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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: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2009-04-01 10:42:36 -05:00 committed by John W. Linville
parent 66174bbea0
commit 910cfee363
3 changed files with 16 additions and 2 deletions
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8
drivers/net/wireless/b43legacy/Kconfig
View File

@ -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
drivers/net/wireless/b43legacy/b43legacy.h
View File

@ -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;

8
drivers/net/wireless/b43legacy/main.c
View File

@ -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;
}