similar to: [PATCH] drm/nouveau/dispnv04: fix null pointer dereference in nv17_tv_get_ld_modes

In nv17_tv_get_ld_modes(), the return value of drm_mode_duplicate() is assigned to mode, which will lead to a NULL pointer dereference on failure of drm_mode_duplicate(). Add a check to avoid npd. Signed-off-by: Ma Ke <make_ruc2021 at 163.com> --- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c

Reviewed-by: Lyude Paul <lyude at redhat.com> I will push this and the other patch that you sent upstream in just a moment, thanks! On Tue, 2024-06-25 at 16:10 +0800, Ma Ke wrote: > In nv17_tv_get_hd_modes(), the return value of drm_mode_duplicate() > is > assigned to mode, which will lead to a possible NULL pointer > dereference > on failure of drm_mode_duplicate(). The

> In nv17_tv_get_ld_modes(), the return value of drm_mode_duplicate() is > assigned to mode, which will lead to a possible NULL pointer dereference > on failure of drm_mode_duplicate(). Add a check to avoid npd. Can a wording approach (like the following) be a better change description? A null pointer is stored in the local variable ?mode? after a call of the function

On Wed, 26 Jun 2024, Ma Ke <make24 at iscas.ac.cn> wrote: > In nouveau_connector_get_modes(), the return value of drm_mode_duplicate() > is assigned to mode, which will lead to a possible NULL pointer > dereference on failure of drm_mode_duplicate(). Add a check to avoid npd. > > Signed-off-by: Ma Ke <make24 at iscas.ac.cn> > --- >

In nv17_tv_get_hd_modes(), the return value of drm_mode_duplicate() is assigned to mode, which will lead to a NULL pointer dereference on failure of drm_mode_duplicate(). The same applies to drm_cvt_mode(). Add a check to avoid null pointer dereference. Signed-off-by: Ma Ke <make_ruc2021 at 163.com> --- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 ++++ 1 file changed, 4 insertions(+)

> In nv17_tv_get_hd_modes(), the return value of drm_mode_duplicate() is > assigned to mode, which will lead to a possible NULL pointer dereference > on failure of drm_mode_duplicate(). The same applies to drm_cvt_mode(). > Add a check to avoid null pointer dereference. Can a wording approach (like the following) be a better change description? A null pointer is stored in the local

match_string() returns the array index of a matching string. Use it instead of the open-coded implementation. Signed-off-by: YueHaibing <yuehaibing at huawei.com> --- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c index

match_string() returns the index of an array for a matching string, which can be used instead of open coded variant. Cc: Ben Skeggs <bskeggs at redhat.com> Cc: David Airlie <airlied at linux.ie> Cc: dri-devel at lists.freedesktop.org Cc: nouveau at lists.freedesktop.org Signed-off-by: Yisheng Xie <xieyisheng1 at huawei.com> --- v2: - handle err case before normal case - per

I find that the developers often just specified the numeric value when calling a macro which is defined with a parameter for access permission. As we know, these numeric value for access permission have had the corresponding macro, and that using macro can improve the robustness and readability of the code, thus, I suggest replacing the numeric parameter with the macro. Signed-off-by: Chuansheng

> In nouveau_connector_get_modes(), the return value of drm_mode_duplicate() > is assigned to mode, which will lead to a possible NULL pointer > dereference on failure of drm_mode_duplicate(). Add a check to avoid npd. 1. Can a wording approach (like the following) be a better change description? A null pointer is stored in the local variable ?mode? after a call of the function

match_string() returns the index of an array for a matching string, which can be used intead of open coded variant. Cc: Ben Skeggs <bskeggs at redhat.com> Cc: David Airlie <airlied at linux.ie> Cc: dri-devel at lists.freedesktop.org Cc: nouveau at lists.freedesktop.org Signed-off-by: Yisheng Xie <xieyisheng1 at huawei.com> --- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 13

match_string() returns the index of an array for a matching string, which can be used intead of open coded implementation. Signed-off-by: zhong jiang <zhongjiang at huawei.com> --- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c

For the purposes of the module parameters, specifies the permissions of the corresponding files in sysfs in predefined S_I* form rather than in octal notation. Withal it makes the source code more consistent. Moreover, because all parameters are readable to everyone, it is more user-friendly. $ grep S_IRUGO include/linux/stat.h #define S_IRUGO (S_IRUSR|S_IRGRP|S_IROTH) $ grep

From: poma <pomidorabelisima at gmail.com> Switch from "silly" S_* macros to "definitely more readable" octal "way" permissions, moreover to not "so restrictive" module parameters permissions. Suggested-by: Ilia Mirkin <imirkin at alum.mit.edu> Fixes: poma <pomidorabelisima at gmail.com> Tested-by: poma <pomidorabelisima at

From: Daniel Vetter <daniel.vetter at ffwll.ch> [ Upstream commit 934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ] The correct way for legacy drivers to update properties that need to do a full modeset, is to do a full modeset. Note that we don't need to call the drm_mode_config_internal helper because we're not changing any of the refcounted paramters. v2: Fixup error handling

From: Daniel Vetter <daniel.vetter at ffwll.ch> [ Upstream commit 934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ] The correct way for legacy drivers to update properties that need to do a full modeset, is to do a full modeset. Note that we don't need to call the drm_mode_config_internal helper because we're not changing any of the refcounted paramters. v2: Fixup error handling

From: Daniel Vetter <daniel.vetter at ffwll.ch> [ Upstream commit 934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ] The correct way for legacy drivers to update properties that need to do a full modeset, is to do a full modeset. Note that we don't need to call the drm_mode_config_internal helper because we're not changing any of the refcounted paramters. v2: Fixup error handling

From: Daniel Vetter <daniel.vetter at ffwll.ch> [ Upstream commit 934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ] The correct way for legacy drivers to update properties that need to do a full modeset, is to do a full modeset. Note that we don't need to call the drm_mode_config_internal helper because we're not changing any of the refcounted paramters. v2: Fixup error handling

On Tue, Nov 8, 2016 at 8:56 AM, Arnd Bergmann <arnd at arndb.de> wrote: > The newly introduced LED handling for nouveau fails to link when the > driver is built-in but the LED subsystem is a loadable module: > > drivers/gpu/drm/nouveau/nouveau.o: In function `nouveau_do_suspend': > tvnv17.c:(.text.nouveau_do_suspend+0x10): undefined reference to `nouveau_led_suspend'

While the way we find the associated connector for an encoder is just fine for legacy modesetting, it's not correct for nv50+ since that uses atomic modesetting. For reference, see the drm_encoder kdocs. Fix this by removing nouveau_encoder_connector_get(), and replacing it with nv04_encoder_get_connector(), nv50_outp_get_old_connector(), and nv50_outp_get_new_connector(). v2: * Don't