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| author | Csaba Henk <csaba@gluster.com> | 2009-12-15 17:55:25 +0530 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-12-16 13:37:50 -0800 |
| commit | 2820f333e3b4ad96590093efbed7b3400bcf492b (patch) | |
| tree | 47a9e4ebacfc0df5c070a1f70cc68a9f9af4e164 | |
| parent | dc1a94ae1749d14c55f8b54e9d92bd89df82d51a (diff) | |
| download | kernel-common-2820f333e3b4ad96590093efbed7b3400bcf492b.tar.gz kernel-common-2820f333e3b4ad96590093efbed7b3400bcf492b.tar.bz2 kernel-common-2820f333e3b4ad96590093efbed7b3400bcf492b.zip | |
PCI: Handle case when no pci device can provide cache line size hint
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).
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Csaba Henk <csaba@gluster.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| -rw-r--r-- | 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 7cfa7c38d318..f70f4e23225c 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; |