diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2013-04-04 21:34:11 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-04-05 18:40:14 +0200 |
| commit | 9d66b568a215fe2da2a9db736ebf9b8d66082d88 (patch) | |
| tree | b5dcd15e5ea4d683575ea5310cf0b1ae25923791 /drivers/mfd/rtsx_pcr.c | |
| parent | 58eb893da99815ebdeee6cb3eeac897b99a246f7 (diff) | |
| download | lwn-9d66b568a215fe2da2a9db736ebf9b8d66082d88.tar.gz lwn-9d66b568a215fe2da2a9db736ebf9b8d66082d88.zip | |
MFD: rtsx_pcr: Fix probe fail path
When rtsx_pci_acquire_irq fails in rtsx_pci_probe, we forget to
disable an MSI (if we enabled it). This results in this warning on the
next attempt to load the module:
WARNING: at drivers/pci/msi.c:834 pci_enable_msi_block+0x2a4/0x2b0()
Hardware name: HP EliteBook 840 G1
Modules linked in: rtsx_pci(+) ...
Pid: 4056, comm: modprobe Tainted: G I 3.8.0-9405-gd895cb1-1-vanilla #1
Call Trace:
[<ffffffff81045c6a>] warn_slowpath_common+0x7a/0xc0
[<ffffffff81045cc5>] warn_slowpath_null+0x15/0x20
[<ffffffff81302544>] pci_enable_msi_block+0x2a4/0x2b0
[<ffffffffa05e335a>] rtsx_pci_probe+0x55a/0x720 [rtsx_pci]
...
So properly disable MSI in that case.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/rtsx_pcr.c')
| -rw-r--r-- | drivers/mfd/rtsx_pcr.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c index 2f12cc13489a..578a1136b6dc 100644 --- a/drivers/mfd/rtsx_pcr.c +++ b/drivers/mfd/rtsx_pcr.c @@ -1138,7 +1138,7 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, ret = rtsx_pci_acquire_irq(pcr); if (ret < 0) - goto free_dma; + goto disable_msi; pci_set_master(pcidev); synchronize_irq(pcr->irq); @@ -1162,7 +1162,9 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, disable_irq: free_irq(pcr->irq, (void *)pcr); -free_dma: +disable_msi: + if (pcr->msi_en) + pci_disable_msi(pcr->pci); dma_free_coherent(&(pcr->pci->dev), RTSX_RESV_BUF_LEN, pcr->rtsx_resv_buf, pcr->rtsx_resv_buf_addr); unmap: |