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@@ -9,6 +9,7 @@
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#include <linux/kernel.h>
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#include <linux/usb.h>
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+#include <linux/fs.h>
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#include <asm/uaccess.h>
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#include "usb_mon.h"
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@@ -42,19 +43,8 @@ static ssize_t mon_stat_read(struct file *file, char __user *buf,
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size_t nbytes, loff_t *ppos)
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{
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struct snap *sp = file->private_data;
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- loff_t pos = *ppos;
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- int cnt;
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- if (pos < 0 || pos >= sp->slen)
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- return 0;
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- if (nbytes == 0)
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- return 0;
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- if ((cnt = sp->slen - pos) > nbytes)
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- cnt = nbytes;
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- if (copy_to_user(buf, sp->str + pos, cnt))
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- return -EFAULT;
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- *ppos = pos + cnt;
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- return cnt;
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+ return simple_read_from_buffer(buf, nbytes, ppos, sp->str, sp->slen);
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}
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static int mon_stat_release(struct inode *inode, struct file *file)
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