linux-kernel - [PATCH v2 3/3] staging: speakup: Simplify "NULL" comparisons

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Message-Id: <20170319051950.14650-4-arushisinghal19971997@gmail.com>
Date:   Sun, 19 Mar 2017 10:49:50 +0530
From:   Arushi Singhal <arushisinghal19971997@...il.com>
To:     w.d.hubbs@...il.com
Cc:     chris@...-brannons.com, outreachy-kernel@...glegroups.com,
        kirk@...sers.ca, samuel.thibault@...-lyon.org,
        gregkh@...uxfoundation.org, speakup@...ux-speakup.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Arushi Singhal <arushisinghal19971997@...il.com>
Subject: [PATCH v2 3/3] staging: speakup: Simplify "NULL" comparisons

Fixed coding style for null comparisons in speakup driver to be more
consistant with the rest of the kernel coding style.
Replaced 'x != NULL' with 'x' and 'x = NULL' with '!x'.

Signed-off-by: Arushi Singhal <arushisinghal19971997@...il.com>
---
changes in v2
 - no change

 drivers/staging/speakup/selection.c   | 2 +-
 drivers/staging/speakup/varhandlers.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/speakup/selection.c b/drivers/staging/speakup/selection.c
index afd9a446a06f..4417c00e68a7 100644
--- a/drivers/staging/speakup/selection.c
+++ b/drivers/staging/speakup/selection.c
@@ -175,7 +175,7 @@ static struct speakup_paste_work speakup_paste_work = {
 
 int speakup_paste_selection(struct tty_struct *tty)
 {
-	if (cmpxchg(&speakup_paste_work.tty, NULL, tty) != NULL)
+	if (cmpxchg(&speakup_paste_work.tty, NULL, tty))
 		return -EBUSY;
 
 	tty_kref_get(tty);
diff --git a/drivers/staging/speakup/varhandlers.c b/drivers/staging/speakup/varhandlers.c
index cc984196020f..5910fe0b1365 100644
--- a/drivers/staging/speakup/varhandlers.c
+++ b/drivers/staging/speakup/varhandlers.c
@@ -98,7 +98,7 @@ void speakup_register_var(struct var_t *var)
 		}
 	}
 	p_header = var_ptrs[var->var_id];
-	if (p_header->data != NULL)
+	if (p_header->data)
 		return;
 	p_header->data = var;
 	switch (p_header->var_type) {
@@ -210,11 +210,11 @@ int spk_set_num_var(int input, struct st_var_header *var, int how)
 		return -ERANGE;
 
 	var_data->u.n.value = val;
-	if (var->var_type == VAR_TIME && p_val != NULL) {
+	if (var->var_type == VAR_TIME && p_val) {
 		*p_val = msecs_to_jiffies(val);
 		return 0;
 	}
-	if (p_val != NULL)
+	if (p_val)
 		*p_val = val;
 	if (var->var_id == PUNC_LEVEL) {
 		spk_punc_mask = spk_punc_masks[val];
-- 
2.11.0