Auto-depend on HW_RANDOM, rather than "select"ing it.
This way the user has the choice to enable or disable HWRNG support.
Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
---
John, please queue for 2.6.31.
Index: wireless-testing/drivers/net/wireless/b43legacy/Kconfig
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43legacy/Kconfig
+++ wireless-testing/drivers/net/wireless/b43legacy/Kconfig
@@ -3,7 +3,6 @@ config B43LEGACY
depends on SSB_POSSIBLE && MAC80211 && WLAN_80211 && HAS_DMA
select SSB
select FW_LOADER
- select HW_RANDOM
---help---
b43legacy is a driver for 802.11b devices from Broadcom (BCM4301 and
BCM4303) and early model 802.11g chips (BCM4306 Ver. 2) used in the
@@ -51,6 +50,13 @@ config B43LEGACY_RFKILL
depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43LEGACY)
default y
+# This config option automatically enables b43 HW-RNG support,
+# if the HW-RNG core is enabled.
+config B43LEGACY_HWRNG
+ bool
+ depends on B43LEGACY && (HW_RANDOM = y || HW_RANDOM = B43LEGACY)
+ default y
+
config B43LEGACY_DEBUG
bool "Broadcom 43xx-legacy debugging"
depends on B43LEGACY
Index: wireless-testing/drivers/net/wireless/b43legacy/b43legacy.h
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43legacy/b43legacy.h
+++ wireless-testing/drivers/net/wireless/b43legacy/b43legacy.h
@@ -596,9 +596,11 @@ struct b43legacy_wl {
/* Stats about the wireless interface */
struct ieee80211_low_level_stats ieee_stats;
+#ifdef CONFIG_B43LEGACY_HWRNG
struct hwrng rng;
u8 rng_initialized;
char rng_name[30 + 1];
+#endif
/* The RF-kill button */
struct b43legacy_rfkill rfkill;
Index: wireless-testing/drivers/net/wireless/b43legacy/main.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/b43legacy/main.c
+++ wireless-testing/drivers/net/wireless/b43legacy/main.c
@@ -2393,6 +2393,7 @@ static void b43legacy_security_init(stru
dev->max_nr_keys - 8);
}
+#ifdef CONFIG_B43LEGACY_HWRNG
static int b43legacy_rng_read(struct hwrng *rng, u32 *data)
{
struct b43legacy_wl *wl = (struct b43legacy_wl *)rng->priv;
@@ -2408,17 +2409,21 @@ static int b43legacy_rng_read(struct hwr
return (sizeof(u16));
}
+#endif
static void b43legacy_rng_exit(struct b43legacy_wl *wl)
{
+#ifdef CONFIG_B43LEGACY_HWRNG
if (wl->rng_initialized)
hwrng_unregister(&wl->rng);
+#endif
}
static int b43legacy_rng_init(struct b43legacy_wl *wl)
{
- int err;
+ int err = 0;
+#ifdef CONFIG_B43LEGACY_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;
@@ -2432,6 +2437,7 @@ static int b43legacy_rng_init(struct b43
"number generator (%d)\n", err);
}
+#endif
return err;
}
--
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