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path: root/drivers/crypto/ccp/sp-pci.c
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Diffstat (limited to 'drivers/crypto/ccp/sp-pci.c')
-rw-r--r--drivers/crypto/ccp/sp-pci.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/sp-pci.c b/drivers/crypto/ccp/sp-pci.c
index 56c1f61c0f84..cb6cb47053f4 100644
--- a/drivers/crypto/ccp/sp-pci.c
+++ b/drivers/crypto/ccp/sp-pci.c
@@ -146,6 +146,14 @@ static struct sp_device *psp_get_master(void)
return sp_dev_master;
}
+static void psp_clear_master(struct sp_device *sp)
+{
+ if (sp == sp_dev_master) {
+ sp_dev_master = NULL;
+ dev_dbg(sp->dev, "Cleared sp_dev_master\n");
+ }
+}
+
static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct sp_device *sp;
@@ -206,6 +214,7 @@ static int sp_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pci_set_master(pdev);
sp->set_psp_master_device = psp_set_master;
sp->get_psp_master_device = psp_get_master;
+ sp->clear_psp_master_device = psp_clear_master;
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
if (ret) {