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qcacmn: Avoid marking MSI as wakeable

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On MSM platforms, MSI vectors are always wakeable, so calling
enable_irq_wake() on an MSI vector interrupt line is a no-op.
Additionally, on some product lines, this call will fail. This causes
suspend to fail despite the MSI already being wakeable. Simply avoid
marking the wake MSI as wakeable during suspend as a work around.

Change-Id: I32b2b4fb231681ad29b4e98b2410d0eb6e68c671
CRs-Fixed: 2357784
This commit is contained in:
Dustin Brown 2018-11-19 12:08:38 -08:00 • committed by nshrivas
commit da4fb2ad20
1 changed files with 4 additions and 48 deletions
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52
hif/src/pcie/if_pci.c
View file

@ -2528,33 +2528,14 @@ void hif_pci_prevent_linkdown(struct hif_softc *scn, bool flag)
}
#endif
static int hif_mark_wake_irq_wakeable(struct hif_softc *scn)
{
int errno;
errno = enable_irq_wake(scn->wake_irq);
if (errno) {
HIF_ERROR("%s: Failed to mark wake IRQ: %d", __func__, errno);
return errno;
}
return 0;
}
/**
* hif_pci_bus_suspend(): prepare hif for suspend
*
* Enables pci bus wake irq based on link suspend voting.
*
* Return: 0 for success and non-zero error code for failure
* Return: Errno
*/
int hif_pci_bus_suspend(struct hif_softc *scn)
{
if (hif_can_suspend_link(GET_HIF_OPAQUE_HDL(scn)))
return 0;
/* pci link is staying up; enable wake irq */
return hif_mark_wake_irq_wakeable(scn);
return 0;
}
/**
@ -2596,39 +2577,14 @@ static int __hif_check_link_status(struct hif_softc *scn)
return -EACCES;
}
static int hif_unmark_wake_irq_wakeable(struct hif_softc *scn)
{
int errno;
errno = disable_irq_wake(scn->wake_irq);
if (errno) {
HIF_ERROR("%s: Failed to unmark wake IRQ: %d", __func__, errno);
return errno;
}
return 0;
}
/**
* hif_pci_bus_resume(): prepare hif for resume
*
* Disables pci bus wake irq based on link suspend voting.
*
* Return: 0 for success and non-zero error code for failure
* Return: Errno
*/
int hif_pci_bus_resume(struct hif_softc *scn)
{
int ret;
ret = __hif_check_link_status(scn);
if (ret)
return ret;
if (hif_can_suspend_link(GET_HIF_OPAQUE_HDL(scn)))
return 0;
/* pci link is up; disable wake irq */
return hif_unmark_wake_irq_wakeable(scn);
return __hif_check_link_status(scn);
}
/**