From: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
The LMMIO length reported by PAT and the length given by the LBA MASK
register are not consistent. This leads e.g. to a non-working ATI FireGL
card with the radeon DRM driver since the memory can't be mapped.
Fix this by correctly adjusting the resource sizes.
Signed-off-by: Helge Deller <deller@xxxxxx>
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index 1f05913..7dc0e40 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -994,6 +994,15 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev)
case PAT_LMMIO:
/* used to fix up pre-initialized MEM BARs */
if (!lba_dev->hba.lmmio_space.flags) {
+ unsigned long lba_len;
+ lba_len = ~READ_REG32(lba_dev->hba.base_addr
+ + LBA_LMMIO_MASK);
+ if ((p->end - p->start) != lba_len) {
+ pr_warn("PCI%02x LMMIO mismatch between PAT length (0x%lx) and MASK register (0x%lx), fixing.\n",
+ (int)lba_dev->hba.bus_num.start,
+ p->end - p->start, lba_len);
+ p->end = p->start + lba_len;
+ }
sprintf(lba_dev->hba.lmmio_name,
"PCI%02x LMMIO",
(int)lba_dev->hba.bus_num.start);
--
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