Comment 11 for bug 1366841

Mainline:

commit 5152970538a5e16c03bbcb9f1c780489a795ed40
Author: Chris Ball <email address hidden>
Date: Thu Sep 4 17:11:53 2014 +0100

    mfd: rtsx_pcr: Fix MSI enable error handling

    pci_enable_msi() can return failure with both positive and negative
    integers -- it returns 0 for success -- but is only tested here for
    "if (ret < 0)". This causes us to try to use MSI on the RTS5249 SD
    reader in the Dell XPS 11 when enabling MSI failed, causing:

    [ 1.737110] rtsx_pci: probe of 0000:05:00.0 failed with error -110

patch has been submitted to kernel-team@