Module Name: src
Committed By: christos
Date: Sun Jan 8 05:04:45 UTC 2017
Modified Files:
src/sys/arch/arm/broadcom: bcm53xx_rng.c
Log Message:
Limit number of words we read..
To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 src/sys/arch/arm/broadcom/bcm53xx_rng.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/arm/broadcom/bcm53xx_rng.c
diff -u src/sys/arch/arm/broadcom/bcm53xx_rng.c:1.8 src/sys/arch/arm/broadcom/bcm53xx_rng.c:1.9
--- src/sys/arch/arm/broadcom/bcm53xx_rng.c:1.8 Mon Apr 13 17:18:40 2015
+++ src/sys/arch/arm/broadcom/bcm53xx_rng.c Sun Jan 8 00:04:45 2017
@@ -33,7 +33,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: bcm53xx_rng.c,v 1.8 2015/04/13 21:18:40 riastradh Exp $");
+__KERNEL_RCSID(1, "$NetBSD: bcm53xx_rng.c,v 1.9 2017/01/08 05:04:45 christos Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -163,13 +163,14 @@ size_t
bcmrng_empty(struct bcmrng_softc *sc)
{
mutex_enter(sc->sc_lock);
+ uint32_t data[128];
size_t nwords = __SHIFTOUT(bcmrng_read_4(sc, RNG_STATUS), RNG_VAL);
if (nwords == 0) {
mutex_exit(sc->sc_lock);
return 0;
}
-
- uint32_t data[nwords];
+ if (nwords > __arraycount(data))
+ nords = __arraycount(data);
bcmrng_read_multi_4(sc, RNG_DATA, data, nwords);
