drm/qxl: Remove format string errors

Enable format string checks for qxl_io_log and remove resulting warnings
which could lead to memory errors on different platform or just printing
wrong information.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/qxl/qxl_cmd.c

@@ -248,7 +248,7 @@ int qxl_garbage_collect(struct qxl_device *qdev)
 		}
 	}
 
-	QXL_INFO(qdev, "%s: %lld\n", __func__, i);
+	QXL_INFO(qdev, "%s: %d\n", __func__, i);
 
 	return i;
 }

drivers/gpu/drm/qxl/qxl_display.c

@@ -67,7 +67,7 @@ static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
 	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
 		  sizeof(qdev->rom->client_monitors_config));
 	if (crc != qdev->rom->client_monitors_config_crc) {
-		qxl_io_log(qdev, "crc mismatch: have %X (%d) != %X\n", crc,
+		qxl_io_log(qdev, "crc mismatch: have %X (%zd) != %X\n", crc,
 			   sizeof(qdev->rom->client_monitors_config),
 			   qdev->rom->client_monitors_config_crc);
 		return 1;

drivers/gpu/drm/qxl/qxl_drv.h

@@ -328,7 +328,7 @@ struct qxl_device {
 };
 
 /* forward declaration for QXL_INFO_IO */
-void qxl_io_log(struct qxl_device *qdev, const char *fmt, ...);
+__printf(2,3) void qxl_io_log(struct qxl_device *qdev, const char *fmt, ...);
 
 extern const struct drm_ioctl_desc qxl_ioctls[];
 extern int qxl_max_ioctl;

drivers/gpu/drm/qxl/qxl_release.c

@@ -153,7 +153,7 @@ qxl_release_alloc(struct qxl_device *qdev, int type,
 		return handle;
 	}
 	*ret = release;
-	QXL_INFO(qdev, "allocated release %lld\n", handle);
+	QXL_INFO(qdev, "allocated release %d\n", handle);
 	release->id = handle;
 	return handle;
 }