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Merge 4.19.161 into android-4.19-stable

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Changes in 4.19.161
	perf event: Check ref_reloc_sym before using it
	netfilter: clear skb->next in NF_HOOK_LIST()
	btrfs: don't access possibly stale fs_info data for printing duplicate device
	btrfs: fix lockdep splat when reading qgroup config on mount
	wireless: Use linux/stddef.h instead of stddef.h
	KVM: arm64: vgic-v3: Drop the reporting of GICR_TYPER.Last for userspace
	KVM: x86: handle !lapic_in_kernel case in kvm_cpu_*_extint
	KVM: x86: Fix split-irqchip vs interrupt injection window request
	arm64: pgtable: Fix pte_accessible()
	arm64: pgtable: Ensure dirty bit is preserved across pte_wrprotect()
	drm/atomic_helper: Stop modesets on unregistered connectors harder
	ALSA: hda/hdmi: fix incorrect locking in hdmi_pcm_close
	HID: cypress: Support Varmilo Keyboards' media hotkeys
	HID: add support for Sega Saturn
	Input: i8042 - allow insmod to succeed on devices without an i8042 controller
	HID: hid-sensor-hub: Fix issue with devices with no report ID
	HID: add HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE for Gamevice devices
	dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant
	x86/xen: don't unbind uninitialized lock_kicker_irq
	HID: Add Logitech Dinovo Edge battery quirk
	proc: don't allow async path resolution of /proc/self components
	nvme: free sq/cq dbbuf pointers when dbbuf set fails
	dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size
	scsi: libiscsi: Fix NOP race condition
	scsi: target: iscsi: Fix cmd abort fabric stop race
	perf/x86: fix sysfs type mismatches
	xtensa: uaccess: Add missing __user to strncpy_from_user() prototype
	phy: tegra: xusb: Fix dangling pointer on probe failure
	batman-adv: set .owner to THIS_MODULE
	ARM: dts: dra76x: m_can: fix order of clocks
	scsi: ufs: Fix race between shutdown and runtime resume flow
	bnxt_en: fix error return code in bnxt_init_one()
	bnxt_en: fix error return code in bnxt_init_board()
	video: hyperv_fb: Fix the cache type when mapping the VRAM
	bnxt_en: Release PCI regions when DMA mask setup fails during probe.
	cxgb4: fix the panic caused by non smac rewrite
	s390/qeth: fix tear down of async TX buffers
	IB/mthca: fix return value of error branch in mthca_init_cq()
	nfc: s3fwrn5: use signed integer for parsing GPIO numbers
	net: ena: set initial DMA width to avoid intel iommu issue
	ibmvnic: fix NULL pointer dereference in reset_sub_crq_queues
	ibmvnic: fix NULL pointer dereference in ibmvic_reset_crq
	optee: add writeback to valid memory type
	efivarfs: revert "fix memory leak in efivarfs_create()"
	can: gs_usb: fix endianess problem with candleLight firmware
	platform/x86: thinkpad_acpi: Send tablet mode switch at wakeup time
	platform/x86: toshiba_acpi: Fix the wrong variable assignment
	can: m_can: fix nominal bitiming tseg2 min for version >= 3.1
	perf probe: Fix to die_entrypc() returns error correctly
	USB: core: Change %pK for __user pointers to %px
	usb: gadget: f_midi: Fix memleak in f_midi_alloc
	USB: quirks: Add USB_QUIRK_DISCONNECT_SUSPEND quirk for Lenovo A630Z TIO built-in usb-audio card
	usb: gadget: Fix memleak in gadgetfs_fill_super
	x86/speculation: Fix prctl() when spectre_v2_user={seccomp,prctl},ibpb
	x86/resctrl: Remove superfluous kernfs_get() calls to prevent refcount leak
	x86/resctrl: Add necessary kernfs_put() calls to prevent refcount leak
	USB: core: Fix regression in Hercules audio card
	Linux 4.19.161

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ib704b9ff60755978b272aa358d25ddb217cc37bc
This commit is contained in:
Greg Kroah-Hartman
2020-12-02 09:19:05 +01:00
parent 442c302e2e daefdc9eb2
commit 08bed51f55
63 changed files with 533 additions and 324 deletions
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71
include/drm/drm_connector.h
View File

@@ -82,6 +82,53 @@ enum drm_connector_status {
connector_status_unknown = 3,
};
/**
* enum drm_connector_registration_status - userspace registration status for
* a &drm_connector
*
* This enum is used to track the status of initializing a connector and
* registering it with userspace, so that DRM can prevent bogus modesets on
* connectors that no longer exist.
*/
enum drm_connector_registration_state {
/**
* @DRM_CONNECTOR_INITIALIZING: The connector has just been created,
* but has yet to be exposed to userspace. There should be no
* additional restrictions to how the state of this connector may be
* modified.
*/
DRM_CONNECTOR_INITIALIZING = 0,
/**
* @DRM_CONNECTOR_REGISTERED: The connector has been fully initialized
* and registered with sysfs, as such it has been exposed to
* userspace. There should be no additional restrictions to how the
* state of this connector may be modified.
*/
DRM_CONNECTOR_REGISTERED = 1,
/**
* @DRM_CONNECTOR_UNREGISTERED: The connector has either been exposed
* to userspace and has since been unregistered and removed from
* userspace, or the connector was unregistered before it had a chance
* to be exposed to userspace (e.g. still in the
* @DRM_CONNECTOR_INITIALIZING state). When a connector is
* unregistered, there are additional restrictions to how its state
* may be modified:
*
* - An unregistered connector may only have its DPMS changed from
* On->Off. Once DPMS is changed to Off, it may not be switched back
* to On.
* - Modesets are not allowed on unregistered connectors, unless they
* would result in disabling its assigned CRTCs. This means
* disabling a CRTC on an unregistered connector is OK, but enabling
* one is not.
* - Removing a CRTC from an unregistered connector is OK, but new
* CRTCs may never be assigned to an unregistered connector.
*/
DRM_CONNECTOR_UNREGISTERED = 2,
};
enum subpixel_order {
SubPixelUnknown = 0,
SubPixelHorizontalRGB,
@@ -894,10 +941,12 @@ struct drm_connector {
bool ycbcr_420_allowed;
/**
* @registered: Is this connector exposed (registered) with userspace?
* @registration_state: Is this connector initializing, exposed
* (registered) with userspace, or unregistered?
*
* Protected by @mutex.
*/
bool registered;
enum drm_connector_registration_state registration_state;
/**
* @modes:
@@ -1276,6 +1325,24 @@ static inline void drm_connector_unreference(struct drm_connector *connector)
drm_connector_put(connector);
}
/**
* drm_connector_is_unregistered - has the connector been unregistered from
* userspace?
* @connector: DRM connector
*
* Checks whether or not @connector has been unregistered from userspace.
*
* Returns:
* True if the connector was unregistered, false if the connector is
* registered or has not yet been registered with userspace.
*/
static inline bool
drm_connector_is_unregistered(struct drm_connector *connector)
{
return READ_ONCE(connector->registration_state) ==
DRM_CONNECTOR_UNREGISTERED;
}
const char *drm_get_connector_status_name(enum drm_connector_status status);
const char *drm_get_subpixel_order_name(enum subpixel_order order);
const char *drm_get_dpms_name(int val);