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SubjectRe: [PATCH 2/6] staging: vme: make [alloc|free]_consistent bridge specific
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On Wed, 2011-08-10 at 11:33 +0200, Manohar Vanga wrote:
> Make PCI dependent functions ([alloc|free]_consistent() in
> 'vme.c') bridge specific. By removing the dependency of the
> VME bridge framework on PCI, this patch allows for addition of
> non-PCI based VME bridges.
[]
> diff --git a/drivers/staging/vme/bridges/vme_ca91cx42.c b/drivers/staging/vme/bridges/vme_ca91cx42.c
[]
> +void *ca91cx42_alloc_consistent(struct device *parent, size_t size,
> + dma_addr_t *dma)
> +{
> + struct pci_dev *pdev;
> +
> + /* Find pci_dev container of dev */
> + pdev = container_of(parent, struct pci_dev, dev);
> +
> + return pci_alloc_consistent(pdev, size, dma);
> +}
> +
> +void ca91cx42_free_consistent(struct device *parent, size_t size, void *vaddr,
> + dma_addr_t dma)
> +{
> + struct pci_dev *pdev;
> +
> + /* Find pci_dev container of dev */
> + pdev = container_of(parent, struct pci_dev, dev);
> +
> + pci_free_consistent(pdev, size, vaddr, dma);
> +}
[]
> diff --git a/drivers/staging/vme/bridges/vme_tsi148.c b/drivers/staging/vme/bridges/vme_tsi148.c
[]
> @@ -2122,6 +2122,28 @@ static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
> return (int)slot;
> }
>
> +void *tsi148_alloc_consistent(struct device *parent, size_t size,
> + dma_addr_t *dma)
> +{
> + struct pci_dev *pdev;
> +
> + /* Find pci_dev container of dev */
> + pdev = container_of(parent, struct pci_dev, dev);
> +
> + return pci_alloc_consistent(pdev, size, dma);
> +}
> +
> +void tsi148_free_consistent(struct device *parent, size_t size, void *vaddr,
> + dma_addr_t dma)
> +{
> + struct pci_dev *pdev;
> +
> + /* Find pci_dev container of dev */
> + pdev = container_of(parent, struct pci_dev, dev);
> +
> + pci_free_consistent(pdev, size, vaddr, dma);
> +}
> +
> static int __init tsi148_init(void)
> {
> return pci_register_driver(&tsi148_driver);

Except for the name, those 2 blocks are identical.
Maybe create a non-pci generic version instead?

> diff --git a/drivers/staging/vme/vme.c b/drivers/staging/vme/vme.c
[]
> @@ -104,28 +100,29 @@ void *vme_alloc_consistent(struct vme_resource *resource, size_t size,
> return NULL;
> }
>
> - /* Find pci_dev container of dev */
> if (bridge->parent == NULL) {
> - printk(KERN_ERR "Dev entry NULL\n");
> + printk(KERN_ERR "Dev entry NULL for"
> + " bridge %s\n", bridge->name);

Please don't split formats like this.
Use unsplit format strings even if they exceed 80 cols.
This one doesn't.

printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name);
or
pr_err("Dev entry NULL for bridge %s\n", bridge->name);

> + return NULL;
> + }
> +
> + if (bridge->alloc_consistent == NULL) {
> + printk(KERN_ERR "alloc_consistent not supported by"
> + " bridge %s\n", bridge->name);

printk(KERN_ERR "alloc_consistent not supported by bridge %s\n",
bridge->name);

> @@ -138,10 +135,19 @@ void vme_free_consistent(struct vme_resource *resource, size_t size,
> return;
> }
>
> - /* Find pci_dev container of dev */
> - pdev = container_of(bridge->parent, struct pci_dev, dev);
> + if (bridge->parent == NULL) {
> + printk(KERN_ERR "Dev entry NULL for"
> + " bridge %s\n", bridge->name);

etc.




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