Revision 0848814aa296ca13e4f03848f35d2d29fc7fc30c authored by Imre Deak on 05 February 2024, 13:26:31 UTC, committed by Joonas Lahtinen on 06 March 2024, 13:34:03 UTC
The DSC HW state of DP connectors is read out during driver loading and system resume in intel_modeset_update_connector_atomic_state(). This function is called for all connectors though and so the state of DSI connectors will also get updated incorrectly, triggering a WARN there wrt. the DSC decompression AUX device. Fix the above by moving the DSC state readout to a new DP connector specific sync_state() hook. This is anyway the logical place to update the connector object's state vs. the connector's atomic state. Fixes: b2608c6b3212 ("drm/i915/dp_mst: Enable MST DSC decompression for all streams") Reported-and-tested-by: Drew Davenport <ddavenport@chromium.org> Closes: https://lore.kernel.org/all/Zb0q8IDVXS0HxJyj@chromium.org Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240205132631.1588577-1-imre.deak@intel.com (cherry picked from commit a62e145981500996ea76af3d740ce0c0d74c5be0) Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
1 parent 26d2b75
configs.c
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* kernel/configs.c
* Echo the kernel .config file used to build the kernel
*
* Copyright (C) 2002 Khalid Aziz <khalid_aziz@hp.com>
* Copyright (C) 2002 Randy Dunlap <rdunlap@xenotime.net>
* Copyright (C) 2002 Al Stone <ahs3@fc.hp.com>
* Copyright (C) 2002 Hewlett-Packard Company
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
#include <linux/uaccess.h>
/*
* "IKCFG_ST" and "IKCFG_ED" are used to extract the config data from
* a binary kernel image or a module. See scripts/extract-ikconfig.
*/
asm (
" .pushsection .rodata, \"a\" \n"
" .ascii \"IKCFG_ST\" \n"
" .global kernel_config_data \n"
"kernel_config_data: \n"
" .incbin \"kernel/config_data.gz\" \n"
" .global kernel_config_data_end \n"
"kernel_config_data_end: \n"
" .ascii \"IKCFG_ED\" \n"
" .popsection \n"
);
#ifdef CONFIG_IKCONFIG_PROC
extern char kernel_config_data;
extern char kernel_config_data_end;
static ssize_t
ikconfig_read_current(struct file *file, char __user *buf,
size_t len, loff_t * offset)
{
return simple_read_from_buffer(buf, len, offset,
&kernel_config_data,
&kernel_config_data_end -
&kernel_config_data);
}
static const struct proc_ops config_gz_proc_ops = {
.proc_read = ikconfig_read_current,
.proc_lseek = default_llseek,
};
static int __init ikconfig_init(void)
{
struct proc_dir_entry *entry;
/* create the current config file */
entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL,
&config_gz_proc_ops);
if (!entry)
return -ENOMEM;
proc_set_size(entry, &kernel_config_data_end - &kernel_config_data);
return 0;
}
static void __exit ikconfig_cleanup(void)
{
remove_proc_entry("config.gz", NULL);
}
module_init(ikconfig_init);
module_exit(ikconfig_cleanup);
#endif /* CONFIG_IKCONFIG_PROC */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Randy Dunlap");
MODULE_DESCRIPTION("Echo the kernel .config file used to build the kernel");
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