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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-04-09 13:49:54 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.ibm.com> | 2018-04-29 20:44:23 -0500 |
| commit | 23dc884f8a0f0b52d3e9312b64b9b02fcd8453a1 (patch) | |
| tree | 65ab3459ebf1aecefc49080c5be8f24369a40ba2 /hw/lpc-uart.c | |
| parent | 693a204364b0c6d00ae6daa1721fd5c03a4de74e (diff) | |
| download | skiboot-23dc884f8a0f0b52d3e9312b64b9b02fcd8453a1.zip skiboot-23dc884f8a0f0b52d3e9312b64b9b02fcd8453a1.tar.gz skiboot-23dc884f8a0f0b52d3e9312b64b9b02fcd8453a1.tar.bz2 | |
uart: fix uart_opal_flush to take console lock over uart_con_flush
Cc: Russell Currey <ruscur@russell.cc>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
Diffstat (limited to 'hw/lpc-uart.c')
| -rw-r--r-- | hw/lpc-uart.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/hw/lpc-uart.c b/hw/lpc-uart.c index 3224de9..74a86b1 100644 --- a/hw/lpc-uart.c +++ b/hw/lpc-uart.c @@ -218,7 +218,7 @@ static uint8_t *out_buf; static uint32_t out_buf_prod; static uint32_t out_buf_cons; -/* Asynchronous flush */ +/* Asynchronous flush, uart_lock must be held */ static int64_t uart_con_flush(void) { bool tx_was_full = tx_full; @@ -388,10 +388,16 @@ static int64_t uart_opal_read(int64_t term_number, int64_t *length, static int64_t uart_opal_flush(int64_t term_number) { + int64_t rc; + if (term_number != 0) return OPAL_PARAMETER; - return uart_con_flush(); + lock(&uart_lock); + rc = uart_con_flush(); + unlock(&uart_lock); + + return rc; } static void __uart_do_poll(u8 trace_ctx) |