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873bf31b2b
freebsd-dev/sys
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Ian Lepore 873bf31b2b Restore the ability for i2c slave devices to do IO from their probe method. 
r348164 added code to iicbus_request_bus/iicbus_release_bus to automatically
call device_busy()/device_unbusy() as part of aquiring exclusive use of the
bus (so modules can't be unloaded while the bus is exclusively owned and/or
IO is in progress).  That broke the ability to do i2c IO from a slave device
probe method, because the slave isn't attached yet, so calling device_busy()
triggers a sanity-check panic for trying to busy a non-attached device.

Now we check whether the device status is < DS_ATTACHING, and if so we busy
the iicbus rather than the slave device.  I think this leaves a small window
where a module could be unloaded while probing is in progress.  But I think
that's true of all devices, and probably should be fixed by introducing a
DS_PROBING state for devices, and handling that at various points in the
newbus code.
2019-07-08 20:26:56 +00:00
..
amd64 Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
arm Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
arm64 Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
bsm
cam Remove the CDIOCREADSUBCHANNEL_SYSSPACE ioctl. 2019-07-03 00:10:01 +00:00
cddl Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
compat Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
conf Fix build error introduced by r349596. 2019-07-03 01:40:29 +00:00
contrib Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
crypto aesni(4): Fix trivial type typo 2019-05-27 00:47:51 +00:00
ddb ddb show proc typo 2019-06-22 05:35:23 +00:00
dev Restore the ability for i2c slave devices to do IO from their probe method. 2019-07-08 20:26:56 +00:00
dts arm64: Add support for NanoPI NEO2 2019-05-02 12:56:13 +00:00
fs Add additional check for 'blocks per group' and 'fragments per group' superblock fields. 2019-07-07 08:58:02 +00:00
gdb
geom g_mirror_taste: avoid deadlock, always clear tasting flag 2019-07-01 22:06:36 +00:00
gnu dts: Import files from Linux 5.1 2019-05-08 19:27:30 +00:00
i386 Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
isa
kern Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
kgssapi Make the warning intervals for deprecated crypto algorithms tunable. 2019-06-11 23:00:55 +00:00
libkern Separate kernel crc32() implementation to its own header (gsb_crc32.h) and 2019-06-17 19:49:08 +00:00
mips Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
modules Add driver for NTB in AMD SoC. 2019-07-02 05:25:18 +00:00
net Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
net80211 Enhance the comment ieee80211_add_channel() to avoid a 2019-06-10 14:31:18 +00:00
netgraph Remove 'dir' argument in ng_ipfw_input, since ip_fw_args now has this info. 2019-03-14 22:30:05 +00:00
netinet Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
netinet6 Add an external mbuf buffer type that holds multiple unmapped pages. 2019-06-29 00:48:33 +00:00
netipsec netipsec key_register: check for M_NOWAIT alloc failure 2019-06-25 15:43:52 +00:00
netpfil Convert all IPv4 and IPv6 multicast memberships into using a STAILQ 2019-06-25 11:54:41 +00:00
netsmb
nfs
nfsclient
nfsserver
nlm
ofed Fix prio vs. nonprio tagged traffic in RDMACM 2019-06-04 06:21:31 +00:00
opencrypto Move declaration of warninterval out from under COMPAT_FREEBSD32. 2019-06-11 23:28:07 +00:00
powerpc Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
riscv Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
rpc Fix malloc stats for the RPCSEC_GSS server code when DEBUG is enabled. 2019-04-04 01:23:06 +00:00
security Extract eventfilter declarations to sys/_eventfilter.h 2019-05-20 00:38:23 +00:00
sparc64 Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
sys Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
teken Attempt to complete fixing programmable function keys for syscons. 2019-02-20 02:14:41 +00:00
tests Regularize the Netflix copyright 2019-02-04 21:28:25 +00:00
tools Add SDIO support. 2019-06-08 16:26:56 +00:00
ufs Add a new "untrusted" option to the mount command. Its purpose 2019-07-01 23:22:26 +00:00
vm Merge the vm_page hold and wire mechanisms. 2019-07-08 19:46:20 +00:00
x86 Currently, MCA entries remain on an every-growing linked list. This means 2019-06-08 18:26:48 +00:00
xdr
xen xen: introduce a new way to setup event channel upcall 2019-01-30 11:34:52 +00:00
Makefile