From: Guenter Roeck <linux@roeck-us.net>
To: Ben Skeggs <bskeggs@redhat.com>
Cc: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
linux-kernel@vger.kernel.org, Guenter Roeck <linux@roeck-us.net>
Subject: [Nouveau] [PATCH] drm/nouveau/nvkm: Replace -ENOSYS with -ENODEV
Date: Wed, 8 Sep 2021 12:08:17 -0700 [thread overview]
Message-ID: <20210908190817.1213486-1-linux@roeck-us.net> (raw)
nvkm test builds fail with the following error.
drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c:
In function 'nvkm_control_mthd_pstate_info':
drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c:60:35: error:
overflow in conversion from 'int' to '__s8' {aka 'signed char'}
changes value from '-251' to '5'
The code builds on most architectures, but fails on parisc where ENOSYS
is defined as 251. Replace the error code with -ENODEV (-19). The actual
error code does not really matter and is not passed to userspace - it
just has to be negative.
Fixes: 7238eca4cf18 ("drm/nouveau: expose pstate selection per-power source in sysfs")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c
index b0ece71aefde..ce774579c89d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/ctrl.c
@@ -57,7 +57,7 @@ nvkm_control_mthd_pstate_info(struct nvkm_control *ctrl, void *data, u32 size)
args->v0.count = 0;
args->v0.ustate_ac = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
args->v0.ustate_dc = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
- args->v0.pwrsrc = -ENOSYS;
+ args->v0.pwrsrc = -ENODEV;
args->v0.pstate = NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_UNKNOWN;
}
--
2.33.0
reply other threads:[~2021-09-08 19:08 UTC|newest]
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