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https://github.com/FEX-Emu/linux.git
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[SCSI] ufs: use devres functions for ufshcd
This patch replaces normal calls for resource allocation with devm_*() derivative functions. It makes resource freeing simpler. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Santosh Y <santoshsy@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Seungwon Jeon
James Bottomley
parent
3ca316c582
commit
2953f850c3
@ -92,7 +92,6 @@ static void ufshcd_pci_remove(struct pci_dev *pdev)
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struct ufs_hba *hba = pci_get_drvdata(pdev);
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disable_irq(pdev->irq);
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free_irq(pdev->irq, hba);
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ufshcd_remove(hba);
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pci_release_regions(pdev);
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pci_set_drvdata(pdev, NULL);
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@ -33,9 +33,10 @@
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* this program.
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*/
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#include "ufshcd.h"
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#include <linux/platform_device.h>
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#include "ufshcd.h"
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#ifdef CONFIG_PM
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/**
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* ufshcd_pltfrm_suspend - suspend power management function
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@ -97,62 +98,45 @@ static int ufshcd_pltfrm_probe(struct platform_device *pdev)
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struct ufs_hba *hba;
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void __iomem *mmio_base;
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struct resource *mem_res;
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struct resource *irq_res;
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resource_size_t mem_size;
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int err;
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int irq, err;
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struct device *dev = &pdev->dev;
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mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!mem_res) {
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dev_err(&pdev->dev,
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"Memory resource not available\n");
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dev_err(dev, "Memory resource not available\n");
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err = -ENODEV;
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goto out_error;
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goto out;
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}
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mem_size = resource_size(mem_res);
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if (!request_mem_region(mem_res->start, mem_size, "ufshcd")) {
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dev_err(&pdev->dev,
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"Cannot reserve the memory resource\n");
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err = -EBUSY;
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goto out_error;
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mmio_base = devm_ioremap_resource(dev, mem_res);
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if (IS_ERR(mmio_base)) {
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dev_err(dev, "memory map failed\n");
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err = PTR_ERR(mmio_base);
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goto out;
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}
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mmio_base = ioremap_nocache(mem_res->start, mem_size);
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if (!mmio_base) {
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dev_err(&pdev->dev, "memory map failed\n");
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err = -ENOMEM;
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goto out_release_regions;
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}
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irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (!irq_res) {
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dev_err(&pdev->dev, "IRQ resource not available\n");
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irq = platform_get_irq(pdev, 0);
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if (irq < 0) {
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dev_err(dev, "IRQ resource not available\n");
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err = -ENODEV;
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goto out_iounmap;
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goto out;
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}
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err = dma_set_coherent_mask(dev, dev->coherent_dma_mask);
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if (err) {
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dev_err(&pdev->dev, "set dma mask failed\n");
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goto out_iounmap;
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dev_err(dev, "set dma mask failed\n");
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goto out;
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}
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err = ufshcd_init(&pdev->dev, &hba, mmio_base, irq_res->start);
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err = ufshcd_init(dev, &hba, mmio_base, irq);
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if (err) {
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dev_err(&pdev->dev, "Intialization failed\n");
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goto out_iounmap;
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dev_err(dev, "Intialization failed\n");
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goto out;
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}
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platform_set_drvdata(pdev, hba);
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return 0;
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out_iounmap:
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iounmap(mmio_base);
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out_release_regions:
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release_mem_region(mem_res->start, mem_size);
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out_error:
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out:
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return err;
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}
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@ -164,26 +148,10 @@ out_error:
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*/
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static int ufshcd_pltfrm_remove(struct platform_device *pdev)
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{
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struct resource *mem_res;
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resource_size_t mem_size;
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struct ufs_hba *hba = platform_get_drvdata(pdev);
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disable_irq(hba->irq);
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/* Some buggy controllers raise interrupt after
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* the resources are removed. So first we unregister the
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* irq handler and then the resources used by driver
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*/
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free_irq(hba->irq, hba);
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ufshcd_remove(hba);
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mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!mem_res)
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dev_err(&pdev->dev, "ufshcd: Memory resource not available\n");
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else {
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mem_size = resource_size(mem_res);
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release_mem_region(mem_res->start, mem_size);
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}
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return 0;
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}
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@ -190,38 +190,6 @@ static inline int ufshcd_get_uic_cmd_result(struct ufs_hba *hba)
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MASK_UIC_COMMAND_RESULT;
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}
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/**
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* ufshcd_free_hba_memory - Free allocated memory for LRB, request
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* and task lists
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* @hba: Pointer to adapter instance
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*/
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static inline void ufshcd_free_hba_memory(struct ufs_hba *hba)
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{
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size_t utmrdl_size, utrdl_size, ucdl_size;
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kfree(hba->lrb);
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if (hba->utmrdl_base_addr) {
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utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
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dma_free_coherent(hba->dev, utmrdl_size,
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hba->utmrdl_base_addr, hba->utmrdl_dma_addr);
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}
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if (hba->utrdl_base_addr) {
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utrdl_size =
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(sizeof(struct utp_transfer_req_desc) * hba->nutrs);
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dma_free_coherent(hba->dev, utrdl_size,
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hba->utrdl_base_addr, hba->utrdl_dma_addr);
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}
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if (hba->ucdl_base_addr) {
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ucdl_size =
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(sizeof(struct utp_transfer_cmd_desc) * hba->nutrs);
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dma_free_coherent(hba->dev, ucdl_size,
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hba->ucdl_base_addr, hba->ucdl_dma_addr);
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}
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}
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/**
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* ufshcd_is_valid_req_rsp - checks if controller TR response is valid
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* @ucd_rsp_ptr: pointer to response UPIU
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@ -690,10 +658,10 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
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/* Allocate memory for UTP command descriptors */
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ucdl_size = (sizeof(struct utp_transfer_cmd_desc) * hba->nutrs);
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hba->ucdl_base_addr = dma_alloc_coherent(hba->dev,
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ucdl_size,
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&hba->ucdl_dma_addr,
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GFP_KERNEL);
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hba->ucdl_base_addr = dmam_alloc_coherent(hba->dev,
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ucdl_size,
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&hba->ucdl_dma_addr,
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GFP_KERNEL);
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/*
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* UFSHCI requires UTP command descriptor to be 128 byte aligned.
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@ -713,10 +681,10 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
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* UFSHCI requires 1024 byte alignment of UTRD
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*/
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utrdl_size = (sizeof(struct utp_transfer_req_desc) * hba->nutrs);
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hba->utrdl_base_addr = dma_alloc_coherent(hba->dev,
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utrdl_size,
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&hba->utrdl_dma_addr,
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GFP_KERNEL);
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hba->utrdl_base_addr = dmam_alloc_coherent(hba->dev,
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utrdl_size,
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&hba->utrdl_dma_addr,
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GFP_KERNEL);
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if (!hba->utrdl_base_addr ||
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WARN_ON(hba->utrdl_dma_addr & (PAGE_SIZE - 1))) {
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dev_err(hba->dev,
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@ -729,10 +697,10 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
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* UFSHCI requires 1024 byte alignment of UTMRD
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*/
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utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
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hba->utmrdl_base_addr = dma_alloc_coherent(hba->dev,
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utmrdl_size,
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&hba->utmrdl_dma_addr,
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GFP_KERNEL);
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hba->utmrdl_base_addr = dmam_alloc_coherent(hba->dev,
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utmrdl_size,
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&hba->utmrdl_dma_addr,
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GFP_KERNEL);
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if (!hba->utmrdl_base_addr ||
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WARN_ON(hba->utmrdl_dma_addr & (PAGE_SIZE - 1))) {
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dev_err(hba->dev,
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@ -741,14 +709,15 @@ static int ufshcd_memory_alloc(struct ufs_hba *hba)
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}
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/* Allocate memory for local reference block */
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hba->lrb = kcalloc(hba->nutrs, sizeof(struct ufshcd_lrb), GFP_KERNEL);
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hba->lrb = devm_kzalloc(hba->dev,
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hba->nutrs * sizeof(struct ufshcd_lrb),
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GFP_KERNEL);
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if (!hba->lrb) {
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dev_err(hba->dev, "LRB Memory allocation failed\n");
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goto out;
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}
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return 0;
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out:
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ufshcd_free_hba_memory(hba);
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return -ENOMEM;
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}
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@ -1681,17 +1650,6 @@ int ufshcd_resume(struct ufs_hba *hba)
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}
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EXPORT_SYMBOL_GPL(ufshcd_resume);
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/**
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* ufshcd_hba_free - free allocated memory for
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* host memory space data structures
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* @hba: per adapter instance
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*/
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static void ufshcd_hba_free(struct ufs_hba *hba)
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{
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iounmap(hba->mmio_base);
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ufshcd_free_hba_memory(hba);
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}
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/**
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* ufshcd_remove - de-allocate SCSI host and host memory space
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* data structure memory
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@ -1701,9 +1659,7 @@ void ufshcd_remove(struct ufs_hba *hba)
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{
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/* disable interrupts */
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ufshcd_disable_intr(hba, hba->intr_mask);
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ufshcd_hba_stop(hba);
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ufshcd_hba_free(hba);
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scsi_remove_host(hba->host);
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scsi_host_put(hba->host);
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@ -1789,23 +1745,23 @@ int ufshcd_init(struct device *dev, struct ufs_hba **hba_handle,
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mutex_init(&hba->uic_cmd_mutex);
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/* IRQ registration */
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err = request_irq(irq, ufshcd_intr, IRQF_SHARED, UFSHCD, hba);
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err = devm_request_irq(dev, irq, ufshcd_intr, IRQF_SHARED, UFSHCD, hba);
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if (err) {
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dev_err(hba->dev, "request irq failed\n");
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goto out_lrb_free;
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goto out_disable;
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}
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/* Enable SCSI tag mapping */
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err = scsi_init_shared_tag_map(host, host->can_queue);
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if (err) {
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dev_err(hba->dev, "init shared queue failed\n");
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goto out_free_irq;
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goto out_disable;
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}
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err = scsi_add_host(host, hba->dev);
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if (err) {
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dev_err(hba->dev, "scsi_add_host failed\n");
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goto out_free_irq;
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goto out_disable;
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}
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/* Host controller enable */
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@ -1823,10 +1779,6 @@ int ufshcd_init(struct device *dev, struct ufs_hba **hba_handle,
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out_remove_scsi_host:
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scsi_remove_host(hba->host);
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out_free_irq:
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free_irq(irq, hba);
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out_lrb_free:
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ufshcd_free_hba_memory(hba);
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out_disable:
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scsi_host_put(host);
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out_error:
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