linux-stable/drivers/char
Jonas Gorski e39b84448f hwrng: geode - fix accessing registers
[ Upstream commit 464bd8ec2f ]

When the membase and pci_dev pointer were moved to a new struct in priv,
the actual membase users were left untouched, and they started reading
out arbitrary memory behind the struct instead of registers. This
unfortunately turned the RNG into a constant number generator, depending
on the content of what was at that offset.

To fix this, update geode_rng_data_{read,present}() to also get the
membase via amd_geode_priv, and properly read from the right addresses
again.

Fixes: 9f6ec8dc57 ("hwrng: geode - Fix PCI device refcount leak")
Reported-by: Timur I. Davletshin <timur.davletshin@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217882
Tested-by: Timur I. Davletshin <timur.davletshin@gmail.com>
Suggested-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-20 11:52:04 +01:00
..
agp parisc: sba: Fix compile warning wrt list of SBA devices 2023-10-06 14:56:51 +02:00
hw_random hwrng: geode - fix accessing registers 2023-11-20 11:52:04 +01:00
ipmi ipmi_si: fix a memleak in try_smi_init() 2023-09-13 09:43:00 +02:00
mwave
pcmcia Revert "char: pcmcia: cm4000_cs: Replace mdelay with usleep_range in set_protocol" 2023-03-10 09:33:32 +01:00
tpm tpm_tis: Resend command to recover from data transfer errors 2023-09-23 11:11:02 +02:00
xilinx_hwicap
xillybus char: xillybus: fix a refcount leak in cleanup_dev() 2022-04-24 17:30:45 +02:00
adi.c
apm-emulation.c apm-emulation: drop unexpected word "the" in the comments 2022-06-27 16:15:27 +02:00
applicom.c applicom: Fix PCI device refcount leak in applicom_init() 2023-03-10 09:33:32 +01:00
applicom.h
bsr.c
ds1620.c
dsp56k.c
dtlk.c
hangcheck-timer.c
hpet.c
Kconfig Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
lp.c char: lp: remove redundant initialization of err 2022-06-10 15:29:50 +02:00
Makefile char: remove VR41XX related char driver 2022-07-28 16:12:33 +02:00
mem.c random: restore O_NONBLOCK support 2022-09-23 12:27:57 +02:00
misc.c char: misc: remove usage of list iterator past the loop body 2022-04-24 17:15:12 +02:00
mspec.c
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c
ppdev.c
ps3flash.c
random.c use less confusing names for iov_iter direction initializers 2023-02-09 11:28:04 +01:00
scx200_gpio.c
sonypi.c
tlclk.c
toshiba.c
ttyprintk.c char: ttyprintk: register console 2022-04-22 16:24:47 +02:00
uv_mmtimer.c
virtio_console.c Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00