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authorAllan, Bruce W <bruce.w.allan@intel.com>2015-01-09 11:55:14 -0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-01-13 22:30:46 +1100
commita6bcc1e443420f370881ec0b38aea636c1bf71c7 (patch)
tree9d58699df2f9d5adab25db18e0e1a3c7084df10c /drivers/crypto
parentfd98d692bb2bdd22f76bf1449df7131cefddccae (diff)
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: Bruce Allan <bruce.w.allan@intel.com> Acked-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/qat/qat_common/adf_aer.c17
1 files changed, 2 insertions, 15 deletions
diff --git a/drivers/crypto/qat/qat_common/adf_aer.c b/drivers/crypto/qat/qat_common/adf_aer.c
index 740dc9e1c70c..fa1fef824de2 100644
--- a/drivers/crypto/qat/qat_common/adf_aer.c
+++ b/drivers/crypto/qat/qat_common/adf_aer.c
@@ -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);