[PATCH v2 2/3] dm: compare full name in uclass_get_by_name

[Patrick Delaunay]

Change uclass_get_by_name to use a strict string compare function
"strcmp" with the parameter 'name'.

This patch avoids issues when strlen(name)<strlen(uc_drv->name) as
the function uclass_get_by_name() no more use uclass_get_by_name_len(),
which limit the check with "strncmp" and length of name.

This problem is detected by the sandbox test for log filter:
in log_get_cat_by_name(), uclass_get_by_name("spi") = UCLASS_SPI_EMUL
for "spi_emul", it is not the expected result = UCLASS_SPI
for a search by name.
But it is the expected result for search with partial name
uclass_get_by_name_len("spi", 3).

Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

(no changes since v1)

 drivers/core/uclass.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 336ea8d243..32b6cef167 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -196,7 +196,16 @@ enum uclass_id uclass_get_by_name_len(const char *name, int len)
 
 enum uclass_id uclass_get_by_name(const char *name)
 {
-	return uclass_get_by_name_len(name, strlen(name));
+	int i;
+
+	for (i = 0; i < UCLASS_COUNT; i++) {
+		struct uclass_driver *uc_drv = lists_uclass_lookup(i);
+
+		if (uc_drv && !strcmp(uc_drv->name, name))
+			return i;
+	}
+
+	return UCLASS_INVALID;
 }
 
 int dev_get_uclass_index(struct udevice *dev, struct uclass **ucp)
-- 
2.25.1