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tty: serial: fsl_lpuart: correct the count of break characters
[ Upstream commit707f816f25
] The LPUART can't distinguish between a break signal and a framing error, so need to count the break characters if there is a framing error and received data is zero instead of the parity error. Fixes:5541a9bacf
("serial: fsl_lpuart: handle break and make sysrq work") Reviewed-by: Michael Walle <michael@walle.cc> Signed-off-by: Sherry Sun <sherry.sun@nxp.com> Link: https://lore.kernel.org/r/20220725050115.12396-1-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 6 additions and 6 deletions
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@ -990,12 +990,12 @@ static void lpuart32_rxint(struct lpuart_port *sport)
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if (sr & (UARTSTAT_PE | UARTSTAT_OR | UARTSTAT_FE)) {
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if (sr & UARTSTAT_PE) {
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sport->port.icount.parity++;
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} else if (sr & UARTSTAT_FE) {
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if (is_break)
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sport->port.icount.brk++;
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else
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sport->port.icount.parity++;
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} else if (sr & UARTSTAT_FE) {
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sport->port.icount.frame++;
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sport->port.icount.frame++;
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}
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if (sr & UARTSTAT_OR)
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@ -1010,12 +1010,12 @@ static void lpuart32_rxint(struct lpuart_port *sport)
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sr &= sport->port.read_status_mask;
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if (sr & UARTSTAT_PE) {
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flg = TTY_PARITY;
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} else if (sr & UARTSTAT_FE) {
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if (is_break)
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flg = TTY_BREAK;
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else
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flg = TTY_PARITY;
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} else if (sr & UARTSTAT_FE) {
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flg = TTY_FRAME;
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flg = TTY_FRAME;
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}
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if (sr & UARTSTAT_OR)
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