This is a note to let you know that I've just added the patch titled
USB: EHCI: avoid BIOS handover on the HASEE E200
to the 3.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-ehci-avoid-bios-handover-on-the-hasee-e200.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From b0a50e92bda3c4aeb8017d4e6c6e92146ebd5c9b Mon Sep 17 00:00:00 2001
From: Alan Stern <[email protected]>
Date: Tue, 3 Jun 2014 11:00:27 -0400
Subject: USB: EHCI: avoid BIOS handover on the HASEE E200
From: Alan Stern <[email protected]>
commit b0a50e92bda3c4aeb8017d4e6c6e92146ebd5c9b upstream.
Leandro Liptak reports that his HASEE E200 computer hangs when we ask
the BIOS to hand over control of the EHCI host controller. This
definitely sounds like a bug in the BIOS, but at the moment there is
no way to fix it.
This patch works around the problem by avoiding the handoff whenever
the motherboard and BIOS version match those of Leandro's computer.
Signed-off-by: Alan Stern <[email protected]>
Reported-by: Leandro Liptak <[email protected]>
Tested-by: Leandro Liptak <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/host/pci-quirks.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -656,6 +656,14 @@ static const struct dmi_system_id ehci_d
DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"),
},
},
+ {
+ /* HASEE E200 */
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "HASEE"),
+ DMI_MATCH(DMI_BOARD_NAME, "E210"),
+ DMI_MATCH(DMI_BIOS_VERSION, "6.00"),
+ },
+ },
{ }
};
@@ -665,9 +673,14 @@ static void ehci_bios_handoff(struct pci
{
int try_handoff = 1, tried_handoff = 0;
- /* The Pegatron Lucid tablet sporadically waits for 98 seconds trying
- * the handoff on its unused controller. Skip it. */
- if (pdev->vendor == 0x8086 && pdev->device == 0x283a) {
+ /*
+ * The Pegatron Lucid tablet sporadically waits for 98 seconds trying
+ * the handoff on its unused controller. Skip it.
+ *
+ * The HASEE E200 hangs when the semaphore is set (bugzilla #77021).
+ */
+ if (pdev->vendor == 0x8086 && (pdev->device == 0x283a ||
+ pdev->device == 0x27cc)) {
if (dmi_check_system(ehci_dmi_nohandoff_table))
try_handoff = 0;
}
Patches currently in stable-queue which might be from [email protected]
are
queue-3.15/usb-usbtest-add-a-timeout-for-scatter-gather-tests.patch
queue-3.15/usb-ehci-avoid-bios-handover-on-the-hasee-e200.patch
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