mmc: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/android-goldfish.c

@@ -546,8 +546,6 @@ static int goldfish_mmc_remove(struct platform_device *pdev)
 {
 	struct goldfish_mmc_host *host = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	BUG_ON(host == NULL);
 
 	mmc_remove_host(host->mmc);

drivers/mmc/host/atmel-mci.c

@@ -2475,8 +2475,6 @@ static int __exit atmci_remove(struct platform_device *pdev)
 	struct atmel_mci	*host = platform_get_drvdata(pdev);
 	unsigned int		i;
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (host->buffer)
 		dma_free_coherent(&pdev->dev, host->buf_size,
 		                  host->buffer, host->buf_phys_addr);

drivers/mmc/host/au1xmmc.c

@@ -1149,7 +1149,6 @@ static int au1xmmc_remove(struct platform_device *pdev)
 		kfree(host->ioarea);
 
 		mmc_free_host(host->mmc);
-		platform_set_drvdata(pdev, NULL);
 	}
 	return 0;
 }

drivers/mmc/host/bfin_sdh.c

@@ -621,8 +621,6 @@ static int sdh_remove(struct platform_device *pdev)
 {
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct sdh_host *host = mmc_priv(mmc);
 

drivers/mmc/host/davinci_mmc.c

@@ -1406,7 +1406,6 @@ static int __exit davinci_mmcsd_remove(struct platform_device *pdev)
 {
 	struct mmc_davinci_host *host = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
 	if (host) {
 		mmc_davinci_cpufreq_deregister(host);
 

drivers/mmc/host/dw_mmc-pltfm.c

@@ -72,7 +72,6 @@ static int dw_mci_pltfm_remove(struct platform_device *pdev)
 {
 	struct dw_mci *host = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
 	dw_mci_remove(host);
 	return 0;
 }

drivers/mmc/host/jz4740_mmc.c

@@ -932,7 +932,6 @@ err_release_mem_region:
 err_clk_put:
 	clk_put(host->clk);
 err_free_host:
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(mmc);
 
 	return ret;
@@ -960,7 +959,6 @@ static int jz4740_mmc_remove(struct platform_device *pdev)
 
 	clk_put(host->clk);
 
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(host->mmc);
 
 	return 0;

drivers/mmc/host/mvsdio.c

@@ -827,7 +827,6 @@ static int __exit mvsd_remove(struct platform_device *pdev)
 		clk_disable_unprepare(host->clk);
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/mmc/host/mxcmmc.c

@@ -1219,8 +1219,6 @@ static int mxcmci_remove(struct platform_device *pdev)
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	struct mxcmci_host *host = mmc_priv(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	mmc_remove_host(mmc);
 
 	if (host->vcc)

drivers/mmc/host/mxs-mmc.c

@@ -709,8 +709,6 @@ static int mxs_mmc_remove(struct platform_device *pdev)
 
 	mmc_remove_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (ssp->dmach)
 		dma_release_channel(ssp->dmach);
 

drivers/mmc/host/omap.c

@@ -1500,8 +1500,6 @@ static int mmc_omap_remove(struct platform_device *pdev)
 	struct mmc_omap_host *host = platform_get_drvdata(pdev);
 	int i;
 
-	platform_set_drvdata(pdev, NULL);
-
 	BUG_ON(host == NULL);
 
 	for (i = 0; i < host->nr_slots; i++)

drivers/mmc/host/omap_hsmmc.c

@@ -2047,7 +2047,6 @@ err_irq:
 	}
 err1:
 	iounmap(host->base);
-	platform_set_drvdata(pdev, NULL);
 	mmc_free_host(mmc);
 err_alloc:
 	omap_hsmmc_gpio_free(pdata);
@@ -2093,7 +2092,6 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res)
 		release_mem_region(res->start, resource_size(res));
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/mmc/host/pxamci.c

@@ -834,8 +834,6 @@ static int pxamci_remove(struct platform_device *pdev)
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 	int gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct pxamci_host *host = mmc_priv(mmc);
 

drivers/mmc/host/rtsx_pci_sdmmc.c

@@ -1316,8 +1316,6 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
 	mmc_remove_host(mmc);
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	dev_dbg(&(pdev->dev),
 		": Realtek PCI-E SDMMC controller has been removed\n");
 

drivers/mmc/host/sdhci-acpi.c

@@ -262,7 +262,6 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 	return 0;
 
 err_free:
-	platform_set_drvdata(pdev, NULL);
 	sdhci_free_host(c->host);
 	return err;
 }
@@ -281,7 +280,6 @@ static int sdhci_acpi_remove(struct platform_device *pdev)
 
 	dead = (sdhci_readl(c->host, SDHCI_INT_STATUS) == ~0);
 	sdhci_remove_host(c->host, dead);
-	platform_set_drvdata(pdev, NULL);
 	sdhci_free_host(c->host);
 
 	return 0;

drivers/mmc/host/sdhci-pltfm.c

@@ -200,7 +200,6 @@ void sdhci_pltfm_free(struct platform_device *pdev)
 	iounmap(host->ioaddr);
 	release_mem_region(iomem->start, resource_size(iomem));
 	sdhci_free_host(host);
-	platform_set_drvdata(pdev, NULL);
 }
 EXPORT_SYMBOL_GPL(sdhci_pltfm_free);
 

drivers/mmc/host/sdhci-pxav2.c

@@ -253,8 +253,6 @@ static int sdhci_pxav2_remove(struct platform_device *pdev)
 	sdhci_pltfm_free(pdev);
 	kfree(pxa);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/mmc/host/sdhci-pxav3.c

@@ -339,8 +339,6 @@ static int sdhci_pxav3_remove(struct platform_device *pdev)
 	sdhci_pltfm_free(pdev);
 	kfree(pxa);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/mmc/host/sdhci-s3c.c

@@ -745,7 +745,6 @@ static int sdhci_s3c_remove(struct platform_device *pdev)
 	clk_disable_unprepare(sc->clk_io);
 
 	sdhci_free_host(host);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/mmc/host/sdhci-spear.c

@@ -258,7 +258,6 @@ static int sdhci_probe(struct platform_device *pdev)
 	return 0;
 
 set_drvdata:
-	platform_set_drvdata(pdev, NULL);
 	sdhci_remove_host(host, 1);
 free_host:
 	sdhci_free_host(host);
@@ -278,7 +277,6 @@ static int sdhci_remove(struct platform_device *pdev)
 	int dead = 0;
 	u32 scratch;
 
-	platform_set_drvdata(pdev, NULL);
 	scratch = readl(host->ioaddr + SDHCI_INT_STATUS);
 	if (scratch == (u32)-1)
 		dead = 1;

drivers/mmc/host/sh_mmcif.c

@@ -1501,8 +1501,6 @@ static int sh_mmcif_remove(struct platform_device *pdev)
 	if (irq[1] >= 0)
 		free_irq(irq[1], host);
 
-	platform_set_drvdata(pdev, NULL);
-
 	clk_disable(host->hclk);
 	mmc_free_host(host->mmc);
 	pm_runtime_put_sync(&pdev->dev);

drivers/mmc/host/tmio_mmc.c

@@ -112,8 +112,6 @@ static int tmio_mmc_remove(struct platform_device *pdev)
 	const struct mfd_cell *cell = mfd_get_cell(pdev);
 	struct mmc_host *mmc = platform_get_drvdata(pdev);
 
-	platform_set_drvdata(pdev, NULL);
-
 	if (mmc) {
 		struct tmio_mmc_host *host = mmc_priv(mmc);
 		free_irq(platform_get_irq(pdev, 0), host);

drivers/mmc/host/wmt-sdmmc.c

@@ -927,8 +927,6 @@ static int wmt_mci_remove(struct platform_device *pdev)
 
 	mmc_free_host(mmc);
 
-	platform_set_drvdata(pdev, NULL);
-
 	dev_info(&pdev->dev, "WMT MCI device removed\n");
 
 	return 0;