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eeepc-laptop: dmi blacklist to disable pci hotplug code

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This is a short term workaround for Eeepc 1005HA.

refs: <http://bugzilla.kernel.org/show_bug.cgi?id=14570>

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Corentin Chary 2010-01-06 22:07:38 +01:00 committed by Len Brown
parent da8ba01deb
commit 10ae4b5663
1 changed files with 20 additions and 5 deletions
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25
drivers/platform/x86/eeepc-laptop.c
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@ -161,6 +161,7 @@ struct eeepc_laptop {
u32 cm_supported; /* the control methods supported
by this BIOS */
bool cpufv_disabled;
bool hotplug_disabled;
u16 event_count[128]; /* count for each event */
struct platform_device *platform_device;
@ -845,6 +846,9 @@ static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
if (result && result != -ENODEV)
goto exit;
if (eeepc->hotplug_disabled)
return 0;
result = eeepc_setup_pci_hotplug(eeepc);
/*
* If we get -EBUSY then something else is handling the PCI hotplug -
@ -1314,6 +1318,10 @@ static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
{
const char *model;
model = dmi_get_system_info(DMI_PRODUCT_NAME);
if (!model)
return;
/*
* Blacklist for setting cpufv (cpu speed).
*
@ -1333,17 +1341,24 @@ static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
* substring matching. We don't want to affect the "701SD"
* and "701SDX" models, because they do support S.H.E.
*/
model = dmi_get_system_info(DMI_PRODUCT_NAME);
if (!model)
return;
if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
eeepc->cpufv_disabled = true;
pr_info("model %s does not officially support setting cpu "
"speed\n", model);
pr_info("cpufv disabled to avoid instability\n");
}
/*
* Blacklist for wlan hotplug
*
* Eeepc 1005HA doesn't work like others models and don't need the
* hotplug code. In fact, current hotplug code seems to unplug another
* device...
*/
if (strcmp(model, "1005HA") == 0) {
eeepc->hotplug_disabled = true;
pr_info("wlan hotplug disabled\n");
}
}
static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)