[PATCH 1/3] slimbus: core: check get_addr before removing laddr ida

From: Srinivas Kandagatla
Date: Fri Sep 25 2020 - 05:56:12 EST


logical address can be either assigned by the SLIMBus controller or the core.
Core uses IDA in cases where get_addr callback is not provided by the
controller.
Core already has this check while allocating IDR, however during absence
reporting this is not checked. This patch fixes this issue.

Fixes: 46a2bb5a7f7ea("slimbus: core: Add slim controllers support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
drivers/slimbus/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/slimbus/core.c b/drivers/slimbus/core.c
index ae1e248a8fb8..58b63ae0e75a 100644
--- a/drivers/slimbus/core.c
+++ b/drivers/slimbus/core.c
@@ -326,8 +326,8 @@ void slim_report_absent(struct slim_device *sbdev)
mutex_lock(&ctrl->lock);
sbdev->is_laddr_valid = false;
mutex_unlock(&ctrl->lock);
-
- ida_simple_remove(&ctrl->laddr_ida, sbdev->laddr);
+ if (!ctrl->get_laddr)
+ ida_simple_remove(&ctrl->laddr_ida, sbdev->laddr);
slim_device_update_status(sbdev, SLIM_DEVICE_STATUS_DOWN);
}
EXPORT_SYMBOL_GPL(slim_report_absent);
--
2.21.0