From e09b41010ba33a20a87472ee821fa407a5b8da36 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 11 Apr 2016 10:41:07 +0300 Subject: These changes are the raw update to linux-4.4.6-rt14. Kernel sources are taken from kernel.org, and rt patch from the rt wiki download page. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen --- kernel/arch/s390/pci/pci_event.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) (limited to 'kernel/arch/s390/pci/pci_event.c') diff --git a/kernel/arch/s390/pci/pci_event.c b/kernel/arch/s390/pci/pci_event.c index 460fdb21c..369a3e05d 100644 --- a/kernel/arch/s390/pci/pci_event.c +++ b/kernel/arch/s390/pci/pci_event.c @@ -46,15 +46,13 @@ struct zpci_ccdf_avail { static void __zpci_event_error(struct zpci_ccdf_err *ccdf) { struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); + struct pci_dev *pdev = zdev ? zdev->pdev : NULL; zpci_err("error CCDF:\n"); zpci_err_hex(ccdf, sizeof(*ccdf)); - if (!zdev) - return; - pr_err("%s: Event 0x%x reports an error for PCI function 0x%x\n", - pci_name(zdev->pdev), ccdf->pec, ccdf->fid); + pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid); } void zpci_event_error(void *data) @@ -75,7 +73,13 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) zpci_err_hex(ccdf, sizeof(*ccdf)); switch (ccdf->pec) { - case 0x0301: /* Standby -> Configured */ + case 0x0301: /* Reserved|Standby -> Configured */ + if (!zdev) { + ret = clp_add_pci_device(ccdf->fid, ccdf->fh, 0); + if (ret) + break; + zdev = get_zdev_by_fid(ccdf->fid); + } if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY) break; zdev->state = ZPCI_FN_STATE_CONFIGURED; @@ -83,7 +87,9 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) ret = zpci_enable_device(zdev); if (ret) break; + pci_lock_rescan_remove(); pci_rescan_bus(zdev->bus); + pci_unlock_rescan_remove(); break; case 0x0302: /* Reserved -> Standby */ if (!zdev) @@ -91,7 +97,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) break; case 0x0303: /* Deconfiguration requested */ if (pdev) - pci_stop_and_remove_bus_device(pdev); + pci_stop_and_remove_bus_device_locked(pdev); ret = zpci_disable_device(zdev); if (ret) @@ -108,7 +114,7 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) /* Give the driver a hint that the function is * already unusable. */ pdev->error_state = pci_channel_io_perm_failure; - pci_stop_and_remove_bus_device(pdev); + pci_stop_and_remove_bus_device_locked(pdev); } zdev->fh = ccdf->fh; -- cgit 1.2.3-korg