Staging
v0.8.1
v0.8.1
https://github.com/torvalds/linux
Revision a3b25d157d5a52ef3f9296a739ee28f5d36e8968 authored by Linus Torvalds on 24 May 2019, 16:12:46 UTC, committed by Linus Torvalds on 24 May 2019, 16:12:46 UTC
Pull drm fixes from Dave Airlie: "Nothing too unusual here for rc2. Except the amdgpu DMCU firmware loading fix caused build breakage with a different set of Kconfig options. I've just reverted it for now until the AMD folks can rewrite it to avoid that problem. i915: - boosting fix - bump ready task fixes - GVT - reset fix, error return, TRTT handling fix amdgpu: - DMCU firmware loading fix - Polaris 10 pci id for kfd - picasso screen corruption fix - SR-IOV fixes - vega driver reload fixes - SMU locking fix - compute profile fix for kfd vmwgfx: - integer overflow fixes - dma sg fix sun4i: - HDMI phy fixes gma500: - LVDS detection fix panfrost: - devfreq selection fix" * tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm: (32 commits) Revert "drm/amd/display: Don't load DMCU for Raven 1" drm/panfrost: Select devfreq drm/gma500/cdv: Check vbt config bits when detecting lvds panels drm/vmwgfx: integer underflow in vmw_cmd_dx_set_shader() leading to an invalid read drm/vmwgfx: NULL pointer dereference from vmw_cmd_dx_view_define() drm/vmwgfx: Use the dma scatter-gather iterator to get dma addresses drm/vmwgfx: Fix compat mode shader operation drm/vmwgfx: Fix user space handle equal to zero drm/vmwgfx: Don't send drm sysfs hotplug events on initial master set drm/i915/gvt: Fix an error code in ppgtt_populate_spt_by_guest_entry() drm/i915/gvt: do not let TRTTE and 0x4dfc write passthrough to hardware drm/i915/gvt: add 0x4dfc to gen9 save-restore list drm/i915/gvt: Tiled Resources mmios are in-context mmios for gen9+ drm/i915/gvt: use cmd to restore in-context mmios to hw for gen9 platform drm/i915/gvt: emit init breadcrumb for gvt request drm/amdkfd: Fix compute profile switching drm/amdgpu: skip fw pri bo alloc for SRIOV drm/amd/powerplay: fix locking in smu_feature_set_supported() drm/amdgpu/gmc9: set vram_width properly for SR-IOV drm/amdgpu/soc15: skip reset on init ...
Tip revision: a3b25d157d5a52ef3f9296a739ee28f5d36e8968 authored by Linus Torvalds on 24 May 2019, 16:12:46 UTC
Merge tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm
Merge tag 'drm-fixes-2019-05-24-1' of git://anongit.freedesktop.org/drm/drm
Tip revision: a3b25d1
kmsg.c
// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/proc/kmsg.c
*
* Copyright (C) 1992 by Linus Torvalds
*
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/poll.h>
#include <linux/proc_fs.h>
#include <linux/fs.h>
#include <linux/syslog.h>
#include <linux/uaccess.h>
#include <asm/io.h>
extern wait_queue_head_t log_wait;
static int kmsg_open(struct inode * inode, struct file * file)
{
return do_syslog(SYSLOG_ACTION_OPEN, NULL, 0, SYSLOG_FROM_PROC);
}
static int kmsg_release(struct inode * inode, struct file * file)
{
(void) do_syslog(SYSLOG_ACTION_CLOSE, NULL, 0, SYSLOG_FROM_PROC);
return 0;
}
static ssize_t kmsg_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
if ((file->f_flags & O_NONBLOCK) &&
!do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_PROC))
return -EAGAIN;
return do_syslog(SYSLOG_ACTION_READ, buf, count, SYSLOG_FROM_PROC);
}
static __poll_t kmsg_poll(struct file *file, poll_table *wait)
{
poll_wait(file, &log_wait, wait);
if (do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_PROC))
return EPOLLIN | EPOLLRDNORM;
return 0;
}
static const struct file_operations proc_kmsg_operations = {
.read = kmsg_read,
.poll = kmsg_poll,
.open = kmsg_open,
.release = kmsg_release,
.llseek = generic_file_llseek,
};
static int __init proc_kmsg_init(void)
{
proc_create("kmsg", S_IRUSR, NULL, &proc_kmsg_operations);
return 0;
}
fs_initcall(proc_kmsg_init);
Computing file changes ...