Re: [PATCH 5/7] pci: Export the pci_restore_msi_state() function

From: "Matt Carlson" <redacted>
Date: Fri, 19 Oct 2007 14:36:56 -0700

This patch exports the pci_restore_msi_state() function.  This function
is needed to restore the MSI state during PCI error recovery.

Signed-off-by: Linas Vepstas <redacted>
Signed-off-by: Matt Carlson <redacted>
Signed-off-by: Michael Chan <mchan@broadcom.com>

I'm not so sure about this.

Perhaps, instead, you should do a pci_msi_disable() and
pci_msi_enable() in the error detection and recovery sequence.

Or, alternatively, save/restore those MSI registers by hand.

I'm trying to figure out how the E1000 driver handles this correctly,
but I can't see it just by reading it over quickly.