powerpc: Convert feature_lock to raw_spinlock

feature_lock needs to be a real spinlock in RT. Convert it to
raw_spinlock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/pmac_feature.h b/arch/powerpc/include/asm/pmac_feature.h
index 877c35a4356ed954317e1aa0546b07980f57a434..00eedc5a4e616b7b51fdf31dd0b0b9b68508ff23 100644 (file)
--- a/arch/powerpc/include/asm/pmac_feature.h
+++ b/arch/powerpc/include/asm/pmac_feature.h
@@ -378,7 +378,7 @@ extern struct macio_chip* macio_find(struct device_node* child, int type);
  * Those are exported by pmac feature for internal use by arch code
  * only like the platform function callbacks, do not use directly in drivers
  */
-extern spinlock_t feature_lock;
+extern raw_spinlock_t feature_lock;
 extern struct device_node *uninorth_node;
 extern u32 __iomem *uninorth_base;
 

diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c
index fbc9bbd74dbdc9337ca2880f1d50a590d8f9f3a1..424b633fbe0dba4a61cca1658bc6d31dc9d6bf28 100644 (file)
--- a/arch/powerpc/platforms/powermac/feature.c
+++ b/arch/powerpc/platforms/powermac/feature.c
@@ -59,10 +59,10 @@ extern struct device_node *k2_skiplist[2];
  * We use a single global lock to protect accesses. Each driver has
  * to take care of its own locking
  */
-DEFINE_SPINLOCK(feature_lock);
+DEFINE_RAW_SPINLOCK(feature_lock);
 
-#define LOCK(flags)    spin_lock_irqsave(&feature_lock, flags);
-#define UNLOCK(flags)  spin_unlock_irqrestore(&feature_lock, flags);
+#define LOCK(flags)    raw_spin_lock_irqsave(&feature_lock, flags);
+#define UNLOCK(flags)  raw_spin_unlock_irqrestore(&feature_lock, flags);
 
 
 /*

diff --git a/arch/powerpc/platforms/powermac/pfunc_base.c b/arch/powerpc/platforms/powermac/pfunc_base.c
index db20de512f3e259c80f5e5c051a1b582d5fe9905..f5e3cda6660e0751656018377a31cc47f8c33ec4 100644 (file)
--- a/arch/powerpc/platforms/powermac/pfunc_base.c
+++ b/arch/powerpc/platforms/powermac/pfunc_base.c
@@ -50,13 +50,13 @@ static int macio_do_gpio_write(PMF_STD_ARGS, u8 value, u8 mask)
                value = ~value;
 
        /* Toggle the GPIO */
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        tmp = readb(addr);
        tmp = (tmp & ~mask) | (value & mask);
        DBG("Do write 0x%02x to GPIO %s (%p)\n",
            tmp, func->node->full_name, addr);
        writeb(tmp, addr);
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
 
        return 0;
 }
@@ -145,9 +145,9 @@ static int macio_do_write_reg32(PMF_STD_ARGS, u32 offset, u32 value, u32 mask)
        struct macio_chip *macio = func->driver_data;
        unsigned long flags;
 
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        MACIO_OUT32(offset, (MACIO_IN32(offset) & ~mask) | (value & mask));
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
        return 0;
 }
 
@@ -168,9 +168,9 @@ static int macio_do_write_reg8(PMF_STD_ARGS, u32 offset, u8 value, u8 mask)
        struct macio_chip *macio = func->driver_data;
        unsigned long flags;
 
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        MACIO_OUT8(offset, (MACIO_IN8(offset) & ~mask) | (value & mask));
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
        return 0;
 }
 
@@ -223,12 +223,12 @@ static int macio_do_write_reg32_slm(PMF_STD_ARGS, u32 offset, u32 shift,
        if (args == NULL || args->count == 0)
                return -EINVAL;
 
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        tmp = MACIO_IN32(offset);
        val = args->u[0].v << shift;
        tmp = (tmp & ~mask) | (val & mask);
        MACIO_OUT32(offset, tmp);
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
        return 0;
 }
 
@@ -243,12 +243,12 @@ static int macio_do_write_reg8_slm(PMF_STD_ARGS, u32 offset, u32 shift,
        if (args == NULL || args->count == 0)
                return -EINVAL;
 
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        tmp = MACIO_IN8(offset);
        val = args->u[0].v << shift;
        tmp = (tmp & ~mask) | (val & mask);
        MACIO_OUT8(offset, tmp);
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
        return 0;
 }
 
@@ -278,12 +278,12 @@ static int unin_do_write_reg32(PMF_STD_ARGS, u32 offset, u32 value, u32 mask)
 {
        unsigned long flags;
 
-       spin_lock_irqsave(&feature_lock, flags);
+       raw_spin_lock_irqsave(&feature_lock, flags);
        /* This is fairly bogus in darwin, but it should work for our needs
         * implemeted that way:
         */
        UN_OUT(offset, (UN_IN(offset) & ~mask) | (value & mask));
-       spin_unlock_irqrestore(&feature_lock, flags);
+       raw_spin_unlock_irqrestore(&feature_lock, flags);
        return 0;
 }