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authorSergei Shtylyov <sshtylyov@ru.mvista.com>2008-04-07 23:30:10 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-07 23:30:10 +0200
commitc976816b6e901341ec3c4653147316c15549a1c4 (patch)
treeaa41c4377d05d78bdeb09c64e73fea82602885f4 /drivers/ide/pci/siimage.c
parent950b0d28378c4ee63a30dad732a8319c8a41c95d (diff)
siimage: fix kernel oops on PPC 44x
Fix kernel oops due to machine check occuring in init_chipset_siimage() on PPC 44x platforms. These 32-bit CPUs have 36-bit physical address and PCI I/O and memory spaces are mapped beyond 4 GB; arch/ppc/ code has a fixup in ioremap() that creates an illusion of the PCI I/O and memory resources being mapped below 4 GB, while arch/powerpc/ code got rid of this fixup with PPC 44x having instead CONFIG_RESOURCES_64BIT=y -- this causes the resources to be truncated to 32-bit 'unsigned long' type in this driver, and so non-existant memory being ioremap'ed and then accessed... Thanks to Valentine Barshak for providing an initial patch and explanations. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/siimage.c')
-rw-r--r--drivers/ide/pci/siimage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index cc4be9621bc0..8d624afe8529 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -492,7 +492,7 @@ static void proc_reports_siimage (struct pci_dev *dev, u8 clocking, const char *
static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name)
{
- unsigned long bar5 = pci_resource_start(dev, 5);
+ resource_size_t bar5 = pci_resource_start(dev, 5);
unsigned long barsize = pci_resource_len(dev, 5);
u8 tmpbyte = 0;
void __iomem *ioaddr;