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authorDave Airlie <airlied@redhat.com>2021-04-02 04:52:45 +1000
committerDave Airlie <airlied@redhat.com>2021-04-02 04:53:16 +1000
commit6fdb8e5aba6a33fe5f1a0bd1bcf0cf2884437ead (patch)
tree08448614a633042bdcfcfcb7334377196f190346
parenta0497251f2b055a137d62ed065286ba999647b3c (diff)
parent33ce7f2f95cabb5834cf0906308a5cb6103976da (diff)
Merge tag 'imx-drm-fixes-2021-04-01' of git://git.pengutronix.de/git/pza/linux into drm-fixes
drm/imx: imx-drm-core and imx-ldb fixes Fix a memory leak in an error path during DRM device initialization, fix the LDB driver to register channel 1 even if channel 0 is unused, and fix an out of bounds array access warning in the LDB driver. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210401092235.GA13586@pengutronix.de
-rw-r--r--drivers/gpu/drm/imx/imx-drm-core.c2
-rw-r--r--drivers/gpu/drm/imx/imx-ldb.c12
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index d1a9841adeed..e6a88c8cbd69 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -215,7 +215,7 @@ static int imx_drm_bind(struct device *dev)
ret = drmm_mode_config_init(drm);
if (ret)
- return ret;
+ goto err_kms;
ret = drm_vblank_init(drm, MAX_CRTC);
if (ret)
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index dbfe39e2f7f6..ffdc492c5bc5 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -197,6 +197,11 @@ static void imx_ldb_encoder_enable(struct drm_encoder *encoder)
int dual = ldb->ldb_ctrl & LDB_SPLIT_MODE_EN;
int mux = drm_of_encoder_active_port_id(imx_ldb_ch->child, encoder);
+ if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) {
+ dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux);
+ return;
+ }
+
drm_panel_prepare(imx_ldb_ch->panel);
if (dual) {
@@ -255,6 +260,11 @@ imx_ldb_encoder_atomic_mode_set(struct drm_encoder *encoder,
int mux = drm_of_encoder_active_port_id(imx_ldb_ch->child, encoder);
u32 bus_format = imx_ldb_ch->bus_format;
+ if (mux < 0 || mux >= ARRAY_SIZE(ldb->clk_sel)) {
+ dev_warn(ldb->dev, "%s: invalid mux %d\n", __func__, mux);
+ return;
+ }
+
if (mode->clock > 170000) {
dev_warn(ldb->dev,
"%s: mode exceeds 170 MHz pixel clock\n", __func__);
@@ -583,7 +593,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data)
struct imx_ldb_channel *channel = &imx_ldb->channel[i];
if (!channel->ldb)
- break;
+ continue;
ret = imx_ldb_register(drm, channel);
if (ret)

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