From 4e90d9686addf31f74821cacd54cda8c70a67038 Mon Sep 17 00:00:00 2001 From: Chris Ball Date: Tue, 29 Mar 2011 00:46:12 -0400 Subject: mmc: sdhci-pci: Fix error case in sdhci_pci_probe_slot() commit 9fdcdbb0d84922e7ccda2f717a04ea62629f7e18 upstream. If pci_ioremap_bar() fails during probe, we "goto release;" and free the host, but then we return 0 -- which tells sdhci_pci_probe() that the probe succeeded. Since we think the probe succeeded, when we unload sdhci we'll go to sdhci_pci_remove_slot() and it will try to dereference slot->host, which is now NULL because we freed it in the error path earlier. The patch simply sets ret appropriately, so that sdhci_pci_probe() will detect the failure immediately and bail out. Signed-off-by: Chris Ball Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/sdhci-pci.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/mmc') diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index f7e622c539b..b1b2fc04dd7 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -961,6 +961,7 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( host->ioaddr = pci_ioremap_bar(pdev, bar); if (!host->ioaddr) { dev_err(&pdev->dev, "failed to remap registers\n"); + ret = -ENOMEM; goto release; } -- cgit v1.2.3