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authorChristoph Hellwig <hch@lst.de>2007-07-20 07:50:49 +1000
committerPaul Mackerras <paulus@samba.org>2007-07-22 21:30:58 +1000
commit461e666723b6669bc6f7ef90b49b615396d70eb8 (patch)
treeaf341848054866c2f3d525032466b1993b0fcf20 /arch/ppc/syslib/mv64x60.c
parent[POWERPC] Allow smp_call_function_single() to current cpu (diff)
downloadlinux-dev-461e666723b6669bc6f7ef90b49b615396d70eb8.tar.xz
linux-dev-461e666723b6669bc6f7ef90b49b615396d70eb8.zip
[POWERPC] mv64x60: Use mutex instead of semaphore
Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to '')
-rw-r--r--arch/ppc/syslib/mv64x60.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/ppc/syslib/mv64x60.c b/arch/ppc/syslib/mv64x60.c
index 032f4b7f4225..d212b1c418a9 100644
--- a/arch/ppc/syslib/mv64x60.c
+++ b/arch/ppc/syslib/mv64x60.c
@@ -14,6 +14,7 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/mv643xx.h>
@@ -2359,7 +2360,7 @@ mv64460_chip_specific_init(struct mv64x60_handle *bh,
/* Export the hotswap register via sysfs for enum event monitoring */
#define VAL_LEN_MAX 11 /* 32-bit hex or dec stringified number + '\n' */
-DECLARE_MUTEX(mv64xxx_hs_lock);
+static DEFINE_MUTEX(mv64xxx_hs_lock);
static ssize_t
mv64xxx_hs_reg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
@@ -2372,14 +2373,14 @@ mv64xxx_hs_reg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
if (count < VAL_LEN_MAX)
return -EINVAL;
- if (down_interruptible(&mv64xxx_hs_lock))
+ if (mutex_lock_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_read_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
MV64360_PCICFG_CPCI_HOTSWAP, &v);
mv64x60_pci_exclude_bridge = save_exclude;
- up(&mv64xxx_hs_lock);
+ mutex_unlock(&mv64xxx_hs_lock);
return sprintf(buf, "0x%08x\n", v);
}
@@ -2396,14 +2397,14 @@ mv64xxx_hs_reg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
return -EINVAL;
if (sscanf(buf, "%i", &v) == 1) {
- if (down_interruptible(&mv64xxx_hs_lock))
+ if (mutex_lock_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
save_exclude = mv64x60_pci_exclude_bridge;
mv64x60_pci_exclude_bridge = 0;
early_write_config_dword(&sysfs_hose_a, 0, PCI_DEVFN(0, 0),
MV64360_PCICFG_CPCI_HOTSWAP, v);
mv64x60_pci_exclude_bridge = save_exclude;
- up(&mv64xxx_hs_lock);
+ mutex_unlock(&mv64xxx_hs_lock);
}
else
count = -EINVAL;
@@ -2433,10 +2434,10 @@ mv64xxx_hs_reg_valid_show(struct device *dev, struct device_attribute *attr,
pdev = container_of(dev, struct platform_device, dev);
pdp = (struct mv64xxx_pdata *)pdev->dev.platform_data;
- if (down_interruptible(&mv64xxx_hs_lock))
+ if (mutex_lock_interruptible(&mv64xxx_hs_lock))
return -ERESTARTSYS;
v = pdp->hs_reg_valid;
- up(&mv64xxx_hs_lock);
+ mutex_unlock(&mv64xxx_hs_lock);
return sprintf(buf, "%i\n", v);
}