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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2023-01-24 21:12:49 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2023-01-24 21:12:49 +0100
commit8ef0ca4a177d2dbe6680fb4388173897900a4ed1 (patch)
treec67b1e358f50bce724b61b43be885f90a229fad1 /drivers/acpi/acpi_video.c
parent763bd29fd3d1742153f6c6847ca3b3560e7ca957 (diff)
parenta2c81dc59d41e92362ab7d41d0c15471ea50637d (diff)
Merge back other thermal control material for 6.3.
* thermal: (734 commits) thermal: core: call put_device() only after device_register() fails Linux 6.2-rc4 kbuild: Fix CFI hash randomization with KASAN firmware: coreboot: Check size of table entry and use flex-array kallsyms: Fix scheduling with interrupts disabled in self-test ata: pata_cs5535: Don't build on UML lockref: stop doing cpu_relax in the cmpxchg loop x86/pci: Treat EfiMemoryMappedIO as reservation of ECAM space efi: tpm: Avoid READ_ONCE() for accessing the event log io_uring: lock overflowing for IOPOLL ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF iommu/mediatek-v1: Fix an error handling path in mtk_iommu_v1_probe() iommu/iova: Fix alloc iova overflows issue iommu: Fix refcount leak in iommu_device_claim_dma_owner iommu/arm-smmu-v3: Don't unregister on shutdown iommu/arm-smmu: Don't unregister on shutdown iommu/arm-smmu: Report IOMMU_CAP_CACHE_COHERENCY even betterer platform/x86: thinkpad_acpi: Fix profile mode display in AMT mode ALSA: usb-audio: Fix possible NULL pointer dereference in snd_usb_pcm_has_fixed_rate() platform/x86: int3472/discrete: Ensure the clk/power enable pins are in output mode ...
Diffstat (limited to 'drivers/acpi/acpi_video.c')
-rw-r--r--drivers/acpi/acpi_video.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 30d8fd03fec7..97b711e57bff 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -70,11 +70,7 @@ module_param(device_id_scheme, bool, 0444);
static int only_lcd = -1;
module_param(only_lcd, int, 0444);
-/*
- * Display probing is known to take up to 5 seconds, so delay the fallback
- * backlight registration by 5 seconds + 3 seconds for some extra margin.
- */
-static int register_backlight_delay = 8;
+static int register_backlight_delay;
module_param(register_backlight_delay, int, 0444);
MODULE_PARM_DESC(register_backlight_delay,
"Delay in seconds before doing fallback (non GPU driver triggered) "
@@ -2176,6 +2172,17 @@ static bool should_check_lcd_flag(void)
return false;
}
+/*
+ * At least one graphics driver has reported that no LCD is connected
+ * via the native interface. cancel the registration for fallback acpi_video0.
+ * If another driver still deems this necessary, it can explicitly register it.
+ */
+void acpi_video_report_nolcd(void)
+{
+ cancel_delayed_work(&video_bus_register_backlight_work);
+}
+EXPORT_SYMBOL(acpi_video_report_nolcd);
+
int acpi_video_register(void)
{
int ret = 0;