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fefdae42465facfa26d41a7f0010f1ade32c3386
linux/drivers/char
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Alexey Dobriyan 99b7623380 proc 2/2: remove struct proc_dir_entry::owner 
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.

We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.

But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.

->read_proc/->write_proc were just fixed to not require ->owner for
protection.

rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.

Removing ->owner will also make PDE smaller.

So, let's nuke it.

Kudos to Jeff Layton for reminding about this, let's say, oversight.

http://bugzilla.kernel.org/show_bug.cgi?id=12454

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
..
agp
agp/intel: Add support for new intel chipset.
2009-03-27 15:12:08 -07:00
hw_random
Merge branch 'origin' into devel
2009-03-28 20:29:51 +00:00
ip2
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
ipmi
proc 2/2: remove struct proc_dir_entry::owner
2009-03-31 01:14:44 +04:00
mwave
mwave: struct device - replace bus_id with dev_name(), dev_set_name()
2009-01-06 10:44:38 -08:00
pcmcia
WAN: Convert generic HDLC drivers to netdev_ops.
2009-01-21 14:03:37 -08:00
rio
rio: Kill off ckmalloc
2009-01-02 10:19:38 -08:00
tpm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
2009-03-26 11:17:04 -07:00
xilinx_hwicap
xilinx_hwicap: remove improper wording in license statement
2008-12-17 11:23:07 -08:00
.gitignore
…
amiserial.c
m68k: amiserial - Kill warn_unused_result warnings
2009-01-12 20:56:39 +01:00
apm-emulation.c
APM emulation: Notify about all suspend events, not just APM invoked ones (v2)
2008-07-16 23:27:02 +02:00
applicom.c
applicom.c: fix apparently-broken code in do_ac_read()
2008-10-16 11:21:47 -07:00
applicom.h
…
bfin-otp.c
Blackfin char driver for Blackfin on-chip OTP memory (v3)
2008-04-25 08:04:56 +08:00
briq_panel.c
briq_panel: BKL pushdown
2008-06-20 14:05:55 -06:00
bsr.c
powerpc: Cleanup from l64 to ll64 change: drivers/char
2009-01-13 14:48:00 +11:00
cd1865.h
…
ChangeLog
…
consolemap.c
consolemap: indentation & braces disagree - reindent
2009-01-06 15:59:30 -08:00
cp437.uni
unicode table for cp437
2008-12-13 11:25:49 -08:00
cs5535_gpio.c
Add a bunch of cycle_kernel_lock() calls
2008-06-20 14:05:53 -06:00
cyclades.c
drivers/char/cyclades.c: cy_pci_probe: fix error path
2009-01-02 10:19:43 -08:00
defkeymap.c_shipped
Fix default compose table initialization
2008-03-03 14:53:16 -08:00
defkeymap.map
…
digi1.h
…
digiFep1.h
…
digiPCI.h
…
ds1302.c
rtc: use bcd2bin/bin2bcd
2008-10-20 08:52:41 -07:00
ds1620.c
[ARM] netwinder: clean up GPIO naming
2008-12-13 09:12:07 +00:00
dsp56k.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
dtlk.c
Add a bunch of cycle_kernel_lock() calls
2008-06-20 14:05:53 -06:00
efirtc.c
drivers/char/efirtc.c: removed duplicated #include
2008-08-04 16:59:56 -07:00
epca.c
trivial: fix an -> a typos in documentation and comments
2009-01-06 11:28:07 +01:00
epca.h
epca: use tty_port
2008-07-20 17:12:36 -07:00
epcaconfig.h
…
esp.c
tty_port: Add a port level carrier detect operation
2009-01-02 10:19:38 -08:00
generic_nvram.c
driver/char/generic_nvram: fix banner
2008-06-12 18:05:41 -07:00
generic_serial.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
genrtc.c
genrtc: BKL pushdown
2008-06-20 14:05:57 -06:00
hangcheck-timer.c
drivers/char/: Spelling fixes
2008-02-03 17:11:42 +02:00
hpet.c
x86: correct link to HPET timer specification
2008-11-24 10:05:12 +01:00
hvc_beat.c
powerpc/cell: Use correct types in beat files
2009-01-08 16:25:16 +11:00
hvc_console.c
hvc_console: Remove tty->low_latency
2009-01-16 16:15:16 +11:00
hvc_console.h
powerpc: Make open count variables signed in hvcs/hvsi/hvc_console
2008-12-03 21:04:13 +11:00
hvc_irq.c
hvc_console: Call free_irq() only if request_irq() was successful
2009-01-13 14:48:01 +11:00
hvc_iseries.c
drivers/hvc: Add missing of_node_put
2008-12-03 21:04:09 +11:00
hvc_iucv.c
[S390] hvc_iucv: Provide IUCV z/VM user ID filtering
2009-03-26 15:24:08 +01:00
hvc_rtas.c
[POWERPC] hvc_rtas_init() must be __init
2008-02-14 22:11:02 +11:00
hvc_udbg.c
powerpc: udbg-based backend for hvc_console
2008-11-19 16:04:25 +11:00
hvc_vio.c
drivers/hvc: Add missing of_node_put
2008-12-03 21:04:09 +11:00
hvc_xen.c
hvc_console: Add a hangup notifier for backends
2008-10-22 10:59:54 +11:00
hvcs.c
hvc_console: Remove tty->low_latency on pseries backends
2009-03-11 10:44:26 +11:00
hvsi.c
hvc_console: Remove tty->low_latency on pseries backends
2009-03-11 10:44:26 +11:00
i8k.c
i8k: Add Dell Vostro systems
2009-01-02 10:28:32 -08:00
isicom.c
tty: Introduce some close helpers for ports
2009-01-02 10:19:40 -08:00
istallion.c
tty: Introduce some close helpers for ports
2009-01-02 10:19:40 -08:00
Kconfig
NVRAM depends on RTC_DRV_CMOS
2009-01-31 01:21:59 +01:00
keyboard.c
Input: keyboard - fix potential out of bound access to key_map
2008-10-08 23:45:36 -04:00
lp.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
Makefile
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-12-28 16:54:33 -08:00
mbcs.c
mbcs: cdev lock_kernel() pushdown
2008-06-20 14:05:48 -06:00
mbcs.h
MBCS: convert dmareadlock to mutex
2008-02-07 08:42:25 -08:00
mem.c
mm: make vread() and vwrite() declaration
2009-01-06 15:59:05 -08:00
misc.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
mmtimer.c
mmtimer: Push BKL down into the ioctl handler
2008-07-17 11:34:49 -07:00
moxa.c
tty_port: Add a port level carrier detect operation
2009-01-02 10:19:38 -08:00
moxa.h
Char: moxa, cleanup rx/tx
2008-04-30 08:29:43 -07:00
mspec.c
mspec: convert nopfn to fault
2008-07-24 10:47:14 -07:00
mxser.c
tty: Introduce some close helpers for ports
2009-01-02 10:19:40 -08:00
mxser.h
mxser: convert large macros to functions
2008-04-30 08:29:49 -07:00
n_hdlc.c
tty: some ICANON magic is in the wrong places
2008-10-13 09:51:44 -07:00
n_r3964.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
n_tty.c
tty: N_TTY SIGIO only works for read
2009-01-02 10:19:40 -08:00
nozomi.c
tty: kref nozomi
2009-01-02 10:19:40 -08:00
nsc_gpio.c
…
nvram.c
[PATCH] nvram - convert PRINT_PROC to seq_file
2008-11-11 09:56:00 +00:00
nwbutton.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
nwbutton.h
…
nwflash.c
[ARM] netwinder: clean up GPIO naming
2008-12-13 09:12:07 +00:00
pc8736x_gpio.c
pc8736x_gpio: add support for PC87365 chips
2008-10-20 08:52:40 -07:00
ppdev.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
ps3flash.c
powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/char
2009-01-16 16:15:14 +11:00
pty.c
pty: Fix documentation
2009-01-12 16:37:00 -08:00
random.c
sparseirq: fix build with unknown irq_desc struct
2009-01-11 16:06:03 +01:00
raw.c
Add a missing unlock_kernel() in raw_open()
2009-03-27 10:59:09 -06:00
riscom8_reg.h
…
riscom8.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
riscom8.h
tty: add more tty_port fields
2008-07-20 17:12:38 -07:00
rocket_int.h
tty: rocketport uses different port flags to everyone else
2009-01-02 10:19:39 -08:00
rocket.c
tty: use port methods for the rocket driver
2009-01-02 10:19:42 -08:00
rocket.h
tty: rocketport uses different port flags to everyone else
2009-01-02 10:19:39 -08:00
rtc.c
RTC: Remove the BKL.
2009-01-08 16:44:03 -07:00
scc.h
m68k: atari - Rename "mfp" to "st_mfp"
2009-02-22 09:23:02 -08:00
scx200_gpio.c
Add a bunch of cycle_kernel_lock() calls
2008-06-20 14:05:53 -06:00
selection.c
Fix memory corruption in console selection
2009-01-31 15:51:31 -08:00
ser_a2232.c
m68k: ser_a2232 - Kill warn_unused_result warnings
2009-01-12 20:56:39 +01:00
ser_a2232.h
…
ser_a2232fw.ax
…
ser_a2232fw.h
…
serial167.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
snsc_event.c
byteorder: don't directly include linux/byteorder/generic.h
2008-05-16 12:01:45 -07:00
snsc.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
snsc.h
Convert asm/semaphore.h users to linux/semaphore.h
2008-04-18 22:22:54 -04:00
sonypi.c
Rationalize fasync return values
2009-03-16 08:34:35 -06:00
specialix_io8.h
tty: add more tty_port fields
2008-07-20 17:12:38 -07:00
specialix.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
stallion.c
tty: Introduce some close helpers for ports
2009-01-02 10:19:40 -08:00
sx.c
sx.c: avoid referencing freed memory if copy_from_user() fails
2009-02-20 17:57:49 -08:00
sx.h
Char: char/serial, remove SERIAL_TYPE_NORMAL redefines
2008-02-07 08:42:33 -08:00
sxboards.h
…
sxwindow.h
…
synclink_gt.c
WAN: Convert generic HDLC drivers to netdev_ops.
2009-01-21 14:03:37 -08:00
synclink.c
WAN: Convert generic HDLC drivers to netdev_ops.
2009-01-21 14:03:37 -08:00
synclinkmp.c
WAN: Convert generic HDLC drivers to netdev_ops.
2009-01-21 14:03:37 -08:00
sysrq.c
sysrq: add commentary on why we use the console loglevel over using KERN_EMERG
2009-01-15 16:39:36 -08:00
tb0219.c
Add a bunch of cycle_kernel_lock() calls
2008-06-20 14:05:53 -06:00
tlclk.c
tlckl: BKL pushdown
2008-06-20 14:05:51 -06:00
toshiba.c
toshiba: use ioremap_cached
2008-04-30 23:15:34 +02:00
tty_audit.c
Audit: Log TIOCSTI
2008-12-09 20:32:06 +11:00
tty_buffer.c
tty: split the buffering from tty_io
2008-10-13 09:51:40 -07:00
tty_io.c
Use f_lock to protect f_flags
2009-03-16 08:32:27 -06:00
tty_ioctl.c
tty: Fix race in the flush for some ldiscs
2009-01-15 12:48:35 -08:00
tty_ldisc.c
tty: Fix PPP hang under load
2009-01-02 10:19:38 -08:00
tty_port.c
tty: use port methods for the rocket driver
2009-01-02 10:19:42 -08:00
vc_screen.c
vcs: hook sysfs devices into object lifetime instead of "binding"
2009-03-24 16:38:26 -07:00
viotape.c
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
virtio_console.c
virtio_console: support console resizing
2008-12-30 09:26:10 +10:30
vme_scc.c
m68k: vme_scc - Kill warn_unused_result warnings
2009-01-12 20:56:38 +01:00
vr41xx_giu.c
drivers/char: use nr_irqs
2008-10-16 16:52:05 +02:00
vt_ioctl.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
vt.c
vcs: hook sysfs devices into object lifetime instead of "binding"
2009-03-24 16:38:26 -07:00