Commit 14e04d0d authored by Naveen Naidu's avatar Naveen Naidu Committed by Bjorn Helgaas
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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: default avatarNaveen Naidu <naveennaidu479@gmail.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 3cfdef7a

drivers/pci/controller/pci-hyperv.c

+1 −1
Original line number Diff line number Diff line
@@ -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);