Add a drm_sysfs_connector_remove call when we destroy the panel to make sure the connector node in sysfs gets deleted.
This is required for proper unload and re-load of this driver as a module. Without this, we would get a warning at re-load time like so:
tda998x 0-0070: found TDA19988 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 825 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x54/0x74() sysfs: cannot create duplicate filename '/class/drm/card0-HDMI-A-1' Modules linked in: [..] CPU: 0 PID: 825 Comm: modprobe Not tainted 3.15.0-rc4-00027-g9dcdef4 #82 [<c0013bb8>] (unwind_backtrace) from [<c0011824>] (show_stack+0x10/0x14) [<c0011824>] (show_stack) from [<c0034e8c>] (warn_slowpath_common+0x68/0x88) [<c0034e8c>] (warn_slowpath_common) from [<c0034edc>] (warn_slowpath_fmt+0x30/0x40) [<c0034edc>] (warn_slowpath_fmt) from [<c01243f4>] (sysfs_warn_dup+0x54/0x74) [<c01243f4>] (sysfs_warn_dup) from [<c0124708>] (sysfs_do_create_link_sd.isra.2+0xb0/0xb8) [<c0124708>] (sysfs_do_create_link_sd.isra.2) from [<c02ae37c>] (device_add+0x338/0x520) [<c02ae37c>] (device_add) from [<c02ae6e8>] (device_create_groups_vargs+0xa0/0xc4) [<c02ae6e8>] (device_create_groups_vargs) from [<c02ae758>] (device_create+0x24/0x2c) [<c02ae758>] (device_create) from [<c029b4ec>] (drm_sysfs_connector_add+0x64/0x204) [<c029b4ec>] (drm_sysfs_connector_add) from [<bf0b1b40>] (slave_modeset_init+0x120/0x1bc [tilcdc]) [<bf0b1b40>] (slave_modeset_init [tilcdc]) from [<bf0b2be8>] (tilcdc_load+0x214/0x4c0 [tilcdc]) [<bf0b2be8>] (tilcdc_load [tilcdc]) from [<c029955c>] (drm_dev_register+0xa4/0x104) [..snip..] ---[ end trace 4df8d614936ebdee ]--- [drm:drm_sysfs_connector_add] *ERROR* failed to register connector device: -17
Signed-off-by: Guido MartÃnez guido@vanguardiasur.com.ar Cc: stable@vger.kernel.org --- drivers/gpu/drm/tilcdc/tilcdc_slave.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave.c b/drivers/gpu/drm/tilcdc/tilcdc_slave.c index a37924e..28c8478 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_slave.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_slave.c @@ -176,6 +176,7 @@ struct slave_connector { static void slave_connector_destroy(struct drm_connector *connector) { struct slave_connector *slave_connector = to_slave_connector(connector); + drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); kfree(slave_connector); }