macintosh/adb-iop: Resolve static checker warnings

drivers/macintosh/adb-iop.c:215:28: warning: Using plain integer as NULL pointer
drivers/macintosh/adb-iop.c:170:5: warning: symbol 'adb_iop_probe' was not declared. Should it be static?
drivers/macintosh/adb-iop.c:177:5: warning: symbol 'adb_iop_init' was not declared. Should it be static?
drivers/macintosh/adb-iop.c:184:5: warning: symbol 'adb_iop_send_request' was not declared. Should it be static?
drivers/macintosh/adb-iop.c:230:5: warning: symbol 'adb_iop_autopoll' was not declared. Should it be static?
drivers/macintosh/adb-iop.c:236:6: warning: symbol 'adb_iop_poll' was not declared. Should it be static?
drivers/macintosh/adb-iop.c:241:5: warning: symbol 'adb_iop_reset_bus' was not declared. Should it be static?

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/25edf4450abd20e002b166ba3a11189dc1efa906.1590880623.git.fthain@telegraphics.com.au

diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c
index 7ecc41b..a2b28e0 100644 (file)
--- a/drivers/macintosh/adb-iop.c
+++ b/drivers/macintosh/adb-iop.c
@@ -166,21 +166,21 @@ static void adb_iop_start(void)
                         adb_iop_complete);
 }
 
-int adb_iop_probe(void)
+static int adb_iop_probe(void)
 {
        if (!iop_ism_present)
                return -ENODEV;
        return 0;
 }
 
-int adb_iop_init(void)
+static int adb_iop_init(void)
 {
        pr_info("adb: IOP ISM driver v0.4 for Unified ADB\n");
        iop_listen(ADB_IOP, ADB_CHAN, adb_iop_listen, "ADB");
        return 0;
 }
 
-int adb_iop_send_request(struct adb_request *req, int sync)
+static int adb_iop_send_request(struct adb_request *req, int sync)
 {
        int err;
 
@@ -211,7 +211,7 @@ static int adb_iop_write(struct adb_request *req)
 
        local_irq_save(flags);
 
-       if (current_req != 0) {
+       if (current_req) {
                last_req->next = req;
                last_req = req;
        } else {
@@ -227,18 +227,18 @@ static int adb_iop_write(struct adb_request *req)
        return 0;
 }
 
-int adb_iop_autopoll(int devs)
+static int adb_iop_autopoll(int devs)
 {
        /* TODO: how do we enable/disable autopoll? */
        return 0;
 }
 
-void adb_iop_poll(void)
+static void adb_iop_poll(void)
 {
        iop_ism_irq_poll(ADB_IOP);
 }
 
-int adb_iop_reset_bus(void)
+static int adb_iop_reset_bus(void)
 {
        struct adb_request req;