[PATCH v1 1/2] cmd: bind: Fix driver binding on a device
Patrice Chotard
patrice.chotard at foss.st.com
Fri Apr 9 09:36:16 CEST 2021
Fix a regression brings by commit 84f8e36f03fa ("cmd: bind: allow to
bind driver with driver data")
As example, the following bind command doesn't work:
bind /soc/usb-otg at 49000000 usb_ether
As usb_ether driver has no compatible string, it can't be find by
lists_bind_fdt(). In bind_by_node_path(), which called lists_bind_fdt(),
the driver entry is known, pass it to lists_bind_fdt() to force the driver
entry selection.
For this, add a new parameter struct *driver to lists_bind_fdt().
Fix also all lists_bind_fdt() callers.
Fixes: 84f8e36f03fa ("cmd: bind: allow to bind driver with driver data")
Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
Reported-by: Herbert Poetzl <herbert at 13thfloor.at>
Cc: Marek Vasut <marex at denx.de>
Cc: Herbert Poetzl <herbert at 13thfloor.at>
---
cmd/bind.c | 2 +-
drivers/core/device.c | 2 +-
drivers/core/lists.c | 11 ++++++++---
drivers/core/root.c | 2 +-
drivers/misc/imx8/scu.c | 2 +-
drivers/serial/serial-uclass.c | 2 +-
drivers/timer/timer-uclass.c | 2 +-
include/dm/lists.h | 3 ++-
test/dm/nop.c | 2 +-
test/dm/test-fdt.c | 2 +-
10 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/cmd/bind.c b/cmd/bind.c
index af2f22cc4c..d8f610943c 100644
--- a/cmd/bind.c
+++ b/cmd/bind.c
@@ -152,7 +152,7 @@ static int bind_by_node_path(const char *path, const char *drv_name)
}
ofnode = ofnode_path(path);
- ret = lists_bind_fdt(parent, ofnode, &dev, false);
+ ret = lists_bind_fdt(parent, ofnode, &dev, drv, false);
if (!dev || ret) {
printf("Unable to bind. err:%d\n", ret);
diff --git a/drivers/core/device.c b/drivers/core/device.c
index 81f6880eac..3abd89aca6 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -1133,6 +1133,6 @@ int dev_enable_by_path(const char *path)
if (ret)
return ret;
- return lists_bind_fdt(parent, node, NULL, false);
+ return lists_bind_fdt(parent, node, NULL, NULL, false);
}
#endif
diff --git a/drivers/core/lists.c b/drivers/core/lists.c
index e214306b90..2eb808ce2d 100644
--- a/drivers/core/lists.c
+++ b/drivers/core/lists.c
@@ -182,7 +182,7 @@ static int driver_check_compatible(const struct udevice_id *of_match,
}
int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp,
- bool pre_reloc_only)
+ struct driver *drv, bool pre_reloc_only)
{
struct driver *driver = ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver);
@@ -225,8 +225,13 @@ int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp,
for (entry = driver; entry != driver + n_ents; entry++) {
ret = driver_check_compatible(entry->of_match, &id,
compat);
- if (!ret)
- break;
+ if (drv) {
+ if (drv == entry)
+ break;
+ } else {
+ if (!ret)
+ break;
+ }
}
if (entry == driver + n_ents)
continue;
diff --git a/drivers/core/root.c b/drivers/core/root.c
index 9bc682cffe..3c6fa3838d 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -236,7 +236,7 @@ static int dm_scan_fdt_node(struct udevice *parent, ofnode parent_node,
pr_debug(" - ignoring disabled device\n");
continue;
}
- err = lists_bind_fdt(parent, node, NULL, pre_reloc_only);
+ err = lists_bind_fdt(parent, node, NULL, NULL, pre_reloc_only);
if (err && !ret) {
ret = err;
debug("%s: ret=%d\n", node_name, ret);
diff --git a/drivers/misc/imx8/scu.c b/drivers/misc/imx8/scu.c
index 035a600f71..4ab5cb4bf1 100644
--- a/drivers/misc/imx8/scu.c
+++ b/drivers/misc/imx8/scu.c
@@ -219,7 +219,7 @@ static int imx8_scu_bind(struct udevice *dev)
debug("%s(dev=%p)\n", __func__, dev);
ofnode_for_each_subnode(node, dev_ofnode(dev)) {
- ret = lists_bind_fdt(dev, node, &child, true);
+ ret = lists_bind_fdt(dev, node, &child, NULL, true);
if (ret)
return ret;
debug("bind child dev %s\n", child->name);
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
index 8a87eed683..6d1c671efc 100644
--- a/drivers/serial/serial-uclass.c
+++ b/drivers/serial/serial-uclass.c
@@ -67,7 +67,7 @@ static int serial_check_stdout(const void *blob, struct udevice **devp)
* anyway.
*/
if (node > 0 && !lists_bind_fdt(gd->dm_root, offset_to_ofnode(node),
- devp, false)) {
+ devp, NULL, false)) {
if (!device_probe(*devp))
return 0;
}
diff --git a/drivers/timer/timer-uclass.c b/drivers/timer/timer-uclass.c
index 6f00a5d0db..b1ac604b5b 100644
--- a/drivers/timer/timer-uclass.c
+++ b/drivers/timer/timer-uclass.c
@@ -148,7 +148,7 @@ int notrace dm_timer_init(void)
* If the timer is not marked to be bound before
* relocation, bind it anyway.
*/
- if (!lists_bind_fdt(dm_root(), node, &dev, false)) {
+ if (!lists_bind_fdt(dm_root(), node, &dev, NULL, false)) {
ret = device_probe(dev);
if (ret)
return ret;
diff --git a/include/dm/lists.h b/include/dm/lists.h
index 1a86552546..5896ae3658 100644
--- a/include/dm/lists.h
+++ b/include/dm/lists.h
@@ -53,13 +53,14 @@ int lists_bind_drivers(struct udevice *parent, bool pre_reloc_only);
* @parent: parent device (root)
* @node: device tree node to bind
* @devp: if non-NULL, returns a pointer to the bound device
+ * @drv: if non-NULL, force this driver to be bound
* @pre_reloc_only: If true, bind only nodes with special devicetree properties,
* or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers.
* @return 0 if device was bound, -EINVAL if the device tree is invalid,
* other -ve value on error
*/
int lists_bind_fdt(struct udevice *parent, ofnode node, struct udevice **devp,
- bool pre_reloc_only);
+ struct driver *drv, bool pre_reloc_only);
/**
* device_bind_driver() - bind a device to a driver
diff --git a/test/dm/nop.c b/test/dm/nop.c
index 2cd92c5240..75b9e7b6cc 100644
--- a/test/dm/nop.c
+++ b/test/dm/nop.c
@@ -25,7 +25,7 @@ static int noptest_bind(struct udevice *parent)
const char *bind_flag = ofnode_read_string(ofnode, "bind");
if (bind_flag && (strcmp(bind_flag, "True") == 0))
- lists_bind_fdt(parent, ofnode, &dev, false);
+ lists_bind_fdt(parent, ofnode, &dev, NULL, false);
ofnode = dev_read_next_subnode(ofnode);
}
diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c
index 6e83aeecd9..c6968b0d5f 100644
--- a/test/dm/test-fdt.c
+++ b/test/dm/test-fdt.c
@@ -592,7 +592,7 @@ static int zero_size_cells_bus_child_bind(struct udevice *dev)
int err;
ofnode_for_each_subnode(child, dev_ofnode(dev)) {
- err = lists_bind_fdt(dev, child, NULL, false);
+ err = lists_bind_fdt(dev, child, NULL, NULL, false);
if (err) {
dev_err(dev, "%s: lists_bind_fdt, err=%d\n",
__func__, err);
--
2.17.1
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