linux-stable/arch/nios2
Jason A. Donenfeld 71cc2c05cc nios2: use fallback for random_get_entropy() instead of zero
commit c04e72700f upstream.

In the event that random_get_entropy() can't access a cycle counter or
similar, falling back to returning 0 is really not the best we can do.
Instead, at least calling random_get_entropy_fallback() would be
preferable, because that always needs to return _something_, even
falling back to jiffies eventually. It's not as though
random_get_entropy_fallback() is super high precision or guaranteed to
be entropic, but basically anything that's not zero all the time is
better than returning zero all the time.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:27:14 +02:00
..
boot kbuild: do not quote string values in include/config/auto.conf 2022-01-08 18:03:57 +09:00
configs sysctl: Remove the sysctl system call 2019-11-26 13:03:56 -06:00
include nios2: use fallback for random_get_entropy() instead of zero 2022-05-30 09:27:14 +02:00
kernel uaccess: fix type mismatch warnings from access_ok() 2022-04-08 13:58:44 +02:00
lib treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
mm mm: remove redundant check about FAULT_FLAG_ALLOW_RETRY bit 2022-01-15 16:30:27 +02:00
platform nios2: Make NIOS2_DTB_SOURCE_BOOL depend on !COMPILE_TEST 2021-10-27 09:29:07 -05:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig Tracing updates for 5.15: 2021-09-05 11:50:41 -07:00
Kconfig.debug NIOS2: fix kconfig unmet dependency warning for SERIAL_CORE_CONSOLE 2021-09-24 08:49:39 -05:00
Makefile kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00