blk: add a helper function, blk_probe_or_unbind()

This function will be commonly used in block device drivers
in the succeeding patches.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/blk.h b/include/blk.h
index dde2173257..133204a82e 100644
--- a/include/blk.h
+++ b/include/blk.h
@@ -371,6 +371,18 @@ int blk_create_devicef(struct udevice *parent, const char *drv_name,
 		       lbaint_t lba, struct udevice **devp);
 
 /**
+ * blk_probe_or_unbind() - Try to probe
+ *
+ * Try to probe the device, primarily for enumerating partitions.
+ * If it fails, the device itself is unbound since it means that it won't
+ * work any more.
+ *
+ * @dev:	The device to probe
+ * Return:	0 if OK, -ve on error
+ */
+int blk_probe_or_unbind(struct udevice *dev);
+
+/**
  * blk_unbind_all() - Unbind all device of the given interface type
  *
  * The devices are removed and then unbound.