Messages in this thread | | | Date | Wed, 6 Aug 2014 10:30:21 -0600 | From | Jason Gunthorpe <> | Subject | Re: [PATCH] PCI: keystone: add a pci quirk to limit mrrs |
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On Wed, Aug 06, 2014 at 11:18:20AM -0400, Murali Karicheri wrote: > Keystone PCI controller has a limitation that memory read request > size must not exceed 256 bytes. This is a hardware limitation and > add a quirk to force this limit on all downstream devices by > updating mrrs.
Does this still work if the tuning is enabled, or does the tuning run after this?
> + if (pcie_get_readrq(dev) > 256) { > + pr_info("limiting mrrs to 256\n"); > + pcie_set_readrq(dev, 256);
The pr_info should either go away, or at least print the PCI bdf..
Jason
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