cris: use simple_read_from_buffer()
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -35,19 +35,16 @@ read_cris_profile(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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unsigned long p = *ppos;
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ssize_t ret;
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if (p > SAMPLE_BUFFER_SIZE)
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return 0;
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ret = simple_read_from_buffer(buf, count, ppos, sample_buffer,
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SAMPLE_BUFFER_SIZE);
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if (ret < 0)
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return ret;
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if (p + count > SAMPLE_BUFFER_SIZE)
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count = SAMPLE_BUFFER_SIZE - p;
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if (copy_to_user(buf, sample_buffer + p,count))
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return -EFAULT;
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memset(sample_buffer + p, 0, ret);
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memset(sample_buffer + p, 0, count);
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*ppos += count;
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return count;
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return ret;
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}
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static ssize_t
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