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scsi: ufs: Fix race conditions related to driver data

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[ Upstream commit 21ad0e49085deb22c094f91f9da57319a97188e4 ]

The driver data pointer must be set before any callbacks are registered
that use that pointer. Hence move the initialization of that pointer from
after the ufshcd_init() call to inside ufshcd_init().

Link: https://lore.kernel.org/r/20211203231950.193369-7-bvanassche@acm.org
Fixes: 3b1d05807a ("[SCSI] ufs: Segregate PCI Specific Code")
Reported-by: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bart Van Assche 2021-12-03 15:19:39 -08:00 committed by Greg Kroah-Hartman
parent b9b691de3c
commit 27a90275e8
3 changed files with 7 additions and 3 deletions
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1
drivers/scsi/ufs/tc-dwc-g210-pci.c
View File

@ -135,7 +135,6 @@ tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return err;
}
pci_set_drvdata(pdev, hba);
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_allow(&pdev->dev);

2
drivers/scsi/ufs/ufshcd-pltfrm.c
View File

@ -436,8 +436,6 @@ int ufshcd_pltfrm_init(struct platform_device *pdev,
goto dealloc_host;
}
platform_set_drvdata(pdev, hba);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);

7
drivers/scsi/ufs/ufshcd.c
View File

@ -8328,6 +8328,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
struct Scsi_Host *host = hba->host;
struct device *dev = hba->dev;
/*
* dev_set_drvdata() must be called before any callbacks are registered
* that use dev_get_drvdata() (frequency scaling, clock scaling, hwmon,
* sysfs).
*/
dev_set_drvdata(dev, hba);
if (!mmio_base) {
dev_err(hba->dev,
"Invalid memory reference for mmio_base is NULL\n");