staging: dgnc: change style of NULL comparison
Change the NULL comparison style as warned by checkpatch. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1553,7 +1553,7 @@ static int dgnc_tty_chars_in_buffer(struct tty_struct *tty)
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uint chars = 0;
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unsigned long flags;
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if (tty == NULL)
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if (!tty)
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return 0;
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un = tty->driver_data;
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@ -1658,7 +1658,7 @@ static int dgnc_tty_write_room(struct tty_struct *tty)
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int ret = 0;
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unsigned long flags;
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if (tty == NULL || dgnc_TmpWriteBuf == NULL)
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if (!tty || !dgnc_TmpWriteBuf)
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return 0;
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un = tty->driver_data;
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@ -1739,7 +1739,7 @@ static int dgnc_tty_write(struct tty_struct *tty,
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ushort tmask;
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uint remain;
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if (tty == NULL || dgnc_TmpWriteBuf == NULL)
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if (!tty || !dgnc_TmpWriteBuf)
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return 0;
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un = tty->driver_data;
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