linux-kernel - [PATCH 7/8] macintosh/adb-iop: Implement sending -> idle state transition

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Message-Id: <6991996dd4aaf0b52cfd650172bf0f6fbe37a452.1590880623.git.fthain@telegraphics.com.au>
Date:   Sun, 31 May 2020 09:17:03 +1000
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     Joshua Thompson <funaho@...ai.org>,
        linux-m68k@...ts.linux-m68k.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] macintosh/adb-iop: Implement sending -> idle state
 transition

On leaving the 'sending' state, proceed to the 'idle' state if no reply is
expected. Drop redundant test for adb_iop_state == sending && current_req.

Cc: Joshua Thompson <funaho@...ai.org>
Tested-by: Stan Johnson <userm57@...oo.com>
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
---
 drivers/macintosh/adb-iop.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/macintosh/adb-iop.c b/drivers/macintosh/adb-iop.c
index f22792c95d4f..8594e4f9a830 100644
--- a/drivers/macintosh/adb-iop.c
+++ b/drivers/macintosh/adb-iop.c
@@ -77,15 +77,14 @@ static void adb_iop_done(void)
 
 static void adb_iop_complete(struct iop_msg *msg)
 {
-	struct adb_request *req;
 	unsigned long flags;
 
 	local_irq_save(flags);
 
-	req = current_req;
-	if ((adb_iop_state == sending) && req && req->reply_expected) {
+	if (current_req->reply_expected)
 		adb_iop_state = awaiting_reply;
-	}
+	else
+		adb_iop_done();
 
 	local_irq_restore(flags);
 }
-- 
2.26.2