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authorMichael Hanselmann <linux-kernel@hansmi.ch>2007-05-31 23:34:27 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-12 16:34:29 -0700
commitd576bb9f2769b315a795f77f0c33322a976add7a (patch)
tree56d59afa4d1e96b519e81434bd09598f76bf1fee /drivers/usb/host/ohci-mem.c
parent020363384adfb02f26c1c038a127ed3da3d5cf37 (diff)
downloadop-kernel-dev-d576bb9f2769b315a795f77f0c33322a976add7a.zip
op-kernel-dev-d576bb9f2769b315a795f77f0c33322a976add7a.tar.gz
USB: Fix NEC OHCI chip silicon bug
This patch fixes a silicon bug in some NEC OHCI chips. The bug appears at random times and is very, very difficult to reproduce. Without the following patch, Linux would shut the chip and its associated devices down. In Apple PowerBooks this leads to an unusable keyboard and mouse (SSH still working). The idea of restarting the chip is taken from public Darwin code. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ohci-mem.c')
-rw-r--r--drivers/usb/host/ohci-mem.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-mem.c b/drivers/usb/host/ohci-mem.c
index 2f20d3d..450c7b4 100644
--- a/drivers/usb/host/ohci-mem.c
+++ b/drivers/usb/host/ohci-mem.c
@@ -28,6 +28,7 @@ static void ohci_hcd_init (struct ohci_hcd *ohci)
ohci->next_statechange = jiffies;
spin_lock_init (&ohci->lock);
INIT_LIST_HEAD (&ohci->pending);
+ INIT_WORK (&ohci->nec_work, ohci_quirk_nec_worker);
}
/*-------------------------------------------------------------------------*/
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