[BUG] double unlock in esp32_serial.c

[yamt]

Description / Steps to reproduce the issue

see

nuttx/arch/xtensa/src/esp32/esp32_serial.c

Lines 1813 to 1825 in a14b97b

	spin_unlock_irqrestore(&priv->lock, flags);
	uart_xmitchars(dev);
	#endif
	}
	else
	{
	/* Disable the TX interrupt */
	modifyreg32(UART_INT_ENA_REG(priv->config->id),
	(UART_TX_DONE_INT_ENA | UART_TXFIFO_EMPTY_INT_ENA), 0);
	}
	spin_unlock_irqrestore(&priv->lock, flags);

and find the consecutive spin_unlock_irqrestore calls on the same lock.

On which OS does this issue occur?

[OS: Mac]

What is the version of your OS?

macOS 14.7

NuttX Version

master

Issue Architecture

[Arch: xtensa]

Issue Area

[Area: Drivers]

Verification

• I have verified before submitting the report.

[acassis]

@fdcavalcanti @eren-terzioglu @tmedicci please take a look