crypto: qat - fix bar discovery for c62x

commit 3484ecbe upstream.

Some accelerators of the c62x series have only two bars.
This patch skips BAR0 if the accelerator does not have it.
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/crypto/qat/qat_c62x/adf_drv.c

@@ -233,7 +233,7 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 			      &hw_data->accel_capabilities_mask);
 
 	/* Find and map all the device's BARS */
-	i = 0;
+	i = (hw_data->fuses & ADF_DEVICE_FUSECTL_MASK) ? 1 : 0;
 	bar_mask = pci_select_bars(pdev, IORESOURCE_MEM);
 	for_each_set_bit(bar_nr, (const unsigned long *)&bar_mask,
 			 ADF_PCI_MAX_BARS * 2) {

drivers/crypto/qat/qat_common/adf_accel_devices.h

@@ -69,6 +69,7 @@
 #define ADF_ERRSOU5 (0x3A000 + 0xD8)
 #define ADF_DEVICE_FUSECTL_OFFSET 0x40
 #define ADF_DEVICE_LEGFUSE_OFFSET 0x4C
+#define ADF_DEVICE_FUSECTL_MASK 0x80000000
 #define ADF_PCI_MAX_BARS 3
 #define ADF_DEVICE_NAME_LENGTH 32
 #define ADF_ETR_MAX_RINGS_PER_BANK 16