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-rw-r--r--arch/mips/kernel/vpe.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 2bd2151c586a..dbb6b408f001 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -19,7 +19,7 @@
19 * VPE support module 19 * VPE support module
20 * 20 *
21 * Provides support for loading a MIPS SP program on VPE1. 21 * Provides support for loading a MIPS SP program on VPE1.
22 * The SP enviroment is rather simple, no tlb's. It needs to be relocatable 22 * The SP environment is rather simple, no tlb's. It needs to be relocatable
23 * (or partially linked). You should initialise your stack in the startup 23 * (or partially linked). You should initialise your stack in the startup
24 * code. This loader looks for the symbol __start and sets up 24 * code. This loader looks for the symbol __start and sets up
25 * execution to resume from there. The MIPS SDE kit contains suitable examples. 25 * execution to resume from there. The MIPS SDE kit contains suitable examples.
@@ -148,9 +148,9 @@ struct {
148 spinlock_t tc_list_lock; 148 spinlock_t tc_list_lock;
149 struct list_head tc_list; /* Thread contexts */ 149 struct list_head tc_list; /* Thread contexts */
150} vpecontrol = { 150} vpecontrol = {
151 .vpe_list_lock = SPIN_LOCK_UNLOCKED, 151 .vpe_list_lock = __SPIN_LOCK_UNLOCKED(vpe_list_lock),
152 .vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list), 152 .vpe_list = LIST_HEAD_INIT(vpecontrol.vpe_list),
153 .tc_list_lock = SPIN_LOCK_UNLOCKED, 153 .tc_list_lock = __SPIN_LOCK_UNLOCKED(tc_list_lock),
154 .tc_list = LIST_HEAD_INIT(vpecontrol.tc_list) 154 .tc_list = LIST_HEAD_INIT(vpecontrol.tc_list)
155}; 155};
156 156
@@ -1092,6 +1092,10 @@ static int vpe_open(struct inode *inode, struct file *filp)
1092 1092
1093 /* this of-course trashes what was there before... */ 1093 /* this of-course trashes what was there before... */
1094 v->pbuffer = vmalloc(P_SIZE); 1094 v->pbuffer = vmalloc(P_SIZE);
1095 if (!v->pbuffer) {
1096 pr_warning("VPE loader: unable to allocate memory\n");
1097 return -ENOMEM;
1098 }
1095 v->plen = P_SIZE; 1099 v->plen = P_SIZE;
1096 v->load_addr = NULL; 1100 v->load_addr = NULL;
1097 v->len = 0; 1101 v->len = 0;
@@ -1149,10 +1153,9 @@ static int vpe_release(struct inode *inode, struct file *filp)
1149 if (ret < 0) 1153 if (ret < 0)
1150 v->shared_ptr = NULL; 1154 v->shared_ptr = NULL;
1151 1155
1152 // cleanup any temp buffers 1156 vfree(v->pbuffer);
1153 if (v->pbuffer)
1154 vfree(v->pbuffer);
1155 v->plen = 0; 1157 v->plen = 0;
1158
1156 return ret; 1159 return ret;
1157} 1160}
1158 1161
@@ -1169,11 +1172,6 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
1169 if (v == NULL) 1172 if (v == NULL)
1170 return -ENODEV; 1173 return -ENODEV;
1171 1174
1172 if (v->pbuffer == NULL) {
1173 printk(KERN_ERR "VPE loader: no buffer for program\n");
1174 return -ENOMEM;
1175 }
1176
1177 if ((count + v->len) > v->plen) { 1175 if ((count + v->len) > v->plen) {
1178 printk(KERN_WARNING 1176 printk(KERN_WARNING
1179 "VPE loader: elf size too big. Perhaps strip uneeded symbols\n"); 1177 "VPE loader: elf size too big. Perhaps strip uneeded symbols\n");
@@ -1192,7 +1190,8 @@ static const struct file_operations vpe_fops = {
1192 .owner = THIS_MODULE, 1190 .owner = THIS_MODULE,
1193 .open = vpe_open, 1191 .open = vpe_open,
1194 .release = vpe_release, 1192 .release = vpe_release,
1195 .write = vpe_write 1193 .write = vpe_write,
1194 .llseek = noop_llseek,
1196}; 1195};
1197 1196
1198/* module wrapper entry points */ 1197/* module wrapper entry points */