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tty: serial: linflexuart: Remove unnecessary '|' operation and add error count

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The '|' operation of status in linflex_rxint is unnecessary,
so it can be removed.

Signed-off-by: Liu Xiang <liuxiang_1999@126.com>
Link: https://lore.kernel.org/r/1604065391-3790-1-git-send-email-liuxiang_1999@126.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Xiang 2020-10-30 21:43:11 +08:00 committed by Greg Kroah-Hartman
parent cbd90e7461
commit 80f510f5fd
1 changed files with 9 additions and 10 deletions
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19
drivers/tty/serial/fsl_linflexuart.c
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@ -252,23 +252,22 @@ static irqreturn_t linflex_rxint(int irq, void *dev_id)
flg = TTY_NORMAL;
sport->icount.rx++;
if (status & (LINFLEXD_UARTSR_BOF | LINFLEXD_UARTSR_SZF |
LINFLEXD_UARTSR_FEF | LINFLEXD_UARTSR_PE)) {
if (status & LINFLEXD_UARTSR_SZF)
status |= LINFLEXD_UARTSR_SZF;
if (status & (LINFLEXD_UARTSR_BOF | LINFLEXD_UARTSR_FEF |
LINFLEXD_UARTSR_PE)) {
if (status & LINFLEXD_UARTSR_BOF)
status |= LINFLEXD_UARTSR_BOF;
sport->icount.overrun++;
if (status & LINFLEXD_UARTSR_FEF) {
if (!rx)
if (!rx) {
brk = true;
status |= LINFLEXD_UARTSR_FEF;
sport->icount.brk++;
} else
sport->icount.frame++;
}
if (status & LINFLEXD_UARTSR_PE)
status |= LINFLEXD_UARTSR_PE;
sport->icount.parity++;
}
writel(status | LINFLEXD_UARTSR_RMB | LINFLEXD_UARTSR_DRFRFE,
sport->membase + UARTSR);
writel(status, sport->membase + UARTSR);
status = readl(sport->membase + UARTSR);
if (brk) {