/* * Copyright 2011 Florian Tobias Schandinat * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; * either version 2, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTIES OR REPRESENTATIONS; without even * the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE.See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* * infrastructure for devices connected via I2C */ #include #include "via_aux.h" struct via_aux_bus *via_aux_probe(struct i2c_adapter *adap) { struct via_aux_bus *bus; if (!adap) return NULL; bus = kmalloc(sizeof(*bus), GFP_KERNEL); if (!bus) return NULL; bus->adap = adap; INIT_LIST_HEAD(&bus->drivers); via_aux_edid_probe(bus); via_aux_vt1636_probe(bus); via_aux_vt1632_probe(bus); via_aux_vt1631_probe(bus); via_aux_vt1625_probe(bus); via_aux_vt1622_probe(bus); via_aux_vt1621_probe(bus); via_aux_sii164_probe(bus); via_aux_ch7301_probe(bus); return bus; } void via_aux_free(struct via_aux_bus *bus) { struct via_aux_drv *pos, *n; if (!bus) return; list_for_each_entry_safe(pos, n, &bus->drivers, chain) { if (pos->cleanup) pos->cleanup(pos); list_del(&pos->chain); kfree(pos->data); kfree(pos); } kfree(bus); } const struct fb_videomode *via_aux_get_preferred_mode(struct via_aux_bus *bus) { struct via_aux_drv *pos; const struct fb_videomode *mode = NULL; if (!bus) return NULL; list_for_each_entry(pos, &bus->drivers, chain) { if (pos->get_preferred_mode) mode = pos->get_preferred_mode(pos); } return mode; } ommitdiff
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /sound/soc/adi/Kconfig
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/soc/adi/Kconfig')