[78/98] parisc: Set PCI CLS early in boot.

From: Greg KH
Date: Mon May 10 2010 - 19:13:06 EST


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

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

From: Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>

commit 5fd4514bb351b5ecb0da3692fff70741e5ed200c upstream.

Set the PCI CLS early in the boot process to prevent
device failures. In pcibios_set_master use the new
pci_cache_line_size instead of a hard-coded value.

Signed-off-by: Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>
Reviewed-by: Grant Grundler <grundler@xxxxxxxxxx>
Signed-off-by: Kyle McMartin <kyle@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
arch/parisc/kernel/pci.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

--- a/arch/parisc/kernel/pci.c
+++ b/arch/parisc/kernel/pci.c
@@ -18,7 +18,6 @@

#include <asm/io.h>
#include <asm/system.h>
-#include <asm/cache.h> /* for L1_CACHE_BYTES */
#include <asm/superio.h>

#define DEBUG_RESOURCES 0
@@ -123,6 +122,10 @@ static int __init pcibios_init(void)
} else {
printk(KERN_WARNING "pci_bios != NULL but init() is!\n");
}
+
+ /* Set the CLS for PCI as early as possible. */
+ pci_cache_line_size = pci_dfl_cache_line_size;
+
return 0;
}

@@ -171,7 +174,7 @@ void pcibios_set_master(struct pci_dev *
** upper byte is PCI_LATENCY_TIMER.
*/
pci_write_config_word(dev, PCI_CACHE_LINE_SIZE,
- (0x80 << 8) | (L1_CACHE_BYTES / sizeof(u32)));
+ (0x80 << 8) | pci_cache_line_size);
}




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