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serial: mchp_xec: Fix uart_xec_irq_tx_complete function #77834

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Merged
mmahadevan108 merged 1 commit into from
Nov 8, 2024
Merged

serial: mchp_xec: Fix uart_xec_irq_tx_complete function #77834

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9 changes: 7 additions & 2 deletions drivers/serial/uart_mchp_xec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -747,10 +747,15 @@ static int uart_xec_irq_tx_complete(const struct device *dev)
const struct uart_xec_device_config * const dev_cfg = dev->config;
struct uart_xec_dev_data *dev_data = dev->data;
struct uart_regs *regs = dev_cfg->regs;
int ret;
k_spinlock_key_t key = k_spin_lock(&dev_data->lock);

int ret = ((regs->LSR & (LSR_TEMT | LSR_THRE))
== (LSR_TEMT | LSR_THRE)) ? 1 : 0;
if ((regs->IER & IER_TBE) ||
((regs->LSR & (LSR_TEMT | LSR_THRE)) != (LSR_TEMT | LSR_THRE))) {
ret = 0;
} else {
ret = 1;
}

k_spin_unlock(&dev_data->lock, key);

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