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Commit c5c9b26e authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

cciss: switch to pci_irq_alloc_vectors 



Simple cleanup to use the new APIs.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarDon Brace <don.brace@microsemi.com>
Tested-by: default avatarDon Brace <don.brace@microsemi.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent ecdd0959

drivers/block/cciss.c

+15 −39
Original line number Diff line number Diff line
@@ -4074,41 +4074,27 @@ static void cciss_put_controller_into_performant_mode(ctlr_info_t *h) 


static void cciss_interrupt_mode(ctlr_info_t *h)

{

#ifdef CONFIG_PCI_MSI

	int err;

	struct msix_entry cciss_msix_entries[4] = { {0, 0}, {0, 1},

	{0, 2}, {0, 3}

	};

	int ret;



	/* Some boards advertise MSI but don't really support it */

	if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||

	    (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))

		goto default_int_mode;



	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {

		err = pci_enable_msix_exact(h->pdev, cciss_msix_entries, 4);

		if (!err) {

			h->intr[0] = cciss_msix_entries[0].vector;

			h->intr[1] = cciss_msix_entries[1].vector;

			h->intr[2] = cciss_msix_entries[2].vector;

			h->intr[3] = cciss_msix_entries[3].vector;

			h->msix_vector = 1;

	ret = pci_alloc_irq_vectors(h->pdev, 4, 4, PCI_IRQ_MSIX);

	if (ret >= 0)   {

		h->intr[0] = pci_irq_vector(h->pdev, 0);

		h->intr[1] = pci_irq_vector(h->pdev, 1);

		h->intr[2] = pci_irq_vector(h->pdev, 2);

		h->intr[3] = pci_irq_vector(h->pdev, 3);

		return;

		} else {

			dev_warn(&h->pdev->dev,

				"MSI-X init failed %d\n", err);

		}

	}

	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {

		if (!pci_enable_msi(h->pdev))

			h->msi_vector = 1;

		else

			dev_warn(&h->pdev->dev, "MSI init failed\n");

	}



	ret = pci_alloc_irq_vectors(h->pdev, 1, 1, PCI_IRQ_MSI);



default_int_mode:

#endif				/* CONFIG_PCI_MSI */

	/* if we get here we're going to use the default interrupt mode */

	h->intr[h->intr_mode] = h->pdev->irq;

	h->intr[h->intr_mode] = pci_irq_vector(h->pdev, 0);

	return;

}
@@ -4888,7 +4874,7 @@ static int cciss_request_irq(ctlr_info_t *h, 
	irqreturn_t (*msixhandler)(int, void *),

	irqreturn_t (*intxhandler)(int, void *))

{

	if (h->msix_vector || h->msi_vector) {

	if (h->pdev->msi_enabled || h->pdev->msix_enabled) {

		if (!request_irq(h->intr[h->intr_mode], msixhandler,

				0, h->devname, h))

			return 0;
@@ -4934,12 +4920,7 @@ static void cciss_undo_allocations_after_kdump_soft_reset(ctlr_info_t *h) 
	int ctlr = h->ctlr;



	free_irq(h->intr[h->intr_mode], h);

#ifdef CONFIG_PCI_MSI

	if (h->msix_vector)

		pci_disable_msix(h->pdev);

	else if (h->msi_vector)

		pci_disable_msi(h->pdev);

#endif /* CONFIG_PCI_MSI */

	pci_free_irq_vectors(h->pdev);

	cciss_free_sg_chain_blocks(h->cmd_sg_list, h->nr_cmds);

	cciss_free_scatterlists(h);

	cciss_free_cmd_pool(h);
@@ -5295,12 +5276,7 @@ static void cciss_remove_one(struct pci_dev *pdev) 


	cciss_shutdown(pdev);



#ifdef CONFIG_PCI_MSI

	if (h->msix_vector)

		pci_disable_msix(h->pdev);

	else if (h->msi_vector)

		pci_disable_msi(h->pdev);

#endif				/* CONFIG_PCI_MSI */

	pci_free_irq_vectors(h->pdev);



	iounmap(h->transtable);

	iounmap(h->cfgtable);

drivers/block/cciss.h

+2 −4
Original line number Diff line number Diff line
@@ -90,8 +90,6 @@ struct ctlr_info 
#	define SIMPLE_MODE_INT	2

#	define MEMQ_MODE_INT	3

	unsigned int intr[4];

	unsigned int msix_vector;

	unsigned int msi_vector;

	int	intr_mode;

	int 	cciss_max_sectors;

	BYTE	cciss_read;
@@ -333,7 +331,7 @@ static unsigned long SA5_performant_completed(ctlr_info_t *h) 
	 */

	register_value = readl(h->vaddr + SA5_OUTDB_STATUS);

	/* msi auto clears the interrupt pending bit. */

	if (!(h->msi_vector || h->msix_vector)) {

	if (!(h->pdev->msi_enabled || h->pdev->msix_enabled)) {

		writel(SA5_OUTDB_CLEAR_PERF_BIT, h->vaddr + SA5_OUTDB_CLEAR);

		/* Do a read in order to flush the write to the controller

		 * (as per spec.)
@@ -393,7 +391,7 @@ static bool SA5_performant_intr_pending(ctlr_info_t *h) 
	if (!register_value)

		return false;



	if (h->msi_vector || h->msix_vector)

	if (h->pdev->msi_enabled || h->pdev->msix_enabled)

		return true;



	/* Read outbound doorbell to flush */