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vfio/pci: replace 1 with PCI_CAP_LIST_NEXT to make code self-explain

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Use the macro PCI_CAP_LIST_NEXT instead of 1, so that the code would be
more self-explain.

This patch makes this change and also fixs one typo in comment.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Wei Yang 2016-02-19 09:42:29 -07:00 • committed by Alex Williamson
parent 40f8f0c31b
commit 3fc1c182c1
1 changed files with 4 additions and 4 deletions
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8
hw/vfio/pci.c
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@ -1509,7 +1509,7 @@ static uint8_t vfio_std_cap_max_size(PCIDevice *pdev, uint8_t pos)
uint16_t next = PCI_CONFIG_SPACE_SIZE; uint16_t next = PCI_CONFIG_SPACE_SIZE;
for (tmp = pdev->config[PCI_CAPABILITY_LIST]; tmp; for (tmp = pdev->config[PCI_CAPABILITY_LIST]; tmp;
tmp = pdev->config[tmp + 1]) { tmp = pdev->config[tmp + PCI_CAP_LIST_NEXT]) {
if (tmp > pos && tmp < next) { if (tmp > pos && tmp < next) {
next = tmp; next = tmp;
} }
@ -1698,7 +1698,7 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos)
int ret; int ret;
cap_id = pdev->config[pos]; cap_id = pdev->config[pos];
next = pdev->config[pos + 1]; next = pdev->config[pos + PCI_CAP_LIST_NEXT];
/* /*
* If it becomes important to configure capabilities to their actual * If it becomes important to configure capabilities to their actual
@ -1712,7 +1712,7 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos)
* pci_add_capability always inserts the new capability at the head * pci_add_capability always inserts the new capability at the head
* of the chain. Therefore to end up with a chain that matches the * of the chain. Therefore to end up with a chain that matches the
* physical device, we insert from the end by making this recursive. * physical device, we insert from the end by making this recursive.
* This is also why we pre-caclulate size above as cached config space * This is also why we pre-calculate size above as cached config space
* will be changed as we unwind the stack. * will be changed as we unwind the stack.
*/ */
if (next) { if (next) {
@ -1728,7 +1728,7 @@ static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos)
} }
/* Use emulated next pointer to allow dropping caps */ /* Use emulated next pointer to allow dropping caps */
pci_set_byte(vdev->emulated_config_bits + pos + 1, 0xff); pci_set_byte(vdev->emulated_config_bits + pos + PCI_CAP_LIST_NEXT, 0xff);
switch (cap_id) { switch (cap_id) {
case PCI_CAP_ID_MSI: case PCI_CAP_ID_MSI: