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Code Issues

ar71xx: use spinlock in ar71xx_device_{start,stop}

Browse Source 
SVN-Revision: 24929
This commit is contained in:
Gabor Juhos 2011-01-08 11:28:32 +00:00
parent 271bb8385b
commit 0de8689b70
1 changed files with 20 additions and 18 deletions
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38
target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c
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@ -13,10 +13,12 @@
#include <linux/module.h>
#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <asm/mach-ar71xx/ar71xx.h>
static DEFINE_MUTEX(ar71xx_flash_mutex);
static DEFINE_SPINLOCK(ar71xx_device_lock);
void __iomem *ar71xx_ddr_base;
EXPORT_SYMBOL_GPL(ar71xx_ddr_base);
@ -43,30 +45,30 @@ void ar71xx_device_stop(u32 mask)
case AR71XX_SOC_AR7130:
case AR71XX_SOC_AR7141:
case AR71XX_SOC_AR7161:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t | mask);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR7240:
case AR71XX_SOC_AR7241:
case AR71XX_SOC_AR7242:
mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
t |= mask;
t &= ~mask_inv;
ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9130:
case AR71XX_SOC_AR9132:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t | mask);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
default:
@ -85,30 +87,30 @@ void ar71xx_device_start(u32 mask)
case AR71XX_SOC_AR7130:
case AR71XX_SOC_AR7141:
case AR71XX_SOC_AR7161:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR71XX_RESET_REG_RESET_MODULE, t & ~mask);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR7240:
case AR71XX_SOC_AR7241:
case AR71XX_SOC_AR7242:
mask_inv = mask & RESET_MODULE_USB_OHCI_DLL_7240;
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
t &= ~mask;
t |= mask_inv;
ar71xx_reset_wr(AR724X_RESET_REG_RESET_MODULE, t);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9130:
case AR71XX_SOC_AR9132:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
ar71xx_reset_wr(AR91XX_RESET_REG_RESET_MODULE, t & ~mask);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
default:
@ -126,24 +128,24 @@ int ar71xx_device_stopped(u32 mask)
case AR71XX_SOC_AR7130:
case AR71XX_SOC_AR7141:
case AR71XX_SOC_AR7161:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR71XX_RESET_REG_RESET_MODULE);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR7240:
case AR71XX_SOC_AR7241:
case AR71XX_SOC_AR7242:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR724X_RESET_REG_RESET_MODULE);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
case AR71XX_SOC_AR9130:
case AR71XX_SOC_AR9132:
local_irq_save(flags);
spin_lock_irqsave(&ar71xx_device_lock, flags);
t = ar71xx_reset_rr(AR91XX_RESET_REG_RESET_MODULE);
local_irq_restore(flags);
spin_unlock_irqrestore(&ar71xx_device_lock, flags);
break;
default: