From 9c7f8bb50d64ac860ab9538d5be82a825bae6930 Mon Sep 17 00:00:00 2001
From: mb <mb@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sun, 29 Mar 2009 16:49:23 +0000
Subject: [PATCH] Make b43 hwrng optional

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15070 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/mac80211/Makefile                     |  2 +
 .../520-b43-autodepend-on-hwrandom.patch      | 78 +++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 package/mac80211/patches/520-b43-autodepend-on-hwrandom.patch

diff --git a/package/mac80211/Makefile b/package/mac80211/Makefile
index 5e83d4fc0..ce24dcacb 100644
--- a/package/mac80211/Makefile
+++ b/package/mac80211/Makefile
@@ -384,6 +384,7 @@ BUILDFLAGS:= \
 	$(if $(CONFIG_PCI),-DCONFIG_SSB_SPROM) \
 	$(if $(CONFIG_LEDS_TRIGGERS), -DCONFIG_MAC80211_LEDS -DCONFIG_LEDS_TRIGGERS -DCONFIG_B43_LEDS -DCONFIG_B43LEGACY_LEDS) \
 	$(if $(CONFIG_RFKILL),-DCONFIG_B43_RFKILL -DCONFIG_B43LEGACY_RFKILL) \
+	$(if $(CONFIG_HW_RANDOM),-DCONFIG_B43_HWRNG) \
 	$(if $(CONFIG_PCMCIA),-DCONFIG_SSB_PCMCIAHOST_POSSIBLE -DCONFIG_SSB_PCMCIAHOST -DCONFIG_B43_PCMCIA -DCONFIG_B43_PIO) \
 	$(if $(CONFIG_DEBUG_FS), -DCONFIG_MAC80211_DEBUGFS) \
 	-D__CONFIG_MAC80211_RC_DEFAULT=minstrel \
@@ -412,6 +413,7 @@ MAKE_OPTS:= \
 	$(if $(CONFIG_RFKILL),CONFIG_B43LEGACY_RFKILL=y,CONFIG_B43LEGACY_RFKILL=n) \
 	CONFIG_B43LEGACY_LEDS=$(CONFIG_LEDS_TRIGGERS) \
 	CONFIG_B43_LEDS=$(CONFIG_LEDS_TRIGGERS) \
+	$(if $(CONFIG_HW_RANDOM),CONFIG_B43_HWRNG=y,CONFIG_B43_HWRNG=n) \
 	$(if $(CONFIG_PACKAGE_kmod-b43),CONFIG_B43=m) \
 	$(if $(CONFIG_PACKAGE_kmod-b43legacy),CONFIG_B43LEGACY=m) \
 	KLIB_BUILD="$(LINUX_DIR)" \
diff --git a/package/mac80211/patches/520-b43-autodepend-on-hwrandom.patch b/package/mac80211/patches/520-b43-autodepend-on-hwrandom.patch
new file mode 100644
index 000000000..c79f6573f
--- /dev/null
+++ b/package/mac80211/patches/520-b43-autodepend-on-hwrandom.patch
@@ -0,0 +1,78 @@
+This patch is submitted upstream and can be removed when it hits compat-wireless.
+
+--mb
+
+
+
+Index: compat-wireless-2009-03-24/drivers/net/wireless/b43/b43.h
+===================================================================
+--- compat-wireless-2009-03-24.orig/drivers/net/wireless/b43/b43.h	2009-03-29 13:27:05.000000000 +0200
++++ compat-wireless-2009-03-24/drivers/net/wireless/b43/b43.h	2009-03-29 13:27:21.000000000 +0200
+@@ -624,9 +624,11 @@ 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;
+Index: compat-wireless-2009-03-24/drivers/net/wireless/b43/main.c
+===================================================================
+--- compat-wireless-2009-03-24.orig/drivers/net/wireless/b43/main.c	2009-03-29 13:27:05.000000000 +0200
++++ compat-wireless-2009-03-24/drivers/net/wireless/b43/main.c	2009-03-29 13:27:21.000000000 +0200
+@@ -2982,6 +2982,7 @@ 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;
+@@ -2997,17 +2998,21 @@ 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;
+@@ -3020,6 +3025,7 @@ 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;
+ }
+Index: compat-wireless-2009-03-24/config.mk
+===================================================================
+--- compat-wireless-2009-03-24.orig/config.mk	2009-03-29 13:28:03.000000000 +0200
++++ compat-wireless-2009-03-24/config.mk	2009-03-29 13:28:32.000000000 +0200
+@@ -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
+ 
-- 
2.20.1