freebsd-skq/sys
Andriy Gapon f470cbb2d6 acpi_video: try our best to work on systems without non-essential methods
Only _BCL and _BCM methods seem to be essential to the driver's
operation.  If _BQC is missing then we can assume that the current
brightness is whatever we set by the last _BCM invocation.  If _DCS or
_DGS is missing the we can make assumptions as well.

The change is based on a patch suggested by Anthony Jenkins
<Scoobi_doo@yahoo.com> in PR 207086.

PR:		207086
Submitted by:	Anthony Jenkins <Scoobi_doo@yahoo.com (earlier version)
Reviewed by:	manu
MFC after:	3 weeks
Differential Revision: https://reviews.freebsd.org/D24653
2020-05-05 12:14:11 +00:00
..
amd64 Initial support for bhyve save and restore. 2020-05-05 00:02:04 +00:00
arm Convert arm's physmem interface to MI code 2020-04-19 00:12:30 +00:00
arm64 Export tracing facility of GIC500 ITS block. 2020-04-29 14:31:25 +00:00
bsm bsm: add AUE_CLOSERANGE 2020-04-24 01:27:25 +00:00
cam Add session locking in cfiscsi_ioctl_handoff(). 2020-05-03 16:14:55 +00:00
cddl Avoid the GEOM topology lock recursion when we automatically expand a pool. 2020-04-25 21:45:31 +00:00
compat Optimise use of sg_page_count() in __sg_page_iter_next() in the LinuxKPI. 2020-05-04 10:10:07 +00:00
conf Initial support for bhyve save and restore. 2020-05-05 00:02:04 +00:00
contrib MFV: r360512 2020-05-01 01:26:36 +00:00
crypto ccp: add a new hardware ID, found on AMD Ryzen 3 3200U 2020-04-24 10:20:54 +00:00
ddb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
dev acpi_video: try our best to work on systems without non-essential methods 2020-05-05 12:14:11 +00:00
dts allwinner: aw_thermal: Cope with DTS changes 2020-04-14 19:05:17 +00:00
fs Revert r360514, to avoid unnecessary churn of the sources. 2020-05-05 00:58:03 +00:00
gdb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
geom Add g_topology_locked() macro that returns true if we already hold the GEOM 2020-04-25 21:41:09 +00:00
gnu dts: Import DTS from Linux 5.6 2020-04-14 18:57:00 +00:00
i386 Remove an obsolete TODO comment from several minidump implementations. 2020-04-24 18:47:42 +00:00
isa sc(4) md bits: stop setting sc->kbd entirely 2019-12-30 02:07:55 +00:00
kern Step 4.2: start divorce of M_EXT and M_EXTPG 2020-05-03 00:37:16 +00:00
kgssapi Remove support for Kernel GSS algorithms deprecated in r348875. 2020-04-10 23:08:41 +00:00
libkern Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
mips Fix a race in pmap_emulate_modified(). 2020-04-24 21:21:49 +00:00
modules Initial support for bhyve save and restore. 2020-05-05 00:02:04 +00:00
net Switch DDB show route to direct rnh_matchaddr() call instead of rtalloc1(). 2020-05-04 15:07:57 +00:00
net80211 Don't indirect user pointers directly in two 802.11s ioctls. 2020-04-24 22:10:02 +00:00
netgraph Add le_read_buffer_size command and manpage. 2020-04-28 16:00:34 +00:00
netinet Add net epoch support back, which was taken out by accident in 2020-05-04 23:05:11 +00:00
netinet6 Remove now-unused rt_ifp,rt_ifa,rt_gateway,rt_mtu rte fields. 2020-05-04 14:31:45 +00:00
netipsec Don't pass bogus keys down for NULL algorithms. 2020-05-02 01:00:29 +00:00
netpfil pf: Improve DIOCADDRULE validation 2020-05-03 16:09:35 +00:00
netsmb Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
nfs Remove rtable dumping code from bootp. 2020-04-28 07:23:41 +00:00
nfsclient
nfsserver
nlm Make nfslockd depend on xdr. 2020-04-23 09:37:22 +00:00
ofed Convert OFED rtable interactions to the new routing KPI. 2020-04-15 13:06:55 +00:00
opencrypto Use a lookup table of algorithm types for alg_is_* helpers. 2020-05-04 22:31:38 +00:00
powerpc Remove an obsolete TODO comment from several minidump implementations. 2020-04-24 18:47:42 +00:00
riscv Use the HSM SBI extension to halt CPUs 2020-05-01 21:59:47 +00:00
rpc Split XDR into separate kernel module. Make krpc depend on xdr. 2020-04-17 06:04:20 +00:00
security audit_canon_path_vp: don't panic if cdir == NULL 2020-04-17 02:09:31 +00:00
sys Step 4.2: start divorce of M_EXT and M_EXTPG 2020-05-03 00:37:16 +00:00
teken
tests Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
tools vfs: stop null checking routines in vop wrappers 2020-01-26 00:41:38 +00:00
ufs Retire two unused background fsck sysctls. 2020-04-21 17:42:32 +00:00
vm Re-check for wirings after busying the page in vm_page_release_locked(). 2020-04-28 13:51:41 +00:00
x86 Fix handling of NMIs from unknown sources (BMC, hypervisor) 2020-04-26 00:41:29 +00:00
xdr Split XDR into separate kernel module. Make krpc depend on xdr. 2020-04-17 06:04:20 +00:00
xen Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (16 of many) 2020-02-25 19:04:39 +00:00
Makefile Remove sparc64 kernel support 2020-02-03 17:35:11 +00:00