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Message-Id: <20220124184143.497065511@linuxfoundation.org>
Date: Mon, 24 Jan 2022 19:38:51 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Brian Norris <briannorris@...omium.org>,
Sam Ravnborg <sam@...nborg.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0542/1039] drm/panel: Delete panel on mipi_dsi_attach() failure
From: Brian Norris <briannorris@...omium.org>
[ Upstream commit 9bf7123bb07f98dc76acb5daa91248e6f95713cb ]
Many DSI panel drivers fail to clean up their panel references on
mipi_dsi_attach() failure, so we're leaving a dangling drm_panel
reference to freed memory. Clean that up on failure.
Noticed by inspection, after seeing similar problems on other drivers.
Therefore, I'm not marking Fixes/stable.
Signed-off-by: Brian Norris <briannorris@...omium.org>
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210923173336.3.If9e74fa9b1d6eaa9e0e5b95b2b957b992740251c@changeid
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c | 8 +++++++-
drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 8 +++++++-
drivers/gpu/drm/panel/panel-novatek-nt36672a.c | 8 +++++++-
drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c | 8 +++++++-
drivers/gpu/drm/panel/panel-ronbo-rb070d30.c | 8 +++++++-
drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c | 1 +
drivers/gpu/drm/panel/panel-samsung-sofef00.c | 1 +
drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 8 +++++++-
8 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
index 581661b506f81..f9c1f7bc8218c 100644
--- a/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
+++ b/drivers/gpu/drm/panel/panel-feiyang-fy07024di26a30d.c
@@ -227,7 +227,13 @@ static int feiyang_dsi_probe(struct mipi_dsi_device *dsi)
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->lanes = 4;
- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
}
static int feiyang_dsi_remove(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
index 733010b5e4f53..3c86ad262d5e0 100644
--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -473,7 +473,13 @@ static int jdi_panel_probe(struct mipi_dsi_device *dsi)
if (ret < 0)
return ret;
- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ jdi_panel_del(jdi);
+ return ret;
+ }
+
+ return 0;
}
static int jdi_panel_remove(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36672a.c b/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
index 533cd3934b8b7..839b263fb3c0f 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
@@ -656,7 +656,13 @@ static int nt36672a_panel_probe(struct mipi_dsi_device *dsi)
if (err < 0)
return err;
- return mipi_dsi_attach(dsi);
+ err = mipi_dsi_attach(dsi);
+ if (err < 0) {
+ drm_panel_remove(&pinfo->base);
+ return err;
+ }
+
+ return 0;
}
static int nt36672a_panel_remove(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
index 3c20beeb17819..3991f5d950af4 100644
--- a/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
+++ b/drivers/gpu/drm/panel/panel-panasonic-vvx10f034n00.c
@@ -241,7 +241,13 @@ static int wuxga_nt_panel_probe(struct mipi_dsi_device *dsi)
if (ret < 0)
return ret;
- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ wuxga_nt_panel_del(wuxga_nt);
+ return ret;
+ }
+
+ return 0;
}
static int wuxga_nt_panel_remove(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
index a3782830ae3c4..1fb579a574d9f 100644
--- a/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
+++ b/drivers/gpu/drm/panel/panel-ronbo-rb070d30.c
@@ -199,7 +199,13 @@ static int rb070d30_panel_dsi_probe(struct mipi_dsi_device *dsi)
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->lanes = 4;
- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
}
static int rb070d30_panel_dsi_remove(struct mipi_dsi_device *dsi)
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
index ea63799ff2a1e..29fde3823212b 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams452ef01.c
@@ -247,6 +247,7 @@ static int s6e88a0_ams452ef01_probe(struct mipi_dsi_device *dsi)
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
return ret;
}
diff --git a/drivers/gpu/drm/panel/panel-samsung-sofef00.c b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
index 8cb1853574bb8..6d107e14fcc55 100644
--- a/drivers/gpu/drm/panel/panel-samsung-sofef00.c
+++ b/drivers/gpu/drm/panel/panel-samsung-sofef00.c
@@ -302,6 +302,7 @@ static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
return ret;
}
diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
index b937e24dac8e0..25829a0a8e801 100644
--- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
+++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
@@ -296,7 +296,13 @@ static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
if (ret < 0)
return ret;
- return mipi_dsi_attach(dsi);
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ sharp_nt_panel_del(sharp_nt);
+ return ret;
+ }
+
+ return 0;
}
static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
--
2.34.1
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