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authorJason A. Donenfeld <Jason@zx2c4.com>2022-04-08 18:03:13 +0200
committerJason A. Donenfeld <Jason@zx2c4.com>2022-05-13 23:59:23 +0200
commit0f392c95391f2d708b12971a07edaa7973f9eece (patch)
tree3c279a78e06debc8838343bc01f425170a1ea069 /arch/m68k
parent1366992e16bddd5e2d9a561687f367f9f802e2e4 (diff)
m68k: use fallback for random_get_entropy() instead of zero
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: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/include/asm/timex.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/m68k/include/asm/timex.h b/arch/m68k/include/asm/timex.h
index 6a21d9358280..f4a7a340f4ca 100644
--- a/arch/m68k/include/asm/timex.h
+++ b/arch/m68k/include/asm/timex.h
@@ -35,7 +35,7 @@ static inline unsigned long random_get_entropy(void)
{
if (mach_random_get_entropy)
return mach_random_get_entropy();
- return 0;
+ return random_get_entropy_fallback();
}
#define random_get_entropy random_get_entropy