Date: Thu, 1 Feb 2018 16:45:08 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r328684 - stable/11/sys/dev/nvme Message-ID: <201802011645.w11Gj862026112@repo.freebsd.org>
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Author: mav Date: Thu Feb 1 16:45:08 2018 New Revision: 328684 URL: https://svnweb.freebsd.org/changeset/base/328684 Log: MFC r322443 (by nwhitehorn): Move NVME controller shutdown from being called as part of module unloading to being called through the newbus DEVICE_SHUTDOWN() path. This ensures that the NVME controller gets shut down before the device and bus disappear and prevents data corruption on shutdown on at least Samsung EVO 960 SSDs. PR: kern/211852 Modified: stable/11/sys/dev/nvme/nvme.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/dev/nvme/nvme.c ============================================================================== --- stable/11/sys/dev/nvme/nvme.c Thu Feb 1 16:44:19 2018 (r328683) +++ stable/11/sys/dev/nvme/nvme.c Thu Feb 1 16:45:08 2018 (r328684) @@ -58,6 +58,7 @@ MALLOC_DEFINE(M_NVME, "nvme", "nvme(4) memory allocati static int nvme_probe(device_t); static int nvme_attach(device_t); static int nvme_detach(device_t); +static int nvme_shutdown(device_t); static int nvme_modevent(module_t mod, int type, void *arg); static devclass_t nvme_devclass; @@ -67,6 +68,7 @@ static device_method_t nvme_pci_methods[] = { DEVMETHOD(device_probe, nvme_probe), DEVMETHOD(device_attach, nvme_attach), DEVMETHOD(device_detach, nvme_detach), + DEVMETHOD(device_shutdown, nvme_shutdown), { 0, 0 } }; @@ -180,22 +182,15 @@ nvme_unload(void) { } -static void -nvme_shutdown(void) +static int +nvme_shutdown(device_t dev) { - device_t *devlist; struct nvme_controller *ctrlr; - int dev, devcount; - if (devclass_get_devices(nvme_devclass, &devlist, &devcount)) - return; + ctrlr = DEVICE2SOFTC(dev); + nvme_ctrlr_shutdown(ctrlr); - for (dev = 0; dev < devcount; dev++) { - ctrlr = DEVICE2SOFTC(devlist[dev]); - nvme_ctrlr_shutdown(ctrlr); - } - - free(devlist, M_TEMP); + return (0); } static int @@ -208,9 +203,6 @@ nvme_modevent(module_t mod, int type, void *arg) break; case MOD_UNLOAD: nvme_unload(); - break; - case MOD_SHUTDOWN: - nvme_shutdown(); break; default: break;
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