linux-kernel - [PATCH] aspeed: fix snoop_file

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Message-Id: <20191120000647.30551-1-luc.vanoostenryck@gmail.com>
Date:   Wed, 20 Nov 2019 01:06:47 +0100
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        linux-aspeed@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] aspeed: fix snoop_file_poll()'s return type

snoop_file_poll() is defined as returning 'unsigned int' but the
.poll method is declared as returning '__poll_t', a bitwise type.

Fix this by using the proper return type and using the EPOLL
constants instead of the POLL ones, as required for __poll_t.

CC: Joel Stanley <joel@....id.au>
CC: Andrew Jeffery <andrew@...id.au>
CC: linux-aspeed@...ts.ozlabs.org
CC: linux-arm-kernel@...ts.infradead.org
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
---
 drivers/soc/aspeed/aspeed-lpc-snoop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c
index 48f7ac238861..f3d8d53ab84d 100644
--- a/drivers/soc/aspeed/aspeed-lpc-snoop.c
+++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c
@@ -97,13 +97,13 @@ static ssize_t snoop_file_read(struct file *file, char __user *buffer,
 	return ret ? ret : copied;
 }
 
-static unsigned int snoop_file_poll(struct file *file,
+static __poll_t snoop_file_poll(struct file *file,
 				    struct poll_table_struct *pt)
 {
 	struct aspeed_lpc_snoop_channel *chan = snoop_file_to_chan(file);
 
 	poll_wait(file, &chan->wq, pt);
-	return !kfifo_is_empty(&chan->fifo) ? POLLIN : 0;
+	return !kfifo_is_empty(&chan->fifo) ? EPOLLIN : 0;
 }
 
 static const struct file_operations snoop_fops = {
-- 
2.24.0