linux-kernel - [PATCH] macintosh: macio-adb: Fix warning comparing pointer to 0

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Date:   Thu, 17 Mar 2022 10:30:01 +0800
From:   Haowen Bai <baihaowen@...zu.com>
To:     <benh@...nel.crashing.org>, <masahiroy@...nel.org>,
        <adobriyan@...il.com>
CC:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
        "Haowen Bai" <baihaowen@...zu.com>
Subject: [PATCH] macintosh: macio-adb: Fix warning comparing pointer to 0

Avoid pointer type value compared with 0 to make code clear.

Signed-off-by: Haowen Bai <baihaowen@...zu.com>
---
 drivers/macintosh/macio-adb.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/macintosh/macio-adb.c b/drivers/macintosh/macio-adb.c
index dc634c2..51afa46 100644
--- a/drivers/macintosh/macio-adb.c
+++ b/drivers/macintosh/macio-adb.c
@@ -97,7 +97,7 @@ int macio_init(void)
 	unsigned int irq;
 
 	adbs = of_find_compatible_node(NULL, "adb", "chrp,adb0");
-	if (adbs == 0)
+	if (!adbs)
 		return -ENXIO;
 
 	if (of_address_to_resource(adbs, 0, &r)) {
@@ -180,7 +180,7 @@ static int macio_send_request(struct adb_request *req, int sync)
 	req->reply_len = 0;
 
 	spin_lock_irqsave(&macio_lock, flags);
-	if (current_req != 0) {
+	if (current_req) {
 		last_req->next = req;
 		last_req = req;
 	} else {
@@ -210,7 +210,7 @@ static irqreturn_t macio_adb_interrupt(int irq, void *arg)
 	spin_lock(&macio_lock);
 	if (in_8(&adb->intr.r) & TAG) {
 		handled = 1;
-		if ((req = current_req) != 0) {
+		req = current_req;
+		if (req) {
 			/* put the current request in */
 			for (i = 0; i < req->nbytes; ++i)
 				out_8(&adb->data[i].r, req->data[i]);
-- 
2.7.4