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HV: unify the sharing mode and partition mode coding style for similar functions

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Both sharing mode and partition mode should follow the same coding logic/style
for similar functions:

vdev cfgread/cfgwrite: should all return -ENODEV if the pci reg access is not handled by
it, but previously the partition mode code is not following this logic

vpci cfgread/cfgwrite: if the vdev cfgread/cfgwrite does not handle this reg,
pass on to next vdev cfgread/cfgwrite, if no vdev handles that req, passthru to
physical pci device

Tracked-On: #2534
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
dongshen
2019-03-06 16:54:01 -08:00
committed by Eddie Dong
parent 026250fd8a
commit 71ce4c255e
5 changed files with 19 additions and 25 deletions
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4
hypervisor/dm/vpci/msi.c
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@@ -117,14 +117,12 @@ static int32_t vmsi_remap(const struct pci_vdev *vdev, bool enable)
int32_t vmsi_cfgread(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val)
{
int32_t ret;
int32_t ret = -ENODEV;
/* For PIO access, we emulate Capability Structures only */
if (msicap_access(vdev, offset)) {
*val = pci_vdev_read_cfg(vdev, offset, bytes);
ret = 0;
} else {
ret = -ENODEV;
}
return ret;