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From: Dan Carpenter <dan.carpenter@oracle.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Alexander Sverdlin <alexander.sverdlin@gmail.com>,
	Johan Hovold <johan@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-serial@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH] serial: 8250_omap: fix a timeout loop condition
Date: Thu, 29 Apr 2021 10:19:22 +0300	[thread overview]
Message-ID: <YIpd+kOpXKMpEXPf@mwanda> (raw)

This loop ends on -1 so the error message will never be printed.

Fixes: 4bcf59a5dea0 ("serial: 8250: 8250_omap: Account for data in flight during DMA teardown")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/tty/serial/8250/8250_omap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 8ac11eaeca51..c06631ced414 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -813,7 +813,7 @@ static void __dma_rx_do_complete(struct uart_8250_port *p)
 			       poll_count--)
 				cpu_relax();
 
-			if (!poll_count)
+			if (poll_count == -1)
 				dev_err(p->port.dev, "teardown incomplete\n");
 		}
 	}
-- 
2.30.2


             reply	other threads:[~2021-04-29  7:21 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-29  7:19 Dan Carpenter [this message]
2021-04-29  9:23 ` [PATCH] serial: 8250_omap: fix a timeout loop condition Alexander Sverdlin
2021-04-29 11:08 ` Andy Shevchenko
2021-04-29 13:02   ` Dan Carpenter
2021-04-30  8:46     ` Andy Shevchenko
2021-04-30  8:47       ` Andy Shevchenko
2021-04-30 11:41       ` Dan Carpenter
2021-04-30 12:53         ` Andy Shevchenko
2021-04-30 13:33           ` Dan Carpenter
2021-04-30 14:21             ` Andy Shevchenko
2021-05-03  6:54               ` Dan Carpenter
2021-05-03  9:51                 ` Andy Shevchenko
2021-05-14  8:00                   ` Dan Carpenter

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