From: Chris Ball <chris@printf.net>
Date: Thu, 4 Sep 2014 16:11:53 +0000 (+0100)
Subject: mfd: rtsx_pcr: Fix MSI enable error handling
X-Git-Tag: fixes-against-v3.18-rc2~69^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5152970538a5e16c03bbcb9f1c780489a795ed40;p=pandora-kernel.git

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

Cc: stable <stable@vger.kernel.org>
Reported-by: D. Jared Dominguez <Jared_Dominguez@Dell.com>
Tested-by: D. Jared Dominguez <Jared_Dominguez@Dell.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---

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