From c0cdaec47dba37eb370dd011c8ea43a94213496a Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 18 Nov 2021 14:13:14 +0300
Subject: drm/nouveau/acr: fix a couple NULL vs IS_ERR() checks
Git-commit: b371fd131fcec59f6165c80778bdc2cd1abd616b
Patch-mainline: v5.16-rc3
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The nvkm_acr_lsfw_add() function never returns NULL. It returns error
pointers on error.
Fixes: 22dcda45a3d1 ("drm/nouveau/acr: implement new subdev to replace "secure boot"")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211118111314.GB1147@kili
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c | 6 ++++--
drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c | 6 ++++--
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
index cdb1ead26d84..82b4c8e1457c 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gm200.c
@@ -207,11 +207,13 @@ int
gm200_acr_wpr_parse(struct nvkm_acr *acr)
{
const struct wpr_header *hdr = (void *)acr->wpr_fw->data;
+ struct nvkm_acr_lsfw *lsfw;
while (hdr->falcon_id != WPR_HEADER_V0_FALCON_ID_INVALID) {
wpr_header_dump(&acr->subdev, hdr);
- if (!nvkm_acr_lsfw_add(NULL, acr, NULL, (hdr++)->falcon_id))
- return -ENOMEM;
+ lsfw = nvkm_acr_lsfw_add(NULL, acr, NULL, (hdr++)->falcon_id);
+ if (IS_ERR(lsfw))
+ return PTR_ERR(lsfw);
}
return 0;
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c
index fb9132a39bb1..fd97a935a380 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/acr/gp102.c
@@ -161,11 +161,13 @@ int
gp102_acr_wpr_parse(struct nvkm_acr *acr)
{
const struct wpr_header_v1 *hdr = (void *)acr->wpr_fw->data;
+ struct nvkm_acr_lsfw *lsfw;
while (hdr->falcon_id != WPR_HEADER_V1_FALCON_ID_INVALID) {
wpr_header_v1_dump(&acr->subdev, hdr);
- if (!nvkm_acr_lsfw_add(NULL, acr, NULL, (hdr++)->falcon_id))
- return -ENOMEM;
+ lsfw = nvkm_acr_lsfw_add(NULL, acr, NULL, (hdr++)->falcon_id);
+ if (IS_ERR(lsfw))
+ return PTR_ERR(lsfw);
}
return 0;
--
2.38.1