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linux/drivers/char
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Matt Mackall cda796a3d5 random: don't try to look at entropy_count outside the lock 
As a non-atomic value, it's only safe to look at entropy_count when the
pool lock is held, so we move the BUG_ON inside the lock for correctness.

Also remove the spurious comment.  It's ok for entropy_count to
temporarily exceed POOLBITS so long as it's left in a consistent state
when the lock is released.

This is a more correct, simple, and idiomatic fix for the bug in
8b76f46a2db.  I've left the reorderings introduced by that patch in place
as they're harmless, even though they don't properly deal with potential
atomicity issues.

Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-06 15:59:30 -08:00
..
agp
agp/intel: Fix broken ® symbol in device name.
2008-12-29 10:06:20 +10:00
hw_random
Tidy up addresses in random drivers
2008-10-27 08:39:52 -07:00
ip2
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -07:00
ipmi
Fix platform drivers that crash on suspend/resume
2008-11-12 17:17:16 -08:00
mwave
mwave: ioctl BKL pushdown
2008-07-25 10:53:43 -07:00
pcmcia
synclink_cs: Convert to tty_port
2009-01-02 10:19:42 -08:00
rio
rio: Kill off ckmalloc
2009-01-02 10:19:38 -08:00
tpm
tpm: don't export static functions
2008-10-20 08:50:24 -07:00
xilinx_hwicap
xilinx_hwicap: remove improper wording in license statement
2008-12-17 11:23:07 -08:00
.gitignore
…
amiserial.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
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/BSR: Support multiple OF-node description of BSR
2008-12-03 21:03:27 +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
tty: Redo the rocket driver locking
2009-01-02 10:19:41 -08:00
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] hvcbeat: Fix buffer manipulation
2008-04-17 07:46:10 +10:00
hvc_console.c
pty: simplify resize
2009-01-02 10:19:36 -08:00
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: Add a hangup notifier for backends
2008-10-22 10:59:54 +11:00
hvc_iseries.c
drivers/hvc: Add missing of_node_put
2008-12-03 21:04:09 +11:00
hvc_iucv.c
[S390] s390/hvc_console: z/VM IUCV hypervisor console support
2008-12-25 13:39:03 +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
powerpc: Make open count variables signed in hvcs/hvsi/hvc_console
2008-12-03 21:04:13 +11:00
hvsi.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
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
genrtc: disable genrtc on Blackfin systems
2009-01-06 15:59:23 -08:00
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
…
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
…
pty.c
tty: PTYs set TTY_DO_WRITE_WAKEUP when they don't need to
2009-01-02 10:19:40 -08:00
random.c
random: don't try to look at entropy_count outside the lock
2009-01-06 15:59:30 -08:00
raw.c
[PATCH] kill the rest of struct file propagation in block ioctls
2008-10-21 07:49:14 -04:00
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
saner FASYNC handling on file close
2008-11-01 09:49:46 -07:00
scc.h
…
scx200_gpio.c
Add a bunch of cycle_kernel_lock() calls
2008-06-20 14:05:53 -06:00
selection.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
ser_a2232.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
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
Merge branch 'misc' into release
2008-11-11 21:14:11 -05:00
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
tty: Remove some pointless casts
2009-01-02 10:19:40 -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
tty: Introduce some close helpers for ports
2009-01-02 10:19:40 -08:00
synclink.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
synclinkmp.c
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
sysrq.c
sysrq: more explicit, less terse help messages
2009-01-06 15:59:14 -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
pty: simplify resize
2009-01-02 10:19:36 -08:00
tty_ioctl.c
tty: some ICANON magic is in the wrong places
2008-10-13 09:51:44 -07:00
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
device create: char: convert device_create_drvdata to device_create
2008-10-16 09:24:42 -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
tty: Remove some pointless casts
2009-01-02 10:19:40 -08:00
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
pty: simplify resize
2009-01-02 10:19:36 -08:00