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-rw-r--r--drivers/bus/mhi/core/init.c6
-rw-r--r--drivers/bus/mhi/core/main.c5
-rw-r--r--include/linux/mhi.h2
3 files changed, 4 insertions, 9 deletions
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index b38359c480ea..2af08d57ec28 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -812,10 +812,8 @@ int mhi_register_controller(struct mhi_controller *mhi_cntrl,
if (!mhi_cntrl)
return -EINVAL;
- if (!mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put)
- return -EINVAL;
-
- if (!mhi_cntrl->status_cb || !mhi_cntrl->link_status)
+ if (!mhi_cntrl->runtime_get || !mhi_cntrl->runtime_put ||
+ !mhi_cntrl->status_cb)
return -EINVAL;
ret = parse_config(mhi_cntrl, config);
diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 55928feea0c9..f8401535e61a 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -20,9 +20,8 @@ int __must_check mhi_read_reg(struct mhi_controller *mhi_cntrl,
{
u32 tmp = readl(base + offset);
- /* If there is any unexpected value, query the link status */
- if (PCI_INVALID_READ(tmp) &&
- mhi_cntrl->link_status(mhi_cntrl))
+ /* If the value is invalid, the link is down */
+ if (PCI_INVALID_READ(tmp))
return -EIO;
*out = tmp;
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 5642806360f3..c80ba559face 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -335,7 +335,6 @@ struct mhi_controller_config {
* @syserr_worker: System error worker
* @state_event: State change event
* @status_cb: CB function to notify power states of the device (required)
- * @link_status: CB function to query link status of the device (required)
* @wake_get: CB function to assert device wake (optional)
* @wake_put: CB function to de-assert device wake (optional)
* @wake_toggle: CB function to assert and de-assert device wake (optional)
@@ -417,7 +416,6 @@ struct mhi_controller {
void (*status_cb)(struct mhi_controller *mhi_cntrl,
enum mhi_callback cb);
- int (*link_status)(struct mhi_controller *mhi_cntrl);
void (*wake_get)(struct mhi_controller *mhi_cntrl, bool override);
void (*wake_put)(struct mhi_controller *mhi_cntrl, bool override);
void (*wake_toggle)(struct mhi_controller *mhi_cntrl);