rsxx: don't open-code memdup_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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8ed6010d50
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820351f05b
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@ -203,14 +203,11 @@ static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf,
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char *buf;
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ssize_t st;
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buf = kzalloc(cnt, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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buf = memdup_user(ubuf, cnt);
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if (IS_ERR(buf))
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return PTR_ERR(buf);
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st = copy_from_user(buf, ubuf, cnt);
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if (!st)
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st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt,
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buf, 1);
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st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1);
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kfree(buf);
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if (st)
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return st;
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