From: Jiri Slaby Date: Thu, 4 Apr 2013 19:34:11 +0000 (+0200) Subject: MFD: rtsx_pcr: Fix probe fail path X-Git-Tag: v3.10-rc1~86^2~86 X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=9d66b568a215fe2da2a9db736ebf9b8d66082d88;p=cascardo%2Flinux.git 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: [] warn_slowpath_common+0x7a/0xc0 [] warn_slowpath_null+0x15/0x20 [] pci_enable_msi_block+0x2a4/0x2b0 [] rtsx_pci_probe+0x55a/0x720 [rtsx_pci] ... So properly disable MSI in that case. Signed-off-by: Jiri Slaby Signed-off-by: Samuel Ortiz --- 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: