From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Boris Brezillon <boris.brezillon@bootlin.com>,
Sean Paul <seanpaul@chromium.org>
Subject: [PATCH 4.17 30/31] drm/atomic: Initialize variables in drm_atomic_helper_async_check() to make gcc happy
Date: Sat, 4 Aug 2018 11:01:05 +0200 [thread overview]
Message-ID: <20180804082634.336996497@linuxfoundation.org> (raw)
In-Reply-To: <20180804082632.304529527@linuxfoundation.org>
4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Boris Brezillon <boris.brezillon@bootlin.com>
commit de2d8db395c32d121d02871819444b631f73e0b6 upstream.
drm_atomic_helper_async_check() declares the plane, old_plane_state and
new_plane_state variables to iterate over all planes of the atomic
state and make sure only one plane is enabled.
Unfortunately gcc is not smart enough to figure out that the check on
n_planes is enough to guarantee that plane, new_plane_state and
old_plane_state are initialized.
Explicitly initialize those variables to NULL to make gcc happy.
Fixes: fef9df8b5945 ("drm/atomic: initial support for asynchronous plane update")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180724133300.32023-1-boris.brezillon@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/drm_atomic_helper.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1499,8 +1499,9 @@ int drm_atomic_helper_async_check(struct
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
- struct drm_plane *plane;
- struct drm_plane_state *old_plane_state, *new_plane_state;
+ struct drm_plane *plane = NULL;
+ struct drm_plane_state *old_plane_state = NULL;
+ struct drm_plane_state *new_plane_state = NULL;
const struct drm_plane_helper_funcs *funcs;
int i, n_planes = 0;
next prev parent reply other threads:[~2018-08-04 9:03 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-04 9:00 [PATCH 4.17 00/31] 4.17.13-stable review Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 01/31] bonding: avoid lockdep confusion in bond_get_stats() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 02/31] inet: frag: enforce memory limits earlier Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 03/31] ipv4: frags: handle possible skb truesize change Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 04/31] net: dsa: Do not suspend/resume closed slave_dev Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 05/31] netlink: Fix spectre v1 gadget in netlink_create() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 06/31] net: stmmac: Fix WoL for PCI-based setups Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 07/31] rxrpc: Fix user call ID check in rxrpc_service_prealloc_one Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 08/31] net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 09/31] net/mlx5e: Set port trust mode to PCP as default Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 10/31] net/mlx5e: IPoIB, Set the netdevice sw mtu in ipoib enhanced flow Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 11/31] squashfs: more metadata hardening Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 13/31] can: ems_usb: Fix memory leak on ems_usb_disconnect() Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 14/31] net: socket: fix potential spectre v1 gadget in socketcall Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 15/31] net: socket: Fix potential spectre v1 gadget in sock_is_registered Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 16/31] virtio_balloon: fix another race between migration and ballooning Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 17/31] x86/efi: Access EFI MMIO data as unencrypted when SEV is active Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 18/31] x86/apic: Future-proof the TSC_DEADLINE quirk for SKX Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 19/31] x86/entry/64: Remove %ebx handling from error_entry/exit Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 20/31] kvm: x86: vmx: fix vpid leak Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 21/31] audit: fix potential null dereference context->module.name Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 23/31] userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails Greg Kroah-Hartman
2018-08-04 9:00 ` [PATCH 4.17 24/31] iwlwifi: add more card IDs for 9000 series Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 26/31] RDMA/uverbs: Expand primary and alt AV port checks Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 27/31] crypto: padlock-aes - Fix Nano workaround data corruption Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 28/31] drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats Greg Kroah-Hartman
2018-08-04 9:01 ` [PATCH 4.17 29/31] drm/atomic: Check old_plane_state->crtc in drm_atomic_helper_async_check() Greg Kroah-Hartman
2018-08-04 9:01 ` Greg Kroah-Hartman [this message]
2018-08-04 9:01 ` [PATCH 4.17 31/31] scsi: sg: fix minor memory leak in error path Greg Kroah-Hartman
2018-08-04 14:49 ` [PATCH 4.17 00/31] 4.17.13-stable review Guenter Roeck
2018-08-05 6:54 ` Greg Kroah-Hartman
2018-08-05 11:50 ` Naresh Kamboju
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