don't do the producer/consumer check for that device. -+ */ -+ if (IS_ENABLED(CONFIG_ARM64)) { -+ struct acpi_device *adev = acpi_bus_get_acpi_device(handle); -+ -+ if (adev && !strcmp(acpi_device_hid(adev), "APMC0D08")) -+ ctx.skip_producer_check = true; -+ } - acpi_walk_resources(handle, METHOD_NAME__CRS, acpi_irq_parse_one_cb, &ctx); - return ctx.rc; - } --- -2.17.0 - |