[coreboot-gerrit] Change in coreboot[master]: drivers/uart: Fix control flow DEADCODE issue

[John Zhao (Code Review)]

John Zhao has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46506 )

Change subject: drivers/uart: Fix control flow DEADCODE issue
......................................................................

drivers/uart: Fix control flow DEADCODE issue

Coverity detects the irq_gpio_index DEADCODE which is initialized as -1.
This change updates irq_gpio_index based on irq_gpio.pin_count which
differentiates gpio irq or pirq.

Found-by: Coverity CID 1429983
TEST=None

Signed-off-by: John Zhao 
Change-Id: I79f85f05b78e5569615ae4c4f7c81cc85c3999c9
---
M src/drivers/uart/acpi/acpi.c
1 file changed, 3 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/06/46506/1

diff --git a/src/drivers/uart/acpi/acpi.c b/src/drivers/uart/acpi/acpi.c
index f9d9d8f..df26f4e 100644
--- a/src/drivers/uart/acpi/acpi.c
+++ b/src/drivers/uart/acpi/acpi.c
@@ -73,8 +73,10 @@
    acpi_device_write_uart(&config->uart);

/* Use either Interrupt() or GpioInt() */
-	if (config->irq_gpio.pin_count)
+	if (config->irq_gpio.pin_count) {
    	acpi_device_write_gpio(&config->irq_gpio);
+		irq_gpio_index++;
+	}
    else
    	acpi_device_write_interrupt(&config->irq);