Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1207595
| From | Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/3] serial: 8250: move rx_running out of the bitfield |
| Date | 2015-08-14 18:10 +0200 |
| Message-ID | <pXpIm-6Yn-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
From: John Ogness <john.ogness@linutronix.de>
That bitfield is modified by read + or + write operation. If someone
sets any of the other two bits it might render the lock useless.
While at it, remove other bitfields as well to avoid more such
errors.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/tty/serial/8250/8250.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index c43f74c53cd9..a407757dcecc 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -42,9 +42,9 @@ struct uart_8250_dma {
size_t rx_size;
size_t tx_size;
- unsigned char tx_running:1;
- unsigned char tx_err: 1;
- unsigned char rx_running:1;
+ unsigned char tx_running;
+ unsigned char tx_err;
+ unsigned char rx_running;
};
struct old_serial_port {
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH 1/3] serial: 8250: move rx_running out of the bitfield Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2015-08-14 18:10 +0200 [PATCH 2/3] serial: 8250_omap: check how many bytes were injected Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2015-08-14 18:10 +0200 [RFC 3/3] serial: 8250_omap: try to avoid IER_RDI with DMA Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2015-08-14 18:10 +0200
csiph-web