diff options
| author | Shaun Ruffell <sruffell@digium.com> | 2012-03-21 19:11:57 +0000 |
|---|---|---|
| committer | Shaun Ruffell <sruffell@digium.com> | 2012-03-21 19:11:57 +0000 |
| commit | bef97f2ff7f9fd7e9e2973111a0dc5b1445a72a1 (patch) | |
| tree | 4ad12ce37f5bf02c3821319fc553ac90ff0a6066 /drivers/dahdi/wcte12xp/base.c | |
| parent | 120ddfed50b71256a3fe5f0b718507143faad284 (diff) | |
wcte12xp, wctdm24xxp: Add compile-time option to disable ASPM for PCIe devices.
Certain BIOSes appear to enable ASPM even though it is not fully supported by
the platform. Also, since the PCIe links for TDM cards are always in use it
does not make sense to allow them to transition to the disabled state.
Just turn off power management on the PCIe links completely. For more
information see http://lwn.net/Articles/449448/.
Internal-Issue-ID: DAHLIN-283
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Origin: http://svnview.digium.com/svn/dahdi?view=rev&rev=10557
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/branches/2.6@10567 a0bf4364-ded3-4de4-8d8a-66a801d63aff
Diffstat (limited to 'drivers/dahdi/wcte12xp/base.c')
| -rw-r--r-- | drivers/dahdi/wcte12xp/base.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/dahdi/wcte12xp/base.c b/drivers/dahdi/wcte12xp/base.c index e7f3dca..d61c62e 100644 --- a/drivers/dahdi/wcte12xp/base.c +++ b/drivers/dahdi/wcte12xp/base.c @@ -99,6 +99,11 @@ static const struct t1_desc te120p = {"Wildcard TE120P"}; static const struct t1_desc te122 = {"Wildcard TE122"}; static const struct t1_desc te121 = {"Wildcard TE121"}; +static inline bool is_pcie(const struct t1 *t1) +{ + return (0 == strcmp(t1->variety, te121.name)); +} + /* names of HWEC modules */ static const char *vpmadt032_name = "VPMADT032"; static const char *vpmoct_name = "VPMOCT032"; @@ -2749,6 +2754,13 @@ static int __devinit te12xp_init_one(struct pci_dev *pdev, const struct pci_devi } #endif /* CONFIG_VOICEBUS_ECREFERENCE */ +#ifdef CONFIG_VOICEBUS_DISABLE_ASPM + if (is_pcie(wc)) { + pci_disable_link_state(pdev->bus->self, PCIE_LINK_STATE_L0S | + PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); + }; +#endif + snprintf(wc->name, sizeof(wc->name)-1, "wcte12xp%d", index); pci_set_drvdata(pdev, wc); wc->vb.ops = &voicebus_operations; |