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authorMike Frysinger <michael.frysinger@analog.com>2007-08-05 16:48:08 +0800
committerBryan Wu <bryan.wu@analog.com>2007-08-05 16:48:08 +0800
commitbbf275f092b1b2a9bc8a504500ec387f9ddff859 (patch)
treef1f5874c918e538edb880b60bf45c0d3735c8533 /drivers/serial
parent85a75996edd0e49477cc7c9eb4bac33f02b07685 (diff)
downloadop-kernel-dev-bbf275f092b1b2a9bc8a504500ec387f9ddff859.zip
op-kernel-dev-bbf275f092b1b2a9bc8a504500ec387f9ddff859.tar.gz
Blackfin serial driver: pending a unique anomaly id, tie the break flood issue to ANOMALY_05000230
pending a unique anomaly id, tie the break flood issue to ANOMALY_05000230 as when that was fixed, the fallout also fixed the break flood Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/bfin_5xx.c43
1 files changed, 21 insertions, 22 deletions
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 3f39e18..6f475b6 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -231,12 +231,10 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
{
struct tty_struct *tty = uart->port.info->tty;
unsigned int status, ch, flg;
+ static int in_break = 0;
#ifdef CONFIG_KGDB_UART
struct pt_regs *regs = get_irq_regs();
#endif
-#ifdef BF533_FAMILY
- static int in_break = 0;
-#endif
status = UART_GET_LSR(uart);
ch = UART_GET_CHAR(uart);
@@ -262,29 +260,30 @@ static void bfin_serial_rx_chars(struct bfin_serial_port *uart)
}
}
#endif
-
-#ifdef BF533_FAMILY
- /* The BF533 family of processors have a nice misbehavior where
- * they continuously generate characters for a "single" break.
- * We have to basically ignore this flood until the "next" valid
- * character comes across. All other Blackfin families operate
- * properly though.
- */
- if (in_break) {
- if (ch != 0) {
- in_break = 0;
- ch = UART_GET_CHAR(uart);
- if (bfin_revid() < 5)
+
+ if (ANOMALY_05000230) {
+ /* The BF533 family of processors have a nice misbehavior where
+ * they continuously generate characters for a "single" break.
+ * We have to basically ignore this flood until the "next" valid
+ * character comes across. All other Blackfin families operate
+ * properly though.
+ * Note: While Anomaly 05000230 does not directly address this,
+ * the changes that went in for it also fixed this issue.
+ */
+ if (in_break) {
+ if (ch != 0) {
+ in_break = 0;
+ ch = UART_GET_CHAR(uart);
+ if (bfin_revid() < 5)
+ return;
+ } else
return;
- } else
- return;
+ }
}
-#endif
if (status & BI) {
-#ifdef BF533_FAMILY
- in_break = 1;
-#endif
+ if (ANOMALY_05000230)
+ in_break = 1;
uart->port.icount.brk++;
if (uart_handle_break(&uart->port))
goto ignore_char;
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