linux-kernel - [PATCH v3 2/2] platform/surface: aggregator: Use serdev_acpi_get_uart

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Message-Id: <20210806111736.66591-2-andriy.shevchenko@linux.intel.com>
Date:   Fri,  6 Aug 2021 14:17:36 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org
Cc:     Mark Gross <mgross@...ux.intel.com>, Rob Herring <robh@...nel.org>,
        Jiri Slaby <jirislaby@...nel.org>
Subject: [PATCH v3 2/2] platform/surface: aggregator: Use serdev_acpi_get_uart_resource() helper

serdev provides a generic helper to get UART Serial Bus resources.
Use it instead of an open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Reviewed-by: Maximilian Luz <luzmaximilian@...il.com>
---
v3: no changes
 drivers/platform/surface/aggregator/core.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/platform/surface/aggregator/core.c b/drivers/platform/surface/aggregator/core.c
index 279d9df19c01..c61bbeeec2df 100644
--- a/drivers/platform/surface/aggregator/core.c
+++ b/drivers/platform/surface/aggregator/core.c
@@ -301,20 +301,13 @@ static acpi_status ssam_serdev_setup_via_acpi_crs(struct acpi_resource *rsc,
 						  void *ctx)
 {
 	struct serdev_device *serdev = ctx;
-	struct acpi_resource_common_serialbus *serial;
 	struct acpi_resource_uart_serialbus *uart;
 	bool flow_control;
 	int status = 0;
 
-	if (rsc->type != ACPI_RESOURCE_TYPE_SERIAL_BUS)
+	if (!serdev_acpi_get_uart_resource(rsc, &uart))
 		return AE_OK;
 
-	serial = &rsc->data.common_serial_bus;
-	if (serial->type != ACPI_RESOURCE_SERIAL_TYPE_UART)
-		return AE_OK;
-
-	uart = &rsc->data.uart_serial_bus;
-
 	/* Set up serdev device. */
 	serdev_device_set_baudrate(serdev, uart->default_baud_rate);
 
-- 
2.30.2