On 8/13/2014 7:33 PM, Frank Rowand wrote:
> On 8/12/2014 5:23 PM, Stephen Boyd wrote:
>> On 08/06/14 17:16, Frank Rowand wrote:
< snip >
> The patches you sent are a little hard to read since they modify further code
> that my patch modified. So I have redone your patches, as if my patch was
> not previously applied. Hopefully I did not make any mistakes there. I will
> reply to this email with each of your redone patches.
Stephen's patch alternative number 2:
---
drivers/tty/serial/msm_serial.c | 41 +++++++++++++++++++++++++++-------------
1 file changed, 28 insertions(+), 13 deletions(-)
Index: b/drivers/tty/serial/msm_serial.c
===================================================================
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -125,25 +125,40 @@ static void handle_rx_dm(struct uart_por
port->icount.rx += count;
while (count > 0) {
- unsigned int c;
+ unsigned char buf[4];
+ int sysrq, r_count, i;
sr = msm_read(port, UART_SR);
if ((sr & UART_SR_RX_READY) == 0) {
msm_port->old_snap_state -= count;
break;
}
- c = msm_read(port, UARTDM_RF);
- if (sr & UART_SR_RX_BREAK) {
- port->icount.brk++;
- if (uart_handle_break(port))
- continue;
- } else if (sr & UART_SR_PAR_FRAME_ERR)
- port->icount.frame++;
-
- /* TODO: handle sysrq */
- tty_insert_flip_string(tport, (char *)&c,
- (count > 4) ? 4 : count);
- count -= 4;
+ readsl(port->membase + UARTDM_RF, buf, 1);
+
+ r_count = min_t(int, count, sizeof(buf));
+
+ for (i = 0; i < r_count; i++) {
+ char flag = TTY_NORMAL;
+
+ if (sr & UART_SR_RX_BREAK) {
+ if (buf[i] == 0) {
+ port->icount.brk++;
+ flag = TTY_BREAK;
+ if (uart_handle_break(port))
+ continue;
+ }
+ }
+
+ if (!(port->read_status_mask & UART_SR_RX_BREAK))
+ flag = TTY_NORMAL;
+
+ spin_unlock(&port->lock);
+ sysrq = uart_handle_sysrq_char(port, buf[i]);
+ spin_lock(&port->lock);
+ if (!sysrq)
+ tty_insert_flip_char(tport, buf[i], flag);
+ }
+ count -= r_count;
}
spin_unlock(&port->lock);
--
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