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Merge pull request #2048 from hdinc/patch-1
ns16550.cc : fix handling clear rx/tx FIFO requests.
pull/2049/head
Andrew Waterman
9 months ago
committed by
GitHub
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1 changed files with
4 additions and
4 deletions
-
riscv/ns16550.cc
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@ -93,8 +93,8 @@ void ns16550_t::update_interrupt(void) |
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uint8_t interrupts = 0; |
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uint8_t interrupts = 0; |
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/* Handle clear rx */ |
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/* Handle clear rx */ |
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if (lcr & UART_FCR_CLEAR_RCVR) { |
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if (fcr & UART_FCR_CLEAR_RCVR) { |
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lcr &= ~UART_FCR_CLEAR_RCVR; |
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fcr &= ~UART_FCR_CLEAR_RCVR; |
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while (!rx_queue.empty()) { |
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while (!rx_queue.empty()) { |
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rx_queue.pop(); |
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rx_queue.pop(); |
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} |
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} |
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@ -102,8 +102,8 @@ void ns16550_t::update_interrupt(void) |
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} |
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} |
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/* Handle clear tx */ |
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/* Handle clear tx */ |
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if (lcr & UART_FCR_CLEAR_XMIT) { |
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if (fcr & UART_FCR_CLEAR_XMIT) { |
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lcr &= ~UART_FCR_CLEAR_XMIT; |
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fcr &= ~UART_FCR_CLEAR_XMIT; |
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lsr |= UART_LSR_TEMT | UART_LSR_THRE; |
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lsr |= UART_LSR_TEMT | UART_LSR_THRE; |
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} |
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} |
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