From: Rafał Miłecki <zajec5@gmail.com>
Date: Fri, 13 Jan 2012 22:58:38 +0000 (+0100)
Subject: bcma: invalidate the mapped core over suspend/resume
X-Git-Tag: v3.2.2~22
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c893fe01b35036f062a9c7d7f6b7fc926fc91115;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

bcma: invalidate the mapped core over suspend/resume

commit 28e7d218da975f6ae1751e293aed938952c55c98 upstream.

This clears the currently mapped core when suspending, to force
re-mapping after resume. Without that we were touching default core
registers believing some other core is mapped. Such a behaviour
resulted in lockups on some machines.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/bcma/host_pci.c b/drivers/bcma/host_pci.c
index 990f5a8..48e06be 100644
--- a/drivers/bcma/host_pci.c
+++ b/drivers/bcma/host_pci.c
@@ -227,11 +227,14 @@ static void bcma_host_pci_remove(struct pci_dev *dev)
 #ifdef CONFIG_PM
 static int bcma_host_pci_suspend(struct pci_dev *dev, pm_message_t state)
 {
+	struct bcma_bus *bus = pci_get_drvdata(dev);
+
 	/* Host specific */
 	pci_save_state(dev);
 	pci_disable_device(dev);
 	pci_set_power_state(dev, pci_choose_state(dev, state));
 
+	bus->mapped_core = NULL;
 	return 0;
 }