diff options
| -rw-r--r-- | drivers/thunderbolt/tb.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index aea668c40d27..496dcd03ede1 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -277,6 +277,8 @@ static inline struct tb_port *tb_port_at(u64 route, struct tb_switch *sw) static inline int tb_sw_read(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { + if (sw->is_unplugged) + return -ENODEV; return tb_cfg_read(sw->tb->ctl, buffer, tb_route(sw), @@ -289,6 +291,8 @@ static inline int tb_sw_read(struct tb_switch *sw, void *buffer, static inline int tb_sw_write(struct tb_switch *sw, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { + if (sw->is_unplugged) + return -ENODEV; return tb_cfg_write(sw->tb->ctl, buffer, tb_route(sw), @@ -301,6 +305,8 @@ static inline int tb_sw_write(struct tb_switch *sw, void *buffer, static inline int tb_port_read(struct tb_port *port, void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { + if (port->sw->is_unplugged) + return -ENODEV; return tb_cfg_read(port->sw->tb->ctl, buffer, tb_route(port->sw), @@ -313,6 +319,8 @@ static inline int tb_port_read(struct tb_port *port, void *buffer, static inline int tb_port_write(struct tb_port *port, const void *buffer, enum tb_cfg_space space, u32 offset, u32 length) { + if (port->sw->is_unplugged) + return -ENODEV; return tb_cfg_write(port->sw->tb->ctl, buffer, tb_route(port->sw), |