Messages in this thread Patch in this message | | | Date | Tue, 15 Dec 2009 17:55:25 +0530 | From | Csaba Henk <> | Subject | [PATCH 1/1] PCI: Handle case when no pci device can provide cache line size hint |
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Prior to this patch, if pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, ...) returns 0 for all dev, pci_cache_line_size ends up set to zero (instead of pci_dfl_cache_line_size).
This patch ensures the pci_cache_line_size = pci_dfl_cache_line_size setting in the above scenario.
This happens in case of a kvm-88 guest (where, consequently, the rtl8139 NIC failed to initialize).
Signed-off-by: Csaba Henk <csaba@gluster.com> --- drivers/pci/quirks.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7cfa7c3..f70f4e2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2629,7 +2629,7 @@ static int __init pci_apply_final_quirks(void) if (!pci_cache_line_size) { printk(KERN_DEBUG "PCI: CLS %u bytes, default %u\n", cls << 2, pci_dfl_cache_line_size << 2); - pci_cache_line_size = cls; + pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; } return 0; -- 1.6.5.6
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