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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-18 21:54:49 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-18 21:54:49 +0100 |
| commit | d110ec3a1e1f522e2e9dfceb9c36d6590c26d2d4 (patch) | |
| tree | 86b2f8f1d22b74b05239525c55bd42e3db6afc03 /arch/mn10300/kernel/gdb-io-serial.c | |
| parent | 343e9099c8152daff20e10d6269edec21da44fc0 (diff) | |
| parent | 55dac3a5553b13891f0ae4bbd11920619b5436d4 (diff) | |
| download | linux-stable-d110ec3a1e1f522e2e9dfceb9c36d6590c26d2d4.tar.gz | |
Merge branch 'linus' into core/rcu
Diffstat (limited to 'arch/mn10300/kernel/gdb-io-serial.c')
| -rw-r--r-- | arch/mn10300/kernel/gdb-io-serial.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/gdb-io-serial.c b/arch/mn10300/kernel/gdb-io-serial.c index 9a6d4e8ebe73..11584c51acd9 100644 --- a/arch/mn10300/kernel/gdb-io-serial.c +++ b/arch/mn10300/kernel/gdb-io-serial.c @@ -99,6 +99,7 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock) try_again: /* pull chars out of the buffer */ ix = gdbstub_rx_outp; + barrier(); if (ix == gdbstub_rx_inp) { if (nonblock) return -EAGAIN; @@ -110,6 +111,7 @@ int gdbstub_io_rx_char(unsigned char *_ch, int nonblock) ch = gdbstub_rx_buffer[ix++]; st = gdbstub_rx_buffer[ix++]; + barrier(); gdbstub_rx_outp = ix & 0x00000fff; if (st & UART_LSR_BI) { |