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Commit 910cfee3 authored by Larry Finger's avatar Larry Finger Committed by John W. Linville
Browse files

b43legacy: Do not select HW_RANDOM



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: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 66174bbe
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+7 −1
Original line number Diff line number Diff line
@@ -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
+2 −0
Original line number Diff line number Diff line
@@ -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;
+7 −1
Original line number Diff line number Diff line
@@ -2297,6 +2297,7 @@ static void b43legacy_security_init(struct b43legacy_wldev *dev)
				  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;
@@ -2312,17 +2313,21 @@ static int b43legacy_rng_read(struct hwrng *rng, u32 *data)

	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;
@@ -2336,6 +2341,7 @@ static int b43legacy_rng_init(struct b43legacy_wl *wl)
		       "number generator (%d)\n", err);
	}

#endif
	return err;
}