X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fvpe.c;h=c9ee9d2d5856a896a64e16321c92b37a174b7c6d;hp=459624969c99739d24b90aee8ca8bcdb6f52bd53;hb=b643b0fdbc59cf6bbb086974b29d2571e9e9f646;hpb=81b7bbd1932a04869d4c8635a75222dfc6089f96

diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 459624969c99..c9ee9d2d5856 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -29,6 +29,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/init.h>
@@ -48,6 +49,7 @@
 #include <asm/cacheflush.h>
 #include <asm/atomic.h>
 #include <asm/cpu.h>
+#include <asm/mips_mt.h>
 #include <asm/processor.h>
 #include <asm/system.h>
 #include <asm/vpe.h>
@@ -64,6 +66,7 @@ typedef void *vpe_handle;
 
 static char module_name[] = "vpe";
 static int major;
+static const int minor = 1;	/* fixed for now  */
 
 #ifdef CONFIG_MIPS_APSP_KSPD
  static struct kspd_notifications kspd_events;
@@ -1076,6 +1079,7 @@ static int getcwd(char *buff, int size)
 static int vpe_open(struct inode *inode, struct file *filp)
 {
 	int minor, ret;
+	enum vpe_state state;
 	struct vpe *v;
 	struct vpe_notifications *not;
 
@@ -1090,7 +1094,8 @@ static int vpe_open(struct inode *inode, struct file *filp)
 		return -ENODEV;
 	}
 
-	if (v->state != VPE_STATE_UNUSED) {
+	state = xchg(&v->state, VPE_STATE_INUSE);
+	if (state != VPE_STATE_UNUSED) {
 		dvpe();
 
 		printk(KERN_DEBUG "VPE loader: tc in use dumping regs\n");
@@ -1105,9 +1110,6 @@ static int vpe_open(struct inode *inode, struct file *filp)
 		cleanup_tc(get_tc(minor));
 	}
 
-	// allocate it so when we get write ops we know it's expected.
-	v->state = VPE_STATE_INUSE;
-
 	/* this of-course trashes what was there before... */
 	v->pbuffer = vmalloc(P_SIZE);
 	v->plen = P_SIZE;
@@ -1205,7 +1207,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
 	return ret;
 }
 
-static struct file_operations vpe_fops = {
+static const struct file_operations vpe_fops = {
 	.owner = THIS_MODULE,
 	.open = vpe_open,
 	.release = vpe_release,
@@ -1365,12 +1367,15 @@ static void kspd_sp_exit( int sp_id)
 }
 #endif
 
+static struct device *vpe_dev;
+
 static int __init vpe_module_init(void)
 {
 	struct vpe *v = NULL;
+	struct device *dev;
 	struct tc *t;
 	unsigned long val;
-	int i;
+	int i, err;
 
 	if (!cpu_has_mipsmt) {
 		printk("VPE loader: not a MIPS MT capable processor\n");
@@ -1383,6 +1388,14 @@ static int __init vpe_module_init(void)
 		return major;
 	}
 
+	dev = device_create(mt_class, NULL, MKDEV(major, minor),
+	                    "tc%d", minor);
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		goto out_chrdev;
+	}
+	vpe_dev = dev;
+
 	dmt();
 	dvpe();
 
@@ -1478,6 +1491,11 @@ static int __init vpe_module_init(void)
 	kspd_events.kspd_sp_exit = kspd_sp_exit;
 #endif
 	return 0;
+
+out_chrdev:
+	unregister_chrdev(major, module_name);
+
+	return err;
 }
 
 static void __exit vpe_module_exit(void)
@@ -1490,6 +1508,7 @@ static void __exit vpe_module_exit(void)
 		}
 	}
 
+	device_destroy(mt_class, MKDEV(major, minor));
 	unregister_chrdev(major, module_name);
 }