diff options
| author | Chris Ball <cjb@laptop.org> | 2011-03-29 00:46:12 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-09 15:06:40 -0700 |
| commit | 4e90d9686addf31f74821cacd54cda8c70a67038 (patch) | |
| tree | 635e8f93144ef0f69c6a04509dc39f9cbbdabbcf | |
| parent | 3fe962c04818a4634255beb3be9f236d36350543 (diff) | |
| download | lwn-4e90d9686addf31f74821cacd54cda8c70a67038.tar.gz lwn-4e90d9686addf31f74821cacd54cda8c70a67038.zip | |
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 <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/mmc/host/sdhci-pci.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index f7e622c539ba..b1b2fc04dd72 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; } |