This patch is submitted upstream and can be removed when it hits compat-wireless. --mb --- a/drivers/net/wireless/b43/b43.h +++ b/drivers/net/wireless/b43/b43.h @@ -625,9 +625,11 @@ struct b43_wl { /* Stats about the wireless interface */ struct ieee80211_low_level_stats ieee_stats; +#ifdef CONFIG_B43_HWRNG struct hwrng rng; - u8 rng_initialized; + bool rng_initialized; char rng_name[30 + 1]; +#endif /* CONFIG_B43_HWRNG */ /* The RF-kill button */ struct b43_rfkill rfkill; --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -2980,6 +2980,7 @@ static void b43_security_init(struct b43 b43_clear_keys(dev); } +#ifdef CONFIG_B43_HWRNG static int b43_rng_read(struct hwrng *rng, u32 *data) { struct b43_wl *wl = (struct b43_wl *)rng->priv; @@ -2995,17 +2996,21 @@ static int b43_rng_read(struct hwrng *rn return (sizeof(u16)); } +#endif /* CONFIG_B43_HWRNG */ static void b43_rng_exit(struct b43_wl *wl) { +#ifdef CONFIG_B43_HWRNG if (wl->rng_initialized) hwrng_unregister(&wl->rng); +#endif /* CONFIG_B43_HWRNG */ } static int b43_rng_init(struct b43_wl *wl) { - int err; + int err = 0; +#ifdef CONFIG_B43_HWRNG snprintf(wl->rng_name, ARRAY_SIZE(wl->rng_name), "%s_%s", KBUILD_MODNAME, wiphy_name(wl->hw->wiphy)); wl->rng.name = wl->rng_name; @@ -3018,6 +3023,7 @@ static int b43_rng_init(struct b43_wl *w b43err(wl, "Failed to register the random " "number generator (%d)\n", err); } +#endif /* CONFIG_B43_HWRNG */ return err; } --- a/config.mk +++ b/config.mk @@ -148,6 +148,7 @@ CONFIG_ATH9K_DEBUG=y # CONFIG_B43_PIO=y # CONFIG_B43_LEDS=y # CONFIG_B43_RFKILL=y +# CONFIG_B43_HWRNG=y # CONFIG_B43_DEBUG=y # CONFIG_B43_FORCE_PIO=y