From: Mike Frysinger <vapier@gentoo.org>
To: netdev@vger.kernel.org, "David S. Miller" <davem@davemloft.net>
Cc: uclinux-dist-devel@blackfin.uclinux.org,
Graf Yang <graf.yang@analog.com>
Subject: [PATCH] net/irda: bfin_sir: IRDA is not affected by anomaly 05000230
Date: Sun, 23 May 2010 04:00:10 -0400 [thread overview]
Message-ID: <1274601610-882-1-git-send-email-vapier@gentoo.org> (raw)
From: Graf Yang <graf.yang@analog.com>
Anomaly 05000230 (over sampling of the UART STOP bit) applies only when
the peripheral is operating in UART mode. So drop the anomaly handling
in the IRDA code.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
Note: this is fine for 2.6.35 or 2.6.36
drivers/net/irda/bfin_sir.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/irda/bfin_sir.c b/drivers/net/irda/bfin_sir.c
index 911c082..f940dfa 100644
--- a/drivers/net/irda/bfin_sir.c
+++ b/drivers/net/irda/bfin_sir.c
@@ -107,8 +107,12 @@ static int bfin_sir_set_speed(struct bfin_sir_port *port, int speed)
case 57600:
case 115200:
- quot = (port->clk + (8 * speed)) / (16 * speed)\
- - ANOMALY_05000230;
+ /*
+ * IRDA is not affected by anomaly 05000230, so there is no
+ * need to tweak the divisor like he UART driver (which will
+ * slightly speed up the baud rate on us).
+ */
+ quot = (port->clk + (8 * speed)) / (16 * speed);
do {
udelay(utime);
--
1.7.1
next reply other threads:[~2010-05-23 7:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-23 8:00 Mike Frysinger [this message]
2010-05-24 6:54 ` [PATCH] net/irda: bfin_sir: IRDA is not affected by anomaly 05000230 David Miller
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