Files
twx-linux/include/linux
Jason A. Donenfeld ec07b34945 random: make random_get_entropy() return an unsigned long
commit b0c3e796f2 upstream.

Some implementations were returning type `unsigned long`, while others
that fell back to get_cycles() were implicitly returning a `cycles_t` or
an untyped constant int literal. That makes for weird and confusing
code, and basically all code in the kernel already handled it like it
was an `unsigned long`. I recently tried to handle it as the largest
type it could be, a `cycles_t`, but doing so doesn't really help with
much.

Instead let's just make random_get_entropy() return an unsigned long all
the time. This also matches the commonly used `arch_get_random_long()`
function, so now RDRAND and RDTSC return the same sized integer, which
means one can fallback to the other more gracefully.

Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Theodore Ts'o <tytso@mit.edu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-22 14:11:14 +02:00
..
2021-01-30 13:54:11 +01:00
2021-05-19 10:08:30 +02:00
2022-04-15 14:18:32 +02:00
2021-03-04 10:26:29 +01:00
2021-02-07 15:35:49 +01:00
2021-11-17 09:48:17 +01:00
2021-06-30 08:47:51 -04:00
2021-09-03 10:08:12 +02:00
2021-03-07 12:20:49 +01:00
2021-12-14 14:49:02 +01:00
2021-06-10 13:37:14 +02:00