kernel/linux.git/drivers/gpu/drm/tegra, branch v6.6.40

drm/tegra: put drm_gem_object ref on error in tegra_fb_create

2024-03-26T22:19:50+00:00

[ Upstream commit 32e5a120a5105bce01561978ee55aee8e40ac0dc ] Inside tegra_fb_create(), drm_gem_object_lookup() increments ref count of the found object. But if the following size check fails then the last found object's ref count should be put there as the unreferencing loop can't detect this situation. Found by Linux Verification Center (linuxtesting.org). Fixes: de2ba664c30f ("gpu: host1x: drm: Add memory manager and fb") Signed-off-by: Fedor Pchelkin Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20231215093356.12067-1-pchelkin@ispras.ru Signed-off-by: Sasha Levin

drm/tegra: output: Fix missing i2c_put_adapter() in the error handling paths of tegra_output_probe()

2024-03-26T22:19:42+00:00

[ Upstream commit 2db4578ef6ffb2b52115ca0ebf897b60ec559556 ] If an error occurs after a successful of_get_i2c_adapter_by_node() call, it should be undone by a corresponding i2c_put_adapter(). Add the missing i2c_put_adapter() call. Fixes: 9be7d864cf07 ("drm/tegra: Implement panel support") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/b38604178991e1f08b2cda219103be266be2d680.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: rgb: Fix missing clk_put() in the error handling paths of tegra_dc_rgb_probe()

2024-03-26T22:19:42+00:00

[ Upstream commit 45c8034db47842b25a3ab6139d71e13b4e67b9b3 ] If clk_get_sys(..., "pll_d2_out0") fails, the clk_get_sys() call must be undone. Add the missing clk_put and a new 'put_pll_d_out0' label in the error handling path, and use it. Fixes: 0c921b6d4ba0 ("drm/tegra: dc: rgb: Allow changing PLLD rate on Tegra30+") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/0182895ead4e4730426616b0d9995954c960b634.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: rgb: Fix some error handling paths in tegra_dc_rgb_probe()

2024-03-26T22:19:42+00:00

[ Upstream commit bc456b5d93dbfdbd89f2a036f4f3d8026595f9e4 ] If an error occurs after calling tegra_output_probe(), tegra_output_remove() should be called as already done in the remove function. Fixes: 59d29c0ec93f ("drm/tegra: Allocate resources at probe time") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/0001f61eb89048bc36241629b564195689cf54b6.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: hdmi: Fix some error handling paths in tegra_hdmi_probe()

2024-03-26T22:19:41+00:00

[ Upstream commit 643ae131b8598fb2940c92c7d23fe62823a119c8 ] If an error occurs after calling tegra_output_probe(), tegra_output_remove() should be called as already done in the remove function. Fixes: 59d29c0ec93f ("drm/tegra: Allocate resources at probe time") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/9b7c564eb71977678b20abd73ee52001a51cf327.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: dsi: Fix missing pm_runtime_disable() in the error handling path of tegra_dsi_probe()

2024-03-26T22:19:41+00:00

[ Upstream commit 5286a9fc280c45b6b307ee1b07f7a997e042252c ] If an error occurs after calling pm_runtime_enable(), pm_runtime_disable() should be called as already done in the remove function. Fixes: ef8187d75265 ("drm/tegra: dsi: Implement runtime PM") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/ee4a15c9cd4b574a55cd67c30d2411239ba2cee9.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: dsi: Fix some error handling paths in tegra_dsi_probe()

2024-03-26T22:19:41+00:00

[ Upstream commit 830c1ded356369cd1303e8bb87ce3fea6e744de8 ] If an error occurs after calling tegra_output_probe(), tegra_output_remove() should be called as already done in the remove function. Fixes: dec727399a4b ("drm/tegra: Add DSI support") Signed-off-by: Christophe JAILLET Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/16820073278d031f6c474a08d5f22a255158585e.1693667005.git.christophe.jaillet@wanadoo.fr Signed-off-by: Sasha Levin

drm/tegra: dpaux: Fix PM disable depth imbalance in tegra_dpaux_probe

2024-03-26T22:19:41+00:00

[ Upstream commit 0800880f4eb789b7d299db40f2e86e056bd33a4e ] The pm_runtime_enable function increases the power disable depth, which means that we must perform a matching decrement on the error handling path to maintain balance within the given context. Additionally, we need to address the same issue for pm_runtime_get_sync. We fix this by invoking pm_runtime_disable and pm_runtime_put_sync when error returns. Fixes: 82b81b3ec1a7 ("drm/tegra: dpaux: Implement runtime PM") Signed-off-by: Zhang Shurong Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/tencent_B13DB7F6C0023C46157250A524966F326A09@qq.com Signed-off-by: Sasha Levin

drm/tegra: dsi: Add missing check for of_find_device_by_node

2024-03-26T22:19:41+00:00

[ Upstream commit afe6fcb9775882230cd29b529203eabd5d2a638d ] Add check for the return value of of_find_device_by_node() and return the error if it fails in order to avoid NULL pointer dereference. Fixes: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support") Signed-off-by: Chen Ni Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20231024080738.825553-1-nichen@iscas.ac.cn Signed-off-by: Sasha Levin

drm/tegra: Remove existing framebuffer only if we support display

2024-03-06T14:48:38+00:00

[ Upstream commit 86bf8cfda6d2a6720fa2e6e676c98f0882c9d3d7 ] Tegra DRM doesn't support display on Tegra234 and later, so make sure not to remove any existing framebuffers in that case. v2: - add comments explaining how this situation can come about - clear DRIVER_MODESET and DRIVER_ATOMIC feature bits Fixes: 6848c291a54f ("drm/aperture: Convert drivers to aperture interfaces") Signed-off-by: Thierry Reding Reviewed-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20240223150333.1401582-1-thierry.reding@gmail.com Signed-off-by: Sasha Levin