linux-kernel - drivers/gpu/drm/qxl/qxl_cmd.c:424:6: error: variable 'count' set but not used

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Date: Tue, 26 Mar 2024 19:04:34 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Dave Airlie <airlied@...hat.com>, Gerd Hoffmann <kraxel@...hat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	virtualization@...ts.linux.dev, spice-devel@...ts.freedesktop.org, 
	dri-devel <dri-devel@...ts.freedesktop.org>, 
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: drivers/gpu/drm/qxl/qxl_cmd.c:424:6: error: variable 'count' set but
 not used

Hi,

In today's next, I got:

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

`count` seems to be there since commit f64122c1f6ad ("drm: add new QXL
driver. (v1.4)").

Untested diff below -- if you want a formal patch, please let me know.

Cheers,
Miguel

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);