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PCI: hv: Use PCI_ERROR_RESPONSE to identify config read errors 

Include PCI_ERROR_RESPONSE along with 0xFFFFFFFF in the comment about
identifying config read errors. This makes checks for config read errors
easier to find. Comment change only.

Link: https://lore.kernel.org/r/12124f41cab7d8aa944de05f85d9567bfe157704.1637243717.git.naveennaidu479@gmail.com
Signed-off-by: Naveen Naidu <naveennaidu479@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Naveen Naidu 2021-11-18 19:33:34 +05:30 committed by Bjorn Helgaas
parent 3cfdef7a57
commit 14e04d0d5e
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/pci-hyperv.c
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@ -1774,7 +1774,7 @@ static void prepopulate_bars(struct hv_pcibus_device *hbus)
* If the memory enable bit is already set, Hyper-V silently ignores
* the below BAR updates, and the related PCI device driver can not
* work, because reading from the device register(s) always returns
* 0xFFFFFFFF.
* 0xFFFFFFFF (PCI_ERROR_RESPONSE).
*/
list_for_each_entry(hpdev, &hbus->children, list_entry) {
_hv_pcifront_read_config(hpdev, PCI_COMMAND, 2, &command);