diff options
| author | Gustavo Padovan <gustavo.padovan@collabora.com> | 2017-12-04 16:04:45 -0200 |
|---|---|---|
| committer | Gustavo Padovan <gustavo.padovan@collabora.com> | 2017-12-04 16:04:45 -0200 |
| commit | 7b47c66cfa203288c43851260edeeb0fae56f692 (patch) | |
| tree | fa729735fdaf1d77fbbf13062fd53c31b59d682d /drivers/spi/spi.c | |
| parent | ca0e68e21aae10220eff71a297e7d794425add77 (diff) | |
| parent | ca797d29cd63e7b71b4eea29aff3b1cefd1ecb59 (diff) | |
Merge arlied/drm-next into drm-misc-next
We need to pull 66660d4cf21b (drm: add connector info/property for
non-desktop displays [v2]) into drm-misc-next to continue the development
of the display rotation series.
Effectively this also pulls 4.15-r2 into drm-misc-next.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e8b5a5e21b2e..b33a727a0158 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2200,7 +2200,7 @@ static void devm_spi_unregister(struct device *dev, void *res) * Context: can sleep * * Register a SPI device as with spi_register_controller() which will - * automatically be unregister + * automatically be unregistered and freed. * * Return: zero on success, else a negative error code. */ @@ -2241,15 +2241,18 @@ static int __unregister(struct device *dev, void *null) * only ones directly touching chip registers. * * This must be called from context that can sleep. + * + * Note that this function also drops a reference to the controller. */ void spi_unregister_controller(struct spi_controller *ctlr) { struct spi_controller *found; + int id = ctlr->bus_num; int dummy; /* First make sure that this controller was ever added */ mutex_lock(&board_lock); - found = idr_find(&spi_master_idr, ctlr->bus_num); + found = idr_find(&spi_master_idr, id); mutex_unlock(&board_lock); if (found != ctlr) { dev_dbg(&ctlr->dev, @@ -2269,7 +2272,7 @@ void spi_unregister_controller(struct spi_controller *ctlr) device_unregister(&ctlr->dev); /* free bus id */ mutex_lock(&board_lock); - idr_remove(&spi_master_idr, ctlr->bus_num); + idr_remove(&spi_master_idr, id); mutex_unlock(&board_lock); } EXPORT_SYMBOL_GPL(spi_unregister_controller); |