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staging: dgnc: change style of NULL comparison

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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>
This commit is contained in:
Sudip Mukherjee 2015-10-03 20:52:44 +05:30 committed by Greg Kroah-Hartman
parent 2d9920eca4
commit 60acb623c9
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/dgnc/dgnc_tty.c
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@ -1553,7 +1553,7 @@ static int dgnc_tty_chars_in_buffer(struct tty_struct *tty)
uint chars = 0;
unsigned long flags;
if (tty == NULL)
if (!tty)
return 0;
un = tty->driver_data;
@ -1658,7 +1658,7 @@ static int dgnc_tty_write_room(struct tty_struct *tty)
int ret = 0;
unsigned long flags;
if (tty == NULL || dgnc_TmpWriteBuf == NULL)
if (!tty || !dgnc_TmpWriteBuf)
return 0;
un = tty->driver_data;
@ -1739,7 +1739,7 @@ static int dgnc_tty_write(struct tty_struct *tty,
ushort tmask;
uint remain;
if (tty == NULL || dgnc_TmpWriteBuf == NULL)
if (!tty || !dgnc_TmpWriteBuf)
return 0;
un = tty->driver_data;