From: Michael Buesch Date: Fri, 4 Sep 2009 20:57:26 +0000 (+0200) Subject: b43: remove SHM spinlock X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=69eddc8a37a33479205ac3a3d8575fad1466da90;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git b43: remove SHM spinlock This removes the SHM spinlock. SHM is protected by wl->mutex. Signed-off-by: Michael Buesch Tested-by: Larry Finger Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h index 1cd470d6e2da..09cfe68537b6 100644 --- a/drivers/net/wireless/b43/b43.h +++ b/drivers/net/wireless/b43/b43.h @@ -635,8 +635,6 @@ struct b43_wl { rwlock_t tx_lock; /* Lock for LEDs access. */ spinlock_t leds_lock; - /* Lock for SHM access. */ - spinlock_t shm_lock; /* We can only have one operating interface (802.11 core) * at a time. General information about this interface follows. diff --git a/drivers/net/wireless/b43/debugfs.c b/drivers/net/wireless/b43/debugfs.c index bf23a3a863fa..8f64943e3f60 100644 --- a/drivers/net/wireless/b43/debugfs.c +++ b/drivers/net/wireless/b43/debugfs.c @@ -125,7 +125,6 @@ static int shm16write__write_file(struct b43_wldev *dev, unsigned int routing, addr, mask, set; u16 val; int res; - unsigned long flags; res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X", &routing, &addr, &mask, &set); @@ -142,15 +141,13 @@ static int shm16write__write_file(struct b43_wldev *dev, if ((mask > 0xFFFF) || (set > 0xFFFF)) return -E2BIG; - spin_lock_irqsave(&dev->wl->shm_lock, flags); if (mask == 0) val = 0; else - val = __b43_shm_read16(dev, routing, addr); + val = b43_shm_read16(dev, routing, addr); val &= mask; val |= set; - __b43_shm_write16(dev, routing, addr, val); - spin_unlock_irqrestore(&dev->wl->shm_lock, flags); + b43_shm_write16(dev, routing, addr, val); return 0; } @@ -204,7 +201,6 @@ static int shm32write__write_file(struct b43_wldev *dev, unsigned int routing, addr, mask, set; u32 val; int res; - unsigned long flags; res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X", &routing, &addr, &mask, &set); @@ -221,15 +217,13 @@ static int shm32write__write_file(struct b43_wldev *dev, if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF)) return -E2BIG; - spin_lock_irqsave(&dev->wl->shm_lock, flags); if (mask == 0) val = 0; else - val = __b43_shm_read32(dev, routing, addr); + val = b43_shm_read32(dev, routing, addr); val &= mask; val |= set; - __b43_shm_write32(dev, routing, addr, val); - spin_unlock_irqrestore(&dev->wl->shm_lock, flags); + b43_shm_write32(dev, routing, addr, val); return 0; } diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index 23de3db4f6de..0a4d0b3eceb0 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -390,7 +390,7 @@ static inline void b43_shm_control_word(struct b43_wldev *dev, b43_write32(dev, B43_MMIO_SHM_CONTROL, control); } -u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) +u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) { u32 ret; @@ -413,20 +413,7 @@ out: return ret; } -u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset) -{ - struct b43_wl *wl = dev->wl; - unsigned long flags; - u32 ret; - - spin_lock_irqsave(&wl->shm_lock, flags); - ret = __b43_shm_read32(dev, routing, offset); - spin_unlock_irqrestore(&wl->shm_lock, flags); - - return ret; -} - -u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset) +u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset) { u16 ret; @@ -447,20 +434,7 @@ out: return ret; } -u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset) -{ - struct b43_wl *wl = dev->wl; - unsigned long flags; - u16 ret; - - spin_lock_irqsave(&wl->shm_lock, flags); - ret = __b43_shm_read16(dev, routing, offset); - spin_unlock_irqrestore(&wl->shm_lock, flags); - - return ret; -} - -void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) +void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) { if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); @@ -480,17 +454,7 @@ void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value b43_write32(dev, B43_MMIO_SHM_DATA, value); } -void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value) -{ - struct b43_wl *wl = dev->wl; - unsigned long flags; - - spin_lock_irqsave(&wl->shm_lock, flags); - __b43_shm_write32(dev, routing, offset, value); - spin_unlock_irqrestore(&wl->shm_lock, flags); -} - -void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) +void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) { if (routing == B43_SHM_SHARED) { B43_WARN_ON(offset & 0x0001); @@ -506,16 +470,6 @@ void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value b43_write16(dev, B43_MMIO_SHM_DATA, value); } -void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value) -{ - struct b43_wl *wl = dev->wl; - unsigned long flags; - - spin_lock_irqsave(&wl->shm_lock, flags); - __b43_shm_write16(dev, routing, offset, value); - spin_unlock_irqrestore(&wl->shm_lock, flags); -} - /* Read HostFlags */ u64 b43_hf_read(struct b43_wldev *dev) { @@ -4866,7 +4820,6 @@ static int b43_wireless_init(struct ssb_device *dev) /* Initialize struct b43_wl */ wl->hw = hw; spin_lock_init(&wl->leds_lock); - spin_lock_init(&wl->shm_lock); mutex_init(&wl->mutex); spin_lock_init(&wl->hardirq_lock); INIT_LIST_HEAD(&wl->devlist); diff --git a/drivers/net/wireless/b43/main.h b/drivers/net/wireless/b43/main.h index 0406e06781d4..40db03678d9f 100644 --- a/drivers/net/wireless/b43/main.h +++ b/drivers/net/wireless/b43/main.h @@ -112,13 +112,9 @@ void b43_tsf_read(struct b43_wldev *dev, u64 * tsf); void b43_tsf_write(struct b43_wldev *dev, u64 tsf); u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset); -u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset); u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset); -u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset); void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value); -void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value); void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value); -void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value); u64 b43_hf_read(struct b43_wldev *dev); void b43_hf_write(struct b43_wldev *dev, u64 value);