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author | Mike Frysinger <michael.frysinger@analog.com> | 2007-08-05 16:48:08 +0800 |
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committer | Bryan Wu <bryan.wu@analog.com> | 2007-08-05 16:48:08 +0800 |
commit | bbf275f092b1b2a9bc8a504500ec387f9ddff859 (patch) | |
tree | f1f5874c918e538edb880b60bf45c0d3735c8533 | |
parent | 85a75996edd0e49477cc7c9eb4bac33f02b07685 (diff) | |
download | op-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>
-rw-r--r-- | drivers/serial/bfin_5xx.c | 43 |
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; |