linux-kernel - [PATCH 2/5] tty/serial: at91: correct buffer size used in DMA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1424933725-16242-3-git-send-email-leilei.zhao@atmel.com>
Date:	Thu, 26 Feb 2015 14:55:22 +0800
From:	Leilei Zhao <leilei.zhao@...el.com>
To:	<nicolas.ferre@...el.com>, <gregkh@...uxfoundation.org>,
	<linux-serial@...r.kernel.org>, <jslaby@...e.cz>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Leilei Zhao <leilei.zhao@...el.com>
Subject: [PATCH 2/5] tty/serial: at91: correct buffer size used in DMA

The buffer size set in DMA is inconsistent with its allocation.
So keep them consistent here. The structure atmel_uart_char is
used in PIO mode with its meaning. But here in DMA, all of the
buffer is treated as general char.

Signed-off-by: Leilei Zhao <leilei.zhao@...el.com>
Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
---
 drivers/tty/serial/atmel_serial.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 460903c..6a4d44d 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1030,7 +1030,7 @@ static int atmel_prepare_rx_dma(struct uart_port *port)
 	BUG_ON((int)ring->buf & ~PAGE_MASK);
 	sg_set_page(&atmel_port->sg_rx,
 		    virt_to_page(ring->buf),
-		    ATMEL_SERIAL_RINGSIZE,
+		    sizeof(struct atmel_uart_char) * ATMEL_SERIAL_RINGSIZE,
 		    (int)ring->buf & ~PAGE_MASK);
 	nent = dma_map_sg(port->dev,
 			  &atmel_port->sg_rx,
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/