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* drm: fix possible use-after-free 

* dbi: fix SPI Type 1 transfer
  * drm_fb_helper: use memcpy_io on bochs' sparc64
  * mcde: fix stability
  * panel: fix display noise on auo,kd101n80-45na
  * panel: delay HPD checks for boe_nv133fhm_n61
  * bridge: drop connector check in nwl-dsi bridge
  * bridge: set proper bridge type for adv7511
  * of: fix a double free
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Merge tag 'drm-misc-fixes-2020-07-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

 * drm: fix possible use-after-free
 * dbi: fix SPI Type 1 transfer
 * drm_fb_helper: use memcpy_io on bochs' sparc64
 * mcde: fix stability
 * panel: fix display noise on auo,kd101n80-45na
 * panel: delay HPD checks for boe_nv133fhm_n61
 * bridge: drop connector check in nwl-dsi bridge
 * bridge: set proper bridge type for adv7511
 * of: fix a double free

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20200728110446.GA8076@linux-uq9g
This commit is contained in:
Dave Airlie 2020-07-29 12:44:45 +10:00
parent 0d7869805a 8490d6a7e0
commit a4a2739beb
11 changed files with 51 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/bochs/bochs_kms.c
View File

@ -146,6 +146,7 @@ int bochs_kms_init(struct bochs_device *bochs)
bochs->dev->mode_config.preferred_depth = 24;
bochs->dev->mode_config.prefer_shadow = 0;
bochs->dev->mode_config.prefer_shadow_fbdev = 1;
bochs->dev->mode_config.fbdev_use_iomem = true;
bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
bochs->dev->mode_config.funcs = &bochs_mode_funcs;

1
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
View File

@ -1224,6 +1224,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
adv7511->bridge.funcs = &adv7511_bridge_funcs;
adv7511->bridge.of_node = dev->of_node;
adv7511->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
drm_bridge_add(&adv7511->bridge);

5
drivers/gpu/drm/bridge/nwl-dsi.c
View File

@ -917,11 +917,6 @@ static int nwl_dsi_bridge_attach(struct drm_bridge *bridge,
struct drm_panel *panel;
int ret;
if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
DRM_ERROR("Fix bridge driver to make connector optional!");
return -EINVAL;
}
ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 1, 0, &panel,
&panel_bridge);
if (ret)

6
drivers/gpu/drm/drm_fb_helper.c
View File

@ -399,7 +399,11 @@ static void drm_fb_helper_dirty_blit_real(struct drm_fb_helper *fb_helper,
unsigned int y;
for (y = clip->y1; y < clip->y2; y++) {
memcpy(dst, src, len);
if (!fb_helper->dev->mode_config.fbdev_use_iomem)
memcpy(dst, src, len);
else
memcpy_toio((void __iomem *)dst, src, len);
src += fb->pitches[0];
dst += fb->pitches[0];
}

10
drivers/gpu/drm/drm_gem.c
View File

@ -871,9 +871,6 @@ err:
* @file_priv: drm file-private structure
*
* Open an object using the global name, returning a handle and the size.
*
* This handle (of course) holds a reference to the object, so the object
* will not go away until the handle is deleted.
*/
int
drm_gem_open_ioctl(struct drm_device *dev, void *data,
@ -898,14 +895,15 @@ drm_gem_open_ioctl(struct drm_device *dev, void *data,
/* drm_gem_handle_create_tail unlocks dev->object_name_lock. */
ret = drm_gem_handle_create_tail(file_priv, obj, &handle);
drm_gem_object_put_unlocked(obj);
if (ret)
return ret;
goto err;
args->handle = handle;
args->size = obj->size;
return 0;
err:
drm_gem_object_put_unlocked(obj);
return ret;
}
/**

2
drivers/gpu/drm/drm_mipi_dbi.c
View File

@ -923,7 +923,7 @@ static int mipi_dbi_spi1_transfer(struct mipi_dbi *dbi, int dc,
}
}
tr.len = chunk;
tr.len = chunk * 2;
len -= chunk;
ret = spi_sync(spi, &m);

4
drivers/gpu/drm/drm_of.c
View File

@ -322,10 +322,8 @@ static int drm_of_lvds_get_remote_pixels_type(
* configurations by passing the endpoints explicitly to
* drm_of_lvds_get_dual_link_pixel_order().
*/
if (!current_pt || pixels_type != current_pt) {
of_node_put(remote_port);
if (!current_pt || pixels_type != current_pt)
return -EINVAL;
}
}
return pixels_type;

11
drivers/gpu/drm/mcde/mcde_display.c
View File

@ -1060,9 +1060,14 @@ static void mcde_display_update(struct drm_simple_display_pipe *pipe,
*/
if (fb) {
mcde_set_extsrc(mcde, drm_fb_cma_get_gem_addr(fb, pstate, 0));
if (!mcde->video_mode)
/* Send a single frame using software sync */
mcde_display_send_one_frame(mcde);
if (!mcde->video_mode) {
/*
* Send a single frame using software sync if the flow
* is not active yet.
*/
if (mcde->flow_active == 0)
mcde_display_send_one_frame(mcde);
}
dev_info_once(mcde->dev, "sent first display update\n");
} else {
/*

6
drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
View File

@ -615,9 +615,9 @@ static const struct panel_desc boe_tv101wum_nl6_desc = {
static const struct drm_display_mode auo_kd101n80_45na_default_mode = {
.clock = 157000,
.hdisplay = 1200,
.hsync_start = 1200 + 80,
.hsync_end = 1200 + 80 + 24,
.htotal = 1200 + 80 + 24 + 36,
.hsync_start = 1200 + 60,
.hsync_end = 1200 + 60 + 24,
.htotal = 1200 + 60 + 24 + 56,
.vdisplay = 1920,
.vsync_start = 1920 + 16,
.vsync_end = 1920 + 16 + 4,

16
drivers/gpu/drm/panel/panel-simple.c
View File

@ -1250,7 +1250,21 @@ static const struct panel_desc boe_nv133fhm_n61 = {
.height = 165,
},
.delay = {
.hpd_absent_delay = 200,
/*
* When power is first given to the panel there's a short
* spike on the HPD line. It was explained that this spike
* was until the TCON data download was complete. On
* one system this was measured at 8 ms. We'll put 15 ms
* in the prepare delay just to be safe and take it away
* from the hpd_absent_delay (which would otherwise be 200 ms)
* to handle this. That means:
* - If HPD isn't hooked up you still have 200 ms delay.
* - If HPD is hooked up we won't try to look at it for the
* first 15 ms.
*/
.prepare = 15,
.hpd_absent_delay = 185,
.unprepare = 500,
},
.bus_format = MEDIA_BUS_FMT_RGB888_1X24,

12
include/drm/drm_mode_config.h
View File

@ -865,6 +865,18 @@ struct drm_mode_config {
*/
bool prefer_shadow_fbdev;
/**
* @fbdev_use_iomem:
*
* Set to true if framebuffer reside in iomem.
* When set to true memcpy_toio() is used when copying the framebuffer in
* drm_fb_helper.drm_fb_helper_dirty_blit_real().
*
* FIXME: This should be replaced with a per-mapping is_iomem
* flag (like ttm does), and then used everywhere in fbdev code.
*/
bool fbdev_use_iomem;
/**
* @quirk_addfb_prefer_xbgr_30bpp:
*