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pmem: fix pass miscdevice pointer via file private data

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黄涛
2011-12-13 12:05:20 +08:00
parent d49cd7d1e1
commit e438d11cd2
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/pmem.c
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@@ -337,7 +337,7 @@ static int pmem_open(struct inode *inode, struct file *file)
DLOG("current %u file %p(%d)\n", current->pid, file, file_count(file));
/* setup file->private_data to indicate its unmapped */
/* you can only open a pmem device one time */
if (file->private_data != NULL)
if (file->private_data != NULL && file->private_data != &pmem[id].dev)
return -1;
data = kmalloc(sizeof(struct pmem_data), GFP_KERNEL);
if (!data) {