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Commit a6bcc1e4 authored by Allan, Bruce W's avatar Allan, Bruce W Committed by Herbert Xu
Browse files

crypto: qat - use pci_wait_for_pending_transaction() 



Prior to resetting the hardware, use pci_wait_for_pending_transaction()
instead of open coding similar functionality.

Signed-off-by: default avatarBruce Allan <bruce.w.allan@intel.com>
Acked-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent fd98d692

drivers/crypto/qat/qat_common/adf_aer.c

+2 −15
Original line number Diff line number Diff line
@@ -82,28 +82,15 @@ struct adf_reset_dev_data { 
	struct work_struct reset_work;

};



#define PPDSTAT_OFFSET 0x7E

static void adf_dev_restore(struct adf_accel_dev *accel_dev)

{

	struct pci_dev *pdev = accel_to_pci_dev(accel_dev);

	struct pci_dev *parent = pdev->bus->self;

	uint16_t ppdstat = 0, bridge_ctl = 0;

	int pending = 0;

	uint16_t bridge_ctl = 0;



	pr_info("QAT: Resetting device qat_dev%d\n", accel_dev->accel_id);

	pci_read_config_word(pdev, PPDSTAT_OFFSET, &ppdstat);

	pending = ppdstat & PCI_EXP_DEVSTA_TRPND;

	if (pending) {

		int ctr = 0;



		do {

			msleep(100);

			pci_read_config_word(pdev, PPDSTAT_OFFSET, &ppdstat);

			pending = ppdstat & PCI_EXP_DEVSTA_TRPND;

		} while (pending && ctr++ < 10);

	}



	if (pending)

	if (!pci_wait_for_pending_transaction(pdev))

		pr_info("QAT: Transaction still in progress. Proceeding\n");



	pci_read_config_word(parent, PCI_BRIDGE_CONTROL, &bridge_ctl);