1 files changed, 45 insertions, 75 deletions

diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 8779bbaa6b69..b5ea058ed467 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/drivers/mmc/host/pxa.c - PXA MMCI driver
  *
  *  Copyright (C) 2003 Russell King, All Rights Reserved.
  *
- * 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.
- *
  *  This hardware is really sick:
  *   - No way to clear interrupts.
  *   - Have to turn off the clock whenever we touch the device.
@@ -33,11 +30,10 @@
 #include <linux/gpio/consumer.h>
 #include <linux/gfp.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/soc/pxa/cpu.h>
 
-#include <asm/sizes.h>
+#include <linux/sizes.h>
 
-#include <mach/hardware.h>
 #include <linux/platform_data/mmc-pxamci.h>
 
 #include "pxamci.h"
@@ -162,7 +158,7 @@ static void pxamci_dma_irq(void *param);
 static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
 {
 	struct dma_async_tx_descriptor *tx;
-	enum dma_data_direction direction;
+	enum dma_transfer_direction direction;
 	struct dma_slave_config	config;
 	struct dma_chan *chan;
 	unsigned int nob = data->blocks;
@@ -615,16 +611,13 @@ static int pxamci_probe(struct platform_device *pdev)
 	struct resource *r;
 	int ret, irq;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
 		return irq;
 
-	mmc = mmc_alloc_host(sizeof(struct pxamci_host), dev);
-	if (!mmc) {
-		ret = -ENOMEM;
-		goto out;
-	}
+	mmc = devm_mmc_alloc_host(dev, sizeof(*host));
+	if (!mmc)
+		return -ENOMEM;
 
 	mmc->ops = &pxamci_ops;
 
@@ -659,11 +652,9 @@ static int pxamci_probe(struct platform_device *pdev)
 	host->clkrt = CLKRT_OFF;
 
 	host->clk = devm_clk_get(dev, NULL);
-	if (IS_ERR(host->clk)) {
-		ret = PTR_ERR(host->clk);
-		host->clk = NULL;
-		goto out;
-	}
+	if (IS_ERR(host->clk))
+		return dev_err_probe(dev, PTR_ERR(host->clk),
+					"Failed to acquire clock\n");
 
 	host->clkrate = clk_get_rate(host->clk);
 
@@ -688,14 +679,12 @@ static int pxamci_probe(struct platform_device *pdev)
 	}
 
 	spin_lock_init(&host->lock);
-	host->res = r;
 	host->imask = MMC_I_MASK_ALL;
 
-	host->base = devm_ioremap_resource(dev, r);
-	if (IS_ERR(host->base)) {
-		ret = PTR_ERR(host->base);
-		goto out;
-	}
+	host->base = devm_platform_get_and_ioremap_resource(pdev, 0, &r);
+	if (IS_ERR(host->base))
+		return PTR_ERR(host->base);
+	host->res = r;
 
 	/*
 	 * Ensure that the host controller is shut down, and setup
@@ -709,50 +698,43 @@ static int pxamci_probe(struct platform_device *pdev)
 	ret = devm_request_irq(dev, irq, pxamci_irq, 0,
 			       DRIVER_NAME, host);
 	if (ret)
-		goto out;
+		return ret;
 
 	platform_set_drvdata(pdev, mmc);
 
-	host->dma_chan_rx = dma_request_slave_channel(dev, "rx");
-	if (host->dma_chan_rx == NULL) {
-		dev_err(dev, "unable to request rx dma channel\n");
-		ret = -ENODEV;
-		goto out;
-	}
+	host->dma_chan_rx = devm_dma_request_chan(dev, "rx");
+	if (IS_ERR(host->dma_chan_rx))
+		return dev_err_probe(dev, PTR_ERR(host->dma_chan_rx),
+				     "unable to request rx dma channel\n");
 
-	host->dma_chan_tx = dma_request_slave_channel(dev, "tx");
-	if (host->dma_chan_tx == NULL) {
-		dev_err(dev, "unable to request tx dma channel\n");
-		ret = -ENODEV;
-		goto out;
-	}
+
+	host->dma_chan_tx = devm_dma_request_chan(dev, "tx");
+	if (IS_ERR(host->dma_chan_tx))
+		return dev_err_probe(dev, PTR_ERR(host->dma_chan_tx),
+					"unable to request tx dma channel\n");
 
 	if (host->pdata) {
 		host->detect_delay_ms = host->pdata->detect_delay_ms;
 
 		host->power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
-		if (IS_ERR(host->power)) {
-			dev_err(dev, "Failed requesting gpio_power\n");
-			goto out;
-		}
+		if (IS_ERR(host->power))
+			return dev_err_probe(dev, PTR_ERR(host->power),
+						"Failed requesting gpio_power\n");
 
 		/* FIXME: should we pass detection delay to debounce? */
-		ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0, NULL);
-		if (ret && ret != -ENOENT) {
-			dev_err(dev, "Failed requesting gpio_cd\n");
-			goto out;
-		}
+		ret = mmc_gpiod_request_cd(mmc, "cd", 0, false, 0);
+		if (ret && ret != -ENOENT)
+			return dev_err_probe(dev, ret, "Failed requesting gpio_cd\n");
 
-		ret = mmc_gpiod_request_ro(mmc, "wp", 0, false, 0, NULL);
-		if (ret && ret != -ENOENT) {
-			dev_err(dev, "Failed requesting gpio_ro\n");
-			goto out;
-		}
-		if (!ret) {
+		if (!host->pdata->gpio_card_ro_invert)
+			mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
+
+		ret = mmc_gpiod_request_ro(mmc, "wp", 0, 0);
+		if (ret && ret != -ENOENT)
+			return dev_err_probe(dev, ret, "Failed requesting gpio_ro\n");
+
+		if (!ret)
 			host->use_ro_gpio = true;
-			mmc->caps2 |= host->pdata->gpio_card_ro_invert ?
-				0 : MMC_CAP2_RO_ACTIVE_HIGH;
-		}
 
 		if (host->pdata->init)
 			host->pdata->init(dev, pxamci_detect_irq, mmc);
@@ -763,23 +745,16 @@ static int pxamci_probe(struct platform_device *pdev)
 			dev_warn(dev, "gpio_ro and get_ro() both defined\n");
 	}
 
-	mmc_add_host(mmc);
-
-	return 0;
-
-out:
-	if (host) {
-		if (host->dma_chan_rx)
-			dma_release_channel(host->dma_chan_rx);
-		if (host->dma_chan_tx)
-			dma_release_channel(host->dma_chan_tx);
+	ret = mmc_add_host(mmc);
+	if (ret) {
+		if (host->pdata && host->pdata->exit)
+			host->pdata->exit(dev, mmc);
 	}
-	if (mmc)
-		mmc_free_host(mmc);
+
 	return ret;
 }
 
-static int pxamci_remove(struct platform_device *pdev)
+static void pxamci_remove(struct platform_device *pdev)
 {
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 
@@ -798,13 +773,7 @@ static int pxamci_remove(struct platform_device *pdev)
 
 		dmaengine_terminate_all(host->dma_chan_rx);
 		dmaengine_terminate_all(host->dma_chan_tx);
-		dma_release_channel(host->dma_chan_rx);
-		dma_release_channel(host->dma_chan_tx);
-
-		mmc_free_host(mmc);
 	}
-
-	return 0;
 }
 
 static struct platform_driver pxamci_driver = {
@@ -812,6 +781,7 @@ static struct platform_driver pxamci_driver = {
 	.remove		= pxamci_remove,
 	.driver		= {
 		.name	= DRIVER_NAME,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 		.of_match_table = of_match_ptr(pxa_mmc_dt_ids),
 	},
 };