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205a525c33
kernel-ark/drivers/char
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Herbert Xu 205a525c33 random: Add callback API for random pool readiness 
The get_blocking_random_bytes API is broken because the wait can
be arbitrarily long (potentially forever) so there is no safe way
of calling it from within the kernel.

This patch replaces it with a callback API instead.  The callback
is invoked potentially from interrupt context so the user needs
to schedule their own work thread if necessary.

In addition to adding callbacks, they can also be removed as
otherwise this opens up a way for user-space to allocate kernel
memory with no bound (by opening algif_rng descriptors and then
closing them).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-06-10 19:13:56 +08:00
..
agp Merge branch 'drm-intel-next' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-02-05 10:32:44 +10:00
hw_random hwrng: bcm63xx - Fix driver compilation 2015-05-04 17:49:52 +08:00
ipmi ipmi_ssif: Use interruptible completion for waiting in the thread 2015-04-10 20:51:42 -05:00
mwave drivers/char: delete non-required instances of include <linux/init.h> 2014-02-07 15:10:19 -08:00
pcmcia char: synclink: Remove WARN_ON for bad port count 2014-07-10 16:07:46 -07:00
tpm Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2015-04-15 11:08:27 -07:00
xilinx_hwicap char: xilinx_hwicap: Remove .owner field for driver 2014-09-23 23:13:13 -07:00
xillybus char: xillybus: drop owner assignment from platform_drivers 2014-10-20 16:20:21 +02:00
apm-emulation.c apm-emulation: add hibernation APM events to support suspend2disk 2014-01-07 13:50:28 +01:00
applicom.c applicom: dereferencing NULL on error path 2014-05-27 17:43:12 -07:00
applicom.h
bfin-otp.c
bsr.c bsr: avoid format string leaking into device name 2014-07-09 16:59:15 -07:00
ds1302.c
ds1620.c ds1620: single_open() leak 2013-05-05 00:11:29 -04:00
dsp56k.c drivers/char/dsp56k.c: drop check for negativity of unsigned parameter 2014-07-17 18:38:37 -07:00
dtlk.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
efirtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
generic_nvram.c
genrtc.c rtc: single_open() leaks 2013-05-05 00:12:29 -04:00
hangcheck-timer.c hangcheck-timer: cleanup casting in hangcheck_init() 2014-11-07 11:24:01 -08:00
hpet.c ACPICA: Resources: Provide common part for struct acpi_resource_address structures. 2015-01-26 16:09:56 +01:00
i8k.c i8k: Add support for fan labels 2015-01-25 09:17:59 -08:00
Kconfig drivers: char: mem: Make /dev/mem an optional device 2015-01-12 05:04:11 -08:00
lp.c char: Int overflow in lp_do_ioctl(). 2013-12-18 16:39:54 -08:00
Makefile xillybus: Move out of staging 2014-09-23 23:44:16 -07:00
mbcs.c
mbcs.h
mem.c switch drivers/char/mem.c to ->read_iter/->write_iter 2015-04-11 22:29:40 -04:00
misc.c Revert "misc: always assign miscdevice to file->private_data in open()" 2014-11-14 16:49:49 -08:00
mmtimer.c
msm_smd_pkt.c treewide: Fix typos in printk 2013-12-19 15:10:49 +01:00
mspec.c char: Use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT 2013-05-21 10:07:54 -07:00
nsc_gpio.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
nvram.c
nwbutton.c char: nwbutton: open-code interruptible_sleep_on 2014-01-08 15:29:52 -08:00
nwbutton.h
nwflash.c
pc8736x_gpio.c
ppdev.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
ps3flash.c ps3flash: switch to generic_file_llseek_size() 2013-06-29 12:57:33 +04:00
random.c random: Add callback API for random pool readiness 2015-06-10 19:13:56 +08:00
raw.c make new_sync_{read,write}() static 2015-04-11 22:29:40 -04:00
rtc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
scx200_gpio.c
snsc_event.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
snsc.c various char drivers: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
snsc.h
sonypi.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tb0219.c char: drop owner assignment from platform_drivers 2014-10-20 16:20:19 +02:00
tile-srom.c fs: move struct kiocb to fs.h 2015-03-25 20:28:11 -04:00
tlclk.c tlclk: remove deprecated IRQF_DISABLED 2013-10-16 12:36:10 -07:00
toshiba.c
ttyprintk.c ttyprintk: Allow built as a module 2014-04-16 14:21:06 -07:00
uv_mmtimer.c
virtio_console.c virtio_console: avoid config access from irq 2015-03-05 13:36:18 +10:30