Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c
index 79fc394..4e1ccd4 100644
--- a/drivers/spi/spi-ep93xx.c
+++ b/drivers/spi/spi-ep93xx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for Cirrus Logic EP93xx SPI controller.
*
@@ -10,10 +11,6 @@
* For more information about the SPI controller see documentation on Cirrus
* Logic web site:
* http://www.cirrus.com/en/pubs/manual/EP93xx_Users_Guide_UM1.pdf
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
*/
#include <linux/io.h>
@@ -28,7 +25,6 @@
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/scatterlist.h>
-#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/platform_data/dma-ep93xx.h>
@@ -652,7 +648,6 @@
struct resource *res;
int irq;
int error;
- int i;
info = dev_get_platdata(&pdev->dev);
if (!info) {
@@ -661,10 +656,8 @@
}
irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- dev_err(&pdev->dev, "failed to get irq resources\n");
+ if (irq < 0)
return -EBUSY;
- }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -676,6 +669,7 @@
if (!master)
return -ENOMEM;
+ master->use_gpio_descriptors = true;
master->prepare_transfer_hardware = ep93xx_spi_prepare_hardware;
master->unprepare_transfer_hardware = ep93xx_spi_unprepare_hardware;
master->prepare_message = ep93xx_spi_prepare_message;
@@ -683,31 +677,11 @@
master->bus_num = pdev->id;
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16);
-
- master->num_chipselect = info->num_chipselect;
- master->cs_gpios = devm_kcalloc(&master->dev,
- master->num_chipselect, sizeof(int),
- GFP_KERNEL);
- if (!master->cs_gpios) {
- error = -ENOMEM;
- goto fail_release_master;
- }
-
- for (i = 0; i < master->num_chipselect; i++) {
- master->cs_gpios[i] = info->chipselect[i];
-
- if (!gpio_is_valid(master->cs_gpios[i]))
- continue;
-
- error = devm_gpio_request_one(&pdev->dev, master->cs_gpios[i],
- GPIOF_OUT_INIT_HIGH,
- "ep93xx-spi");
- if (error) {
- dev_err(&pdev->dev, "could not request cs gpio %d\n",
- master->cs_gpios[i]);
- goto fail_release_master;
- }
- }
+ /*
+ * The SPI core will count the number of GPIO descriptors to figure
+ * out the number of chip selects available on the platform.
+ */
+ master->num_chipselect = 0;
platform_set_drvdata(pdev, master);