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authorChris Ball <chris@printf.net>2014-09-04 17:11:53 +0100
committerLee Jones <lee.jones@linaro.org>2014-09-26 08:23:52 +0100
commit5152970538a5e16c03bbcb9f1c780489a795ed40 (patch)
treeac35cc785d4504c0ab846526b1f14020b6e8baa5 /drivers/mfd
parent6a71f38dd87f255a0586104ce2a14d5a3ddf3401 (diff)
downloadblackbird-op-linux-5152970538a5e16c03bbcb9f1c780489a795ed40.tar.gz
blackbird-op-linux-5152970538a5e16c03bbcb9f1c780489a795ed40.zip
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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/rtsx_pcr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index d01b8c249231..f2643c221d34 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -1197,7 +1197,7 @@ static int rtsx_pci_probe(struct pci_dev *pcidev,
pcr->msi_en = msi_en;
if (pcr->msi_en) {
ret = pci_enable_msi(pcidev);
- if (ret < 0)
+ if (ret)
pcr->msi_en = false;
}
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