From 6ded8b3cbd9a6254da5a38f35e20aa3c316d9092 Mon Sep 17 00:00:00 2001 From: Uma Krishnan Date: Fri, 4 Mar 2016 15:55:15 -0600 Subject: cxlflash: Unmap problem state area before detaching master context When operating in the PowerVM environment, the cxlflash module can receive an error from the hypervisor indicating that there are existing mappings in the page table for the process MMIO space. This issue exists because term_afu() currently invokes term_mc() before stop_afu(), allowing for the master context to be detached first and the problem state area to be unmapped second. To resolve this issue, stop_afu() should be called before term_mc(). Signed-off-by: Uma Krishnan Acked-by: Matthew R. Ochs Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 3dbb9fa..ca702d8 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -726,11 +726,11 @@ static void term_mc(struct cxlflash_cfg *cfg, enum undo_level level) */ static void term_afu(struct cxlflash_cfg *cfg) { - term_mc(cfg, UNDO_START); - if (cfg->afu) stop_afu(cfg); + term_mc(cfg, UNDO_START); + pr_debug("%s: returning\n", __func__); } @@ -2492,8 +2492,8 @@ static pci_ers_result_t cxlflash_pci_error_detected(struct pci_dev *pdev, if (unlikely(rc)) dev_err(dev, "%s: Failed to mark user contexts!(%d)\n", __func__, rc); - term_mc(cfg, UNDO_START); stop_afu(cfg); + term_mc(cfg, UNDO_START); return PCI_ERS_RESULT_NEED_RESET; case pci_channel_io_perm_failure: cfg->state = STATE_FAILTERM; -- cgit v0.10.2