Commit d1b1842c authored by David Brownell's avatar David Brownell Committed by Greg Kroah-Hartman
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USB: ehci: remove obsolete workaround for bogus IRQs

It was pointed out that we found and fixed the cause of the "bogus"
fatal IRQ reports some time ago ... this patch removes the code
which was working around that bug ("status" got clobbered), and a
comment which needlessly confused folk reading this code.

This also includes a minor cleanup to the code which fixed that bug.
Signed-off-by: default avatarDavid Brownell <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent 22552b28
......@@ -686,6 +686,8 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* remote wakeup [4.3.1] */
if (status & STS_PCD) {
unsigned i = HCS_N_PORTS (ehci->hcs_params);
/* kick root hub later */
pcd_status = status;
/* resume root hub? */
......@@ -714,8 +716,6 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
/* PCI errors [] */
if (unlikely ((status & STS_FATAL) != 0)) {
/* bogus "fatal" IRQs appear on some chips... why? */
status = ehci_readl(ehci, &ehci->regs->status);
dbg_cmd (ehci, "fatal", ehci_readl(ehci,
dbg_status (ehci, "fatal", status);
......@@ -734,7 +734,7 @@ dead:
if (bh)
ehci_work (ehci);
spin_unlock (&ehci->lock);
if (pcd_status & STS_PCD)
if (pcd_status)
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