linux-kernel - [PATCH v2 08/11] spi: pxa2xx: Remove superflous check for Intel Atom SoCs

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Message-ID: <20240530151117.1130792-9-andriy.shevchenko@linux.intel.com>
Date: Thu, 30 May 2024 18:10:04 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Mark Brown <broonie@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Cc: Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>
Subject: [PATCH v2 08/11] spi: pxa2xx: Remove superflous check for Intel Atom SoCs

pxa2xx_spi_fw_translate_cs() checks for the ACPI companion device
presence along with the SSP type. But the SSP type is uniquely
determines the case. Hence remove the superflous check.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/spi/spi-pxa2xx.c | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 9724d9455837..3c03a8cd9ee6 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -1393,23 +1393,19 @@ static int pxa2xx_spi_fw_translate_cs(struct spi_controller *controller,
 {
 	struct driver_data *drv_data = spi_controller_get_devdata(controller);
 
-	if (has_acpi_companion(drv_data->ssp->dev)) {
-		switch (drv_data->ssp_type) {
-		/*
-		 * For Atoms the ACPI DeviceSelection used by the Windows
-		 * driver starts from 1 instead of 0 so translate it here
-		 * to match what Linux expects.
-		 */
-		case LPSS_BYT_SSP:
-		case LPSS_BSW_SSP:
-			return cs - 1;
+	switch (drv_data->ssp_type) {
+	/*
+	 * For some of Intel Atoms the ACPI DeviceSelection used by the Windows
+	 * driver starts from 1 instead of 0 so translate it here to match what
+	 * Linux expects.
+	 */
+	case LPSS_BYT_SSP:
+	case LPSS_BSW_SSP:
+		return cs - 1;
 
-		default:
-			break;
-		}
+	default:
+		return cs;
 	}
-
-	return cs;
 }
 
 static size_t pxa2xx_spi_max_dma_transfer_size(struct spi_device *spi)
-- 
2.43.0.rc1.1336.g36b5255a03ac