[PATCH 1/2] drm/qxl: remove unused `count` variable from `qxl_surface_id_alloc()`

From: Miguel Ojeda
Date: Wed Mar 27 2024 - 14:01:27 EST


Clang 14 in an (essentially) defconfig loongarch64 build for next-20240326
reports [1]:

drivers/gpu/drm/qxl/qxl_cmd.c:424:6: error: variable 'count' set
but not used [-Werror,-Wunused-but-set-variable]

The variable is already unused in the version that got into the tree.

Thus remove the unused variable.

Fixes: f64122c1f6ad ("drm: add new QXL driver. (v1.4)")
Closes: https://lore.kernel.org/lkml/CANiq72mjc5t4n25SQvYSrOEhxxpXYPZ4pPzneSJHEnc3qApu2Q@xxxxxxxxxxxxxx/
Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
---
Given there is a loop going on here, it would be good to double-check whether
this variable was supposed to be used for something useful or if it was just a
remnant of a version previous to v1.4.

drivers/gpu/drm/qxl/qxl_cmd.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index 281edab518cd..d6ea01f3797b 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
@@ -421,7 +421,6 @@ int qxl_surface_id_alloc(struct qxl_device *qdev,
{
uint32_t handle;
int idr_ret;
- int count = 0;
again:
idr_preload(GFP_ATOMIC);
spin_lock(&qdev->surf_id_idr_lock);
@@ -433,7 +432,6 @@ int qxl_surface_id_alloc(struct qxl_device *qdev,
handle = idr_ret;

if (handle >= qdev->rom->n_surfaces) {
- count++;
spin_lock(&qdev->surf_id_idr_lock);
idr_remove(&qdev->surf_id_idr, handle);
spin_unlock(&qdev->surf_id_idr_lock);

base-commit: 26074e1be23143b2388cacb36166766c235feb7c
--
2.44.0