[PATCH 04/11] hpt366: write the full 4 bytes of ROM address, not just low 1 byte

From: Chris Wright
Date: Wed Sep 14 2005 - 20:05:04 EST


-stable review patch. If anyone has any objections, please let us know.
------------------

This is one heck of a confused driver. It uses a byte write to a dword
register to enable a ROM resource that it doesn't even seem to be using.

"Lost and wandering in the desert of confusion"

Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxx>
---
drivers/ide/pci/hpt366.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)

Index: linux-2.6.13.y/drivers/ide/pci/hpt366.c
===================================================================
--- linux-2.6.13.y.orig/drivers/ide/pci/hpt366.c
+++ linux-2.6.13.y/drivers/ide/pci/hpt366.c
@@ -1334,9 +1334,13 @@ static int __devinit init_hpt366(struct
static unsigned int __devinit init_chipset_hpt366(struct pci_dev *dev, const char *name)
{
int ret = 0;
- /* FIXME: Not portable */
+
+ /*
+ * FIXME: Not portable. Also, why do we enable the ROM in the first place?
+ * We don't seem to be using it.
+ */
if (dev->resource[PCI_ROM_RESOURCE].start)
- pci_write_config_byte(dev, PCI_ROM_ADDRESS,
+ pci_write_config_dword(dev, PCI_ROM_ADDRESS,
dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);

pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));

--
-
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