linux-kernel - [PATCH 5.5 248/399] misc: xilinx_sdfec: fix xsdfec

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Date:   Fri, 21 Feb 2020 08:39:33 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Derek Kiernan <derek.kiernan@...inx.com>,
        Dragan Cvetic <dragan.cvetic@...inx.com>,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.5 248/399] misc: xilinx_sdfec: fix xsdfec_poll()s return type

From: Luc Van Oostenryck <luc.vanoostenryck@...il.com>

[ Upstream commit fa4e7fc1386078edcfddd8848cb0374f4af74fe7 ]

xsdfec_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: Derek Kiernan <derek.kiernan@...inx.com>
CC: Dragan Cvetic <dragan.cvetic@...inx.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Acked-by: Dragan Cvetic <dragan.cvetic@...inx.com>
Link: https://lore.kernel.org/r/20191209213655.57985-1-luc.vanoostenryck@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/misc/xilinx_sdfec.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/xilinx_sdfec.c b/drivers/misc/xilinx_sdfec.c
index 11835969e9828..48ba7e02bed72 100644
--- a/drivers/misc/xilinx_sdfec.c
+++ b/drivers/misc/xilinx_sdfec.c
@@ -1025,25 +1025,25 @@ static long xsdfec_dev_compat_ioctl(struct file *file, unsigned int cmd,
 }
 #endif
 
-static unsigned int xsdfec_poll(struct file *file, poll_table *wait)
+static __poll_t xsdfec_poll(struct file *file, poll_table *wait)
 {
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 	struct xsdfec_dev *xsdfec;
 
 	xsdfec = container_of(file->private_data, struct xsdfec_dev, miscdev);
 
 	if (!xsdfec)
-		return POLLNVAL | POLLHUP;
+		return EPOLLNVAL | EPOLLHUP;
 
 	poll_wait(file, &xsdfec->waitq, wait);
 
 	/* XSDFEC ISR detected an error */
 	spin_lock_irqsave(&xsdfec->error_data_lock, xsdfec->flags);
 	if (xsdfec->state_updated)
-		mask |= POLLIN | POLLPRI;
+		mask |= EPOLLIN | EPOLLPRI;
 
 	if (xsdfec->stats_updated)
-		mask |= POLLIN | POLLRDNORM;
+		mask |= EPOLLIN | EPOLLRDNORM;
 	spin_unlock_irqrestore(&xsdfec->error_data_lock, xsdfec->flags);
 
 	return mask;
-- 
2.20.1