Patch "crypto: qat - fix bar discovery for c62x" has been added to the 4.9-stable tree

Patch "crypto: qat - fix bar discovery for c62x" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    crypto: qat - fix bar discovery for c62x

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     crypto-qat-fix-bar-discovery-for-c62x.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 3484ecbe0e9deb94afb0b9b6172d77e98eb72b94 Mon Sep 17 00:00:00 2001
From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Date: Thu, 22 Dec 2016 15:00:12 +0000
Subject: crypto: qat - fix bar discovery for c62x

From: Giovanni Cabiddu <giovanni.cabiddu@intel.com>

commit 3484ecbe0e9deb94afb0b9b6172d77e98eb72b94 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             |    2 +-
 drivers/crypto/qat/qat_common/adf_accel_devices.h |    1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/crypto/qat/qat_c62x/adf_drv.c
+++ b/drivers/crypto/qat/qat_c62x/adf_drv.c
@@ -233,7 +233,7 @@ static int adf_probe(struct pci_dev *pde
 			      &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) {
--- a/drivers/crypto/qat/qat_common/adf_accel_devices.h
+++ b/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


Patches currently in stable-queue which might be from giovanni.cabiddu@intel.com are

queue-4.9/crypto-qat-fix-bar-discovery-for-c62x.patch
queue-4.9/crypto-qat-zero-esram-only-for-dh85x-devices.patch