From: "Jason A. Donenfeld" Jason@zx2c4.com
commit ac9756c79797bb98972736b13cfb239fd2cffb79 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.
This is accomplished by just including the asm-generic code like on other architectures, which means we can get rid of the empty stub function here.
Cc: Thomas Gleixner tglx@linutronix.de Cc: Arnd Bergmann arnd@arndb.de Cc: David S. Miller davem@davemloft.net Signed-off-by: Jason A. Donenfeld Jason@zx2c4.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/sparc/include/asm/timex_32.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
--- a/arch/sparc/include/asm/timex_32.h +++ b/arch/sparc/include/asm/timex_32.h @@ -8,8 +8,6 @@
#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
-/* XXX Maybe do something better at some point... -DaveM */ -typedef unsigned long cycles_t; -#define get_cycles() (0) +#include <asm-generic/timex.h>
#endif