Commit fe418231 authored by Christopher Alexander Tobias Schulze's avatar Christopher Alexander Tobias Schulze Committed by David S. Miller

sunsab: Fix detection of BREAK on sunsab serial console

Fix detection of BREAK on sunsab serial console: BREAK detection was only
performed when there were also serial characters received simultaneously.
To handle all BREAKs correctly, the check for BREAK and the corresponding
call to uart_handle_break() must also be done if count == 0, therefore
duplicate this code fragment and pull it out of the loop over the received
characters.

Patch applies to 3.16-rc6.
Signed-off-by: default avatarChristopher Alexander Tobias Schulze <cat.schulze@alice-dsl.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5cdceab3
...@@ -157,6 +157,15 @@ receive_chars(struct uart_sunsab_port *up, ...@@ -157,6 +157,15 @@ receive_chars(struct uart_sunsab_port *up,
(up->port.line == up->port.cons->index)) (up->port.line == up->port.cons->index))
saw_console_brk = 1; saw_console_brk = 1;
if (count == 0) {
if (unlikely(stat->sreg.isr1 & SAB82532_ISR1_BRK)) {
stat->sreg.isr0 &= ~(SAB82532_ISR0_PERR |
SAB82532_ISR0_FERR);
up->port.icount.brk++;
uart_handle_break(&up->port);
}
}
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
unsigned char ch = buf[i], flag; unsigned char ch = buf[i], flag;
......
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