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| author | Philippe Mathieu-Daudé | 2019-01-21 11:23:10 +0100 |
|---|---|---|
| committer | Peter Maydell | 2019-01-21 11:23:10 +0100 |
| commit | 4076618095099702e0a29e47aac30b4931a1f54b (patch) | |
| tree | fa4e0a7e945819731574509fa5a298b3ad959903 /hw/char | |
| parent | Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20190118' into staging (diff) | |
| download | qemu-4076618095099702e0a29e47aac30b4931a1f54b.tar.gz qemu-4076618095099702e0a29e47aac30b4931a1f54b.tar.xz qemu-4076618095099702e0a29e47aac30b4931a1f54b.zip | |
hw/char/stm32f2xx_usart: Do not update data register when device is disabled
When the device is disabled, the internal circuitry keeps the data
register loaded and doesn't update it.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20190104182057.8778-1-philmd@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/char')
| -rw-r--r-- | hw/char/stm32f2xx_usart.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/hw/char/stm32f2xx_usart.c b/hw/char/stm32f2xx_usart.c index f3363a2952..10392c70e2 100644 --- a/hw/char/stm32f2xx_usart.c +++ b/hw/char/stm32f2xx_usart.c @@ -53,14 +53,13 @@ static void stm32f2xx_usart_receive(void *opaque, const uint8_t *buf, int size) { STM32F2XXUsartState *s = opaque; - s->usart_dr = *buf; - if (!(s->usart_cr1 & USART_CR1_UE && s->usart_cr1 & USART_CR1_RE)) { /* USART not enabled - drop the chars */ DB_PRINT("Dropping the chars\n"); return; } + s->usart_dr = *buf; s->usart_sr |= USART_SR_RXNE; if (s->usart_cr1 & USART_CR1_RXNEIE) { |