From ac9f67b5800b9a96987ec602a34dd256a92ac7ca Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 20 Mar 2017 19:50:33 +0200 Subject: [PATCH] mmc: sdhci-pci: Let devices define their own private data Let devices define their own private data to facilitate device-specific operations. The size of the private structure is specified in the sdhci_pci_fixes structure, then sdhci_pci_probe_slot() will allocate extra space for it, and sdhci_pci_priv() can be used to get a reference to it. Signed-off-by: Adrian Hunter Signed-off-by: Ulf Hansson Tested-by: Ludovic Desroches --- drivers/mmc/host/sdhci-pci-core.c | 3 ++- drivers/mmc/host/sdhci-pci.h | 7 +++++++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c index b7150e935fb6..84b73cb22940 100644 --- a/drivers/mmc/host/sdhci-pci-core.c +++ b/drivers/mmc/host/sdhci-pci-core.c @@ -1830,6 +1830,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( struct sdhci_pci_slot *slot; struct sdhci_host *host; int ret, bar = first_bar + slotno; + size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0; if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); @@ -1851,7 +1852,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot( return ERR_PTR(-ENODEV); } - host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot)); + host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size); if (IS_ERR(host)) { dev_err(&pdev->dev, "cannot allocate host\n"); return ERR_CAST(host); diff --git a/drivers/mmc/host/sdhci-pci.h b/drivers/mmc/host/sdhci-pci.h index e6e916b3361e..cfe519c0c990 100644 --- a/drivers/mmc/host/sdhci-pci.h +++ b/drivers/mmc/host/sdhci-pci.h @@ -70,6 +70,7 @@ struct sdhci_pci_fixes { int (*resume) (struct sdhci_pci_chip *); const struct sdhci_ops *ops; + size_t priv_size; }; struct sdhci_pci_slot { @@ -89,6 +90,7 @@ struct sdhci_pci_slot { struct mmc_card *card, unsigned int max_dtr, int host_drv, int card_drv, int *drv_type); + unsigned long private[0] ____cacheline_aligned; }; struct sdhci_pci_chip { @@ -105,4 +107,9 @@ struct sdhci_pci_chip { struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */ }; +static inline void *sdhci_pci_priv(struct sdhci_pci_slot *slot) +{ + return (void *)slot->private; +} + #endif /* __SDHCI_PCI_H */ -- 2.20.1