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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@meizu.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1647509089-4280-1-git-send-email-baihaowen@meizu.com
This commit is contained in:
Haowen Bai 2022-03-17 17:24:49 +08:00 committed by Michael Ellerman
parent a823307bf0
commit fc21ed8f26
1 changed files with 4 additions and 3 deletions
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7
drivers/macintosh/macio-adb.c
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@ -100,7 +100,7 @@ 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)) {
@ -183,7 +183,7 @@ 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 {
@ -213,7 +213,8 @@ 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]);