linux.git/drivers/gpu, branch v4.19.255 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git tilcdc: tilcdc_external: fix an incorrect NULL check on list iterator 2022-07-29T15:10:35+00:00 Xiaomeng Tong xiam0nd.tong@gmail.com 2022-03-27T06:15:16+00:00 761785e6071211d216fd33477df2aa0624e2202f [ Upstream commit 8b917cbe38e9b0d002492477a9fc2bfee2412ce4 ] The bug is here: if (!encoder) { The list iterator value 'encoder' will *always* be set and non-NULL by list_for_each_entry(), so it is incorrect to assume that the iterator value will be NULL if the list is empty or no element is found. To fix the bug, use a new variable 'iter' as the list iterator, while use the original variable 'encoder' as a dedicated pointer to point to the found element. Cc: stable@vger.kernel.org Fixes: ec9eab097a500 ("drm/tilcdc: Add drm bridge support for attaching drm bridge drivers") Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com> Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi> Tested-by: Jyri Sarha <jyri.sarha@iki.fi> Signed-off-by: Jyri Sarha <jyri.sarha@iki.fi> Link: https://patchwork.freedesktop.org/patch/msgid/20220327061516.5076-1-xiam0nd.tong@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 8b917cbe38e9b0d002492477a9fc2bfee2412ce4 ]

The bug is here:
	if (!encoder) {

The list iterator value 'encoder' will *always* be set and non-NULL
by list_for_each_entry(), so it is incorrect to assume that the
iterator value will be NULL if the list is empty or no element
is found.

To fix the bug, use a new variable 'iter' as the list iterator,
while use the original variable 'encoder' as a dedicated pointer
to point to the found element.

Cc: stable@vger.kernel.org
Fixes: ec9eab097a500 ("drm/tilcdc: Add drm bridge support for attaching drm bridge drivers")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Tested-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Jyri Sarha <jyri.sarha@iki.fi>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327061516.5076-1-xiam0nd.tong@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm/tilcdc: Remove obsolete crtc_mode_valid() hack 2022-07-29T15:10:35+00:00 Jyri Sarha jsarha@ti.com 2019-08-02T12:55:22+00:00 15642852eae793ff8fe1d47a0c71fe6cda5f0e2d [ Upstream commit 57d8396504b3a93f284e51b866740a3e7419a3d9 ] Earlier there were no mode_valid() helper for crtc and tilcdc had a hack to over come this limitation. But now the mode_valid() helper is there (has been since v4.13), so it is about time to get rid of that hack. Signed-off-by: Jyri Sarha <jsarha@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/ <5c4dcb5b1e7975bd2b7ca86f7addf219cd0f9a06.1564750248.git.jsarha@ti.com Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 57d8396504b3a93f284e51b866740a3e7419a3d9 ]

Earlier there were no mode_valid() helper for crtc and tilcdc had a
hack to over come this limitation. But now the mode_valid() helper is
there (has been since v4.13), so it is about time to get rid of that
hack.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ <5c4dcb5b1e7975bd2b7ca86f7addf219cd0f9a06.1564750248.git.jsarha@ti.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm: remove drm_fb_helper_modinit 2022-07-02T14:27:38+00:00 Christoph Hellwig hch@lst.de 2021-02-02T12:13:23+00:00 56acf421b6d7db1c5ae3b6fb6ea040a8e89eee95 commit bf22c9ec39da90ce866d5f625d616f28bc733dc1 upstream. drm_fb_helper_modinit has a lot of boilerplate for what is not very simple functionality. Just open code it in the only caller using IS_ENABLED and IS_MODULE, and skip the find_module check as a request_module is harmless if the module is already loaded (and not other caller has this find_module check either). Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit bf22c9ec39da90ce866d5f625d616f28bc733dc1 upstream.

drm_fb_helper_modinit has a lot of boilerplate for what is not very
simple functionality.  Just open code it in the only caller using
IS_ENABLED and IS_MODULE, and skip the find_module check as a
request_module is harmless if the module is already loaded (and not
other caller has this find_module check either).

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/radeon: fix a possible null pointer dereference 2022-06-14T14:59:38+00:00 Gong Yuanjun ruc_gongyuanjun@163.com 2022-05-17T09:57:00+00:00 8a89bfeef9abe93371e3ea8796377f2d132eee29 [ Upstream commit a2b28708b645c5632dc93669ab06e97874c8244f ] In radeon_fp_native_mode(), 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. The failure status of drm_cvt_mode() on the other path is checked too. Signed-off-by: Gong Yuanjun <ruc_gongyuanjun@163.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit a2b28708b645c5632dc93669ab06e97874c8244f ]

In radeon_fp_native_mode(), 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.

The failure status of drm_cvt_mode() on the other path is checked too.

Signed-off-by: Gong Yuanjun <ruc_gongyuanjun@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drm: imx: fix compiler warning with gcc-12 2022-06-14T14:59:36+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-06-08T23:59:29+00:00 b78299cee32270333b70312c737d67eec245b690 [ Upstream commit 7aefd8b53815274f3ef398d370a3c9b27dd9f00c ] Gcc-12 correctly warned about this code using a non-NULL pointer as a truth value: drivers/gpu/drm/imx/ipuv3-crtc.c: In function ‘ipu_crtc_disable_planes’: drivers/gpu/drm/imx/ipuv3-crtc.c:72:21: error: the comparison will always evaluate as ‘true’ for the address of ‘plane’ will never be NULL [-Werror=address] 72 | if (&ipu_crtc->plane[1] && plane == &ipu_crtc->plane[1]->base) | ^ due to the extraneous '&' address-of operator. Philipp Zabel points out that The mistake had no adverse effect since the following condition doesn't actually dereference the NULL pointer, but the intent of the code was obviously to check for it, not to take the address of the member. Fixes: eb8c88808c83 ("drm/imx: add deferred plane disabling") Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 7aefd8b53815274f3ef398d370a3c9b27dd9f00c ]

Gcc-12 correctly warned about this code using a non-NULL pointer as a
truth value:

  drivers/gpu/drm/imx/ipuv3-crtc.c: In function ‘ipu_crtc_disable_planes’:
  drivers/gpu/drm/imx/ipuv3-crtc.c:72:21: error: the comparison will always evaluate as ‘true’ for the address of ‘plane’ will never be NULL [-Werror=address]
     72 |                 if (&ipu_crtc->plane[1] && plane == &ipu_crtc->plane[1]->base)
        |                     ^

due to the extraneous '&' address-of operator.

Philipp Zabel points out that The mistake had no adverse effect since
the following condition doesn't actually dereference the NULL pointer,
but the intent of the code was obviously to check for it, not to take
the address of the member.

Fixes: eb8c88808c83 ("drm/imx: add deferred plane disabling")
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
gma500: fix an incorrect NULL check on list iterator 2022-06-14T14:59:30+00:00 Xiaomeng Tong xiam0nd.tong@gmail.com 2022-03-27T05:20:28+00:00 4c10e7febe28e2b88eea8d7ae91c6f12fdef4aac commit bdef417d84536715145f6dc9cc3275c46f26295a upstream. The bug is here: return crtc; The list iterator value 'crtc' will *always* be set and non-NULL by list_for_each_entry(), so it is incorrect to assume that the iterator value will be NULL if the list is empty or no element is found. To fix the bug, return 'crtc' when found, otherwise return NULL. Cc: stable@vger.kernel.org fixes: 89c78134cc54d ("gma500: Add Poulsbo support") Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com> Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220327052028.2013-1-xiam0nd.tong@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit bdef417d84536715145f6dc9cc3275c46f26295a upstream.

The bug is here:
	return crtc;

The list iterator value 'crtc' will *always* be set and non-NULL by
list_for_each_entry(), so it is incorrect to assume that the iterator
value will be NULL if the list is empty or no element is found.

To fix the bug, return 'crtc' when found, otherwise return NULL.

Cc: stable@vger.kernel.org
fixes: 89c78134cc54d ("gma500: Add Poulsbo support")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327052028.2013-1-xiam0nd.tong@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/bridge: analogix_dp: Grab runtime PM reference for DP-AUX 2022-06-14T14:59:28+00:00 Brian Norris briannorris@chromium.org 2022-03-02T02:11:38+00:00 97f35a4c66c6c4d8d1759476ab975f1a5a1bc47d commit 8fb6c44fe8468f92ac7b8bbfcca4404a4e88645f upstream. If the display is not enable()d, then we aren't holding a runtime PM reference here. Thus, it's easy to accidentally cause a hang, if user space is poking around at /dev/drm_dp_aux0 at the "wrong" time. Let's get a runtime PM reference, and check that we "see" the panel. Don't force any panel power-up, etc., because that can be intrusive, and that's not what other drivers do (see drivers/gpu/drm/bridge/ti-sn65dsi86.c and drivers/gpu/drm/bridge/parade-ps8640.c.) Fixes: 0d97ad03f422 ("drm/bridge: analogix_dp: Remove duplicated code") Cc: <stable@vger.kernel.org> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Brian Norris <briannorris@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220301181107.v4.1.I773a08785666ebb236917b0c8e6c05e3de471e75@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 8fb6c44fe8468f92ac7b8bbfcca4404a4e88645f upstream.

If the display is not enable()d, then we aren't holding a runtime PM
reference here. Thus, it's easy to accidentally cause a hang, if user
space is poking around at /dev/drm_dp_aux0 at the "wrong" time.

Let's get a runtime PM reference, and check that we "see" the panel.
Don't force any panel power-up, etc., because that can be intrusive, and
that's not what other drivers do (see
drivers/gpu/drm/bridge/ti-sn65dsi86.c and
drivers/gpu/drm/bridge/parade-ps8640.c.)

Fixes: 0d97ad03f422 ("drm/bridge: analogix_dp: Remove duplicated code")
Cc: <stable@vger.kernel.org>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220301181107.v4.1.I773a08785666ebb236917b0c8e6c05e3de471e75@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/nouveau/clk: Fix an incorrect NULL check on list iterator 2022-06-14T14:59:28+00:00 Xiaomeng Tong xiam0nd.tong@gmail.com 2022-03-27T07:58:24+00:00 64d8ad57c93460e6ff8d1c519af762bc5c66dfbb commit 1c3b2a27def609473ed13b1cd668cb10deab49b4 upstream. The bug is here: if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp)) return cstate; The list iterator value 'cstate' will *always* be set and non-NULL by list_for_each_entry_from_reverse(), so it is incorrect to assume that the iterator value will be unchanged if the list is empty or no element is found (In fact, it will be a bogus pointer to an invalid structure object containing the HEAD). Also it missed a NULL check at callsite and may lead to invalid memory access after that. To fix this bug, just return 'encoder' when found, otherwise return NULL. And add the NULL check. Cc: stable@vger.kernel.org Fixes: 1f7f3d91ad38a ("drm/nouveau/clk: Respect voltage limits in nvkm_cstate_prog") Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220327075824.11806-1-xiam0nd.tong@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1c3b2a27def609473ed13b1cd668cb10deab49b4 upstream.

The bug is here:
	if (nvkm_cstate_valid(clk, cstate, max_volt, clk->temp))
		return cstate;

The list iterator value 'cstate' will *always* be set and non-NULL
by list_for_each_entry_from_reverse(), so it is incorrect to assume
that the iterator value will be unchanged if the list is empty or no
element is found (In fact, it will be a bogus pointer to an invalid
structure object containing the HEAD). Also it missed a NULL check
at callsite and may lead to invalid memory access after that.

To fix this bug, just return 'encoder' when found, otherwise return
NULL. And add the NULL check.

Cc: stable@vger.kernel.org
Fixes: 1f7f3d91ad38a ("drm/nouveau/clk: Respect voltage limits in nvkm_cstate_prog")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220327075824.11806-1-xiam0nd.tong@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm/amdgpu/cs: make commands with 0 chunks illegal behaviour. 2022-06-14T14:59:28+00:00 Dave Airlie airlied@redhat.com 2022-05-23T00:24:18+00:00 15c3bcc9b5349d40207e5f8d4d799b8b4b7d13b8 commit 31ab27b14daaa75541a415c6794d6f3567fea44a upstream. Submitting a cs with 0 chunks, causes an oops later, found trying to execute the wrong userspace driver. MESA_LOADER_DRIVER_OVERRIDE=v3d glxinfo [172536.665184] BUG: kernel NULL pointer dereference, address: 00000000000001d8 [172536.665188] #PF: supervisor read access in kernel mode [172536.665189] #PF: error_code(0x0000) - not-present page [172536.665191] PGD 6712a0067 P4D 6712a0067 PUD 5af9ff067 PMD 0 [172536.665195] Oops: 0000 [#1] SMP NOPTI [172536.665197] CPU: 7 PID: 2769838 Comm: glxinfo Tainted: P O 5.10.81 #1-NixOS [172536.665199] Hardware name: To be filled by O.E.M. To be filled by O.E.M./CROSSHAIR V FORMULA-Z, BIOS 2201 03/23/2015 [172536.665272] RIP: 0010:amdgpu_cs_ioctl+0x96/0x1ce0 [amdgpu] [172536.665274] Code: 75 18 00 00 4c 8b b2 88 00 00 00 8b 46 08 48 89 54 24 68 49 89 f7 4c 89 5c 24 60 31 d2 4c 89 74 24 30 85 c0 0f 85 c0 01 00 00 <48> 83 ba d8 01 00 00 00 48 8b b4 24 90 00 00 00 74 16 48 8b 46 10 [172536.665276] RSP: 0018:ffffb47c0e81bbe0 EFLAGS: 00010246 [172536.665277] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [172536.665278] RDX: 0000000000000000 RSI: ffffb47c0e81be28 RDI: ffffb47c0e81bd68 [172536.665279] RBP: ffff936524080010 R08: 0000000000000000 R09: ffffb47c0e81be38 [172536.665281] R10: ffff936524080010 R11: ffff936524080000 R12: ffffb47c0e81bc40 [172536.665282] R13: ffffb47c0e81be28 R14: ffff9367bc410000 R15: ffffb47c0e81be28 [172536.665283] FS: 00007fe35e05d740(0000) GS:ffff936c1edc0000(0000) knlGS:0000000000000000 [172536.665284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [172536.665286] CR2: 00000000000001d8 CR3: 0000000532e46000 CR4: 00000000000406e0 [172536.665287] Call Trace: [172536.665322] ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu] [172536.665332] drm_ioctl_kernel+0xaa/0xf0 [drm] [172536.665338] drm_ioctl+0x201/0x3b0 [drm] [172536.665369] ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu] [172536.665372] ? selinux_file_ioctl+0x135/0x230 [172536.665399] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] [172536.665403] __x64_sys_ioctl+0x83/0xb0 [172536.665406] do_syscall_64+0x33/0x40 [172536.665409] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2018 Signed-off-by: Dave Airlie <airlied@redhat.com> Cc: stable@vger.kernel.org Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 31ab27b14daaa75541a415c6794d6f3567fea44a upstream.

Submitting a cs with 0 chunks, causes an oops later, found trying
to execute the wrong userspace driver.

MESA_LOADER_DRIVER_OVERRIDE=v3d glxinfo

[172536.665184] BUG: kernel NULL pointer dereference, address: 00000000000001d8
[172536.665188] #PF: supervisor read access in kernel mode
[172536.665189] #PF: error_code(0x0000) - not-present page
[172536.665191] PGD 6712a0067 P4D 6712a0067 PUD 5af9ff067 PMD 0
[172536.665195] Oops: 0000 [#1] SMP NOPTI
[172536.665197] CPU: 7 PID: 2769838 Comm: glxinfo Tainted: P           O      5.10.81 #1-NixOS
[172536.665199] Hardware name: To be filled by O.E.M. To be filled by O.E.M./CROSSHAIR V FORMULA-Z, BIOS 2201 03/23/2015
[172536.665272] RIP: 0010:amdgpu_cs_ioctl+0x96/0x1ce0 [amdgpu]
[172536.665274] Code: 75 18 00 00 4c 8b b2 88 00 00 00 8b 46 08 48 89 54 24 68 49 89 f7 4c 89 5c 24 60 31 d2 4c 89 74 24 30 85 c0 0f 85 c0 01 00 00 <48> 83 ba d8 01 00 00 00 48 8b b4 24 90 00 00 00 74 16 48 8b 46 10
[172536.665276] RSP: 0018:ffffb47c0e81bbe0 EFLAGS: 00010246
[172536.665277] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[172536.665278] RDX: 0000000000000000 RSI: ffffb47c0e81be28 RDI: ffffb47c0e81bd68
[172536.665279] RBP: ffff936524080010 R08: 0000000000000000 R09: ffffb47c0e81be38
[172536.665281] R10: ffff936524080010 R11: ffff936524080000 R12: ffffb47c0e81bc40
[172536.665282] R13: ffffb47c0e81be28 R14: ffff9367bc410000 R15: ffffb47c0e81be28
[172536.665283] FS:  00007fe35e05d740(0000) GS:ffff936c1edc0000(0000) knlGS:0000000000000000
[172536.665284] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[172536.665286] CR2: 00000000000001d8 CR3: 0000000532e46000 CR4: 00000000000406e0
[172536.665287] Call Trace:
[172536.665322]  ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu]
[172536.665332]  drm_ioctl_kernel+0xaa/0xf0 [drm]
[172536.665338]  drm_ioctl+0x201/0x3b0 [drm]
[172536.665369]  ? amdgpu_cs_find_mapping+0x110/0x110 [amdgpu]
[172536.665372]  ? selinux_file_ioctl+0x135/0x230
[172536.665399]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[172536.665403]  __x64_sys_ioctl+0x83/0xb0
[172536.665406]  do_syscall_64+0x33/0x40
[172536.665409]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2018
Signed-off-by: Dave Airlie <airlied@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drm: msm: fix possible memory leak in mdp5_crtc_cursor_set() 2022-06-14T14:59:23+00:00 Hangyu Hua hbh25y@gmail.com 2022-05-09T06:11:25+00:00 f8cd192752a1f613b14eee77783c6f0aebb49691 [ Upstream commit 947a844bb3ebff0f4736d244d792ce129f6700d7 ] drm_gem_object_lookup will call drm_gem_object_get inside. So cursor_bo needs to be put when msm_gem_get_and_pin_iova fails. Fixes: e172d10a9c4a ("drm/msm/mdp5: Add hardware cursor support") Signed-off-by: Hangyu Hua <hbh25y@gmail.com> Link: https://lore.kernel.org/r/20220509061125.18585-1-hbh25y@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 947a844bb3ebff0f4736d244d792ce129f6700d7 ]

drm_gem_object_lookup will call drm_gem_object_get inside. So cursor_bo
needs to be put when msm_gem_get_and_pin_iova fails.

Fixes: e172d10a9c4a ("drm/msm/mdp5: Add hardware cursor support")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Link: https://lore.kernel.org/r/20220509061125.18585-1-hbh25y@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>