diff options
Diffstat (limited to 'drivers/char/mbcs.c')
| -rw-r--r-- | drivers/char/mbcs.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c index acd8e9ed474..e5d3e3f7a49 100644 --- a/drivers/char/mbcs.c +++ b/drivers/char/mbcs.c @@ -15,6 +15,7 @@ #include <linux/moduleparam.h> #include <linux/types.h> #include <linux/ioport.h> +#include <linux/kernel.h> #include <linux/notifier.h> #include <linux/reboot.h> #include <linux/init.h> @@ -24,10 +25,9 @@ #include <linux/mm.h> #include <linux/uio.h> #include <linux/mutex.h> -#include <linux/smp_lock.h> +#include <linux/slab.h> #include <asm/io.h> #include <asm/uaccess.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/sn/addrs.h> #include <asm/sn/intr.h> @@ -40,6 +40,7 @@ #else #define DBG(fmt...) #endif +static DEFINE_MUTEX(mbcs_mutex); static int mbcs_major; static LIST_HEAD(soft_list); @@ -383,19 +384,19 @@ static int mbcs_open(struct inode *ip, struct file *fp) struct mbcs_soft *soft; int minor; - lock_kernel(); + mutex_lock(&mbcs_mutex); minor = iminor(ip); /* Nothing protects access to this list... */ list_for_each_entry(soft, &soft_list, list) { if (soft->nasid == minor) { fp->private_data = soft->cxdev; - unlock_kernel(); + mutex_unlock(&mbcs_mutex); return 0; } } - unlock_kernel(); + mutex_unlock(&mbcs_mutex); return -ENODEV; } @@ -506,7 +507,7 @@ static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma) vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - /* Remap-pfn-range will mark the range VM_IO and VM_RESERVED */ + /* Remap-pfn-range will mark the range VM_IO */ if (remap_pfn_range(vma, vma->vm_start, __pa(soft->gscr_addr) >> PAGE_SHIFT, @@ -715,8 +716,8 @@ static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char */ debug0 = *(uint64_t *) soft->debug_addr; - return sprintf(buf, "0x%lx 0x%lx\n", - (debug0 >> 32), (debug0 & 0xffffffff)); + return sprintf(buf, "0x%x 0x%x\n", + upper_32_bits(debug0), lower_32_bits(debug0)); } static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -798,7 +799,7 @@ static int mbcs_remove(struct cx_dev *dev) return 0; } -static const struct cx_device_id __devinitdata mbcs_id_table[] = { +static const struct cx_device_id mbcs_id_table[] = { { .part_num = MBCS_PART_NUM, .mfg_num = MBCS_MFG_NUM, |