[PATCH 2/4] cmd: clk: replace clk_lookup by uclass_get_device_by_name
Patrick Delaunay
patrick.delaunay at foss.st.com
Mon Jan 31 17:21:38 CET 2022
The function clk_lookup can be replaced by a direct call
to uclass_get_device_by_name for UCLASS_CLK.
This patch removes duplicated codes by the generic DM API and avoids
issue in clk_lookup because result of uclass_get_device wasn't tested;
when ret < 0, dev = NULL and dev->name is invalid, the next function
call strcmp(name, dev->name) causes a crash.
Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---
cmd/clk.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)
diff --git a/cmd/clk.c b/cmd/clk.c
index 52237791cf..d615f14a84 100644
--- a/cmd/clk.c
+++ b/cmd/clk.c
@@ -99,20 +99,6 @@ static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc,
}
#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK)
-struct udevice *clk_lookup(const char *name)
-{
- int i = 0;
- struct udevice *dev;
-
- do {
- uclass_get_device(UCLASS_CLK, i++, &dev);
- if (!strcmp(name, dev->name))
- return dev;
- } while (dev);
-
- return NULL;
-}
-
static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
@@ -125,9 +111,7 @@ static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc,
freq = dectoul(argv[2], NULL);
- dev = clk_lookup(argv[1]);
-
- if (dev)
+ if (!uclass_get_device_by_name(UCLASS_CLK, argv[1], &dev))
clk = dev_get_clk_ptr(dev);
if (!clk) {
--
2.25.1
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