linux-kernel - [PATCH 3.16 118/294] parisc: pci memory bar assignment fails with 64bit kernels on dino/cujo

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Date:   Mon, 06 Nov 2017 23:03:02 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Helge Deller" <deller@....de>,
        "Thomas Bogendoerfer" <tsbogend@...ha.franken.de>
Subject: [PATCH 3.16 118/294] parisc: pci memory bar assignment fails with
 64bit kernels on dino/cujo

3.16.50-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>

commit 4098116039911e8870d84c975e2ec22dab65a909 upstream.

For 64bit kernels the lmmio_space_offset of the host bridge window
isn't set correctly on systems with dino/cujo PCI host bridges.
This leads to not assigned memory bars and failing drivers, which
need to use these bars.

Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Acked-by: Helge Deller <deller@....de>
Signed-off-by: Helge Deller <deller@....de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/parisc/dino.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -954,7 +954,7 @@ static int __init dino_probe(struct pari
 
 	dino_dev->hba.dev = dev;
 	dino_dev->hba.base_addr = ioremap_nocache(hpa, 4096);
-	dino_dev->hba.lmmio_space_offset = 0;	/* CPU addrs == bus addrs */
+	dino_dev->hba.lmmio_space_offset = PCI_F_EXTEND;
 	spin_lock_init(&dino_dev->dinosaur_pen);
 	dino_dev->hba.iommu = ccio_get_iommu(dev);