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cmd: clk: probe the clock before dump them
The clock UCLASS need to be probed to allow availability of the
private data (struct clk *), get in show_clks() with dev_get_clk_ptr()
before use them.
Without this patch the clock dump can cause crash because all the
private data are not available before calling the API clk_get_rate().
It is the case for the SCMI clocks, priv->channel is needed for
scmi_clk_get_rate() and it is initialized only in scmi_clk_probe().
This issue causes a crash for "clk dump" command on STM32MP135F-DK board
for SCMI clock not yet probed.
Fixes: 1a725e2290
("clk: fix clock tree dump to properly dump out every registered clock")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20221213145708.v2.1.Ia0bc6b272f1e2e3f37873c61d79138c2663c4055@changeid
This commit is contained in:
parent
4a18d23039
commit
c40251c120
1 changed files with 5 additions and 10 deletions
15
cmd/clk.c
15
cmd/clk.c
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@ -22,7 +22,7 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
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u32 rate;
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clkp = dev_get_clk_ptr(dev);
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if (device_get_uclass_id(dev) == UCLASS_CLK && clkp) {
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if (clkp) {
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parent = clk_get_parent(clkp);
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if (!IS_ERR(parent) && depth == -1)
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return;
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@ -49,10 +49,11 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
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printf("%s\n", dev->name);
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}
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list_for_each_entry(child, &dev->child_head, sibling_node) {
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device_foreach_child_probe(child, dev) {
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if (device_get_uclass_id(child) != UCLASS_CLK)
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continue;
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if (child == dev)
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continue;
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is_last = list_is_last(&child->sibling_node, &dev->child_head);
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show_clks(child, depth, (last_flag << 1) | is_last);
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}
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@ -61,17 +62,11 @@ static void show_clks(struct udevice *dev, int depth, int last_flag)
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int __weak soc_clk_dump(void)
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{
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struct udevice *dev;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_CLK, &uc);
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if (ret)
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return ret;
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printf(" Rate Usecnt Name\n");
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printf("------------------------------------------\n");
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uclass_foreach_dev(dev, uc)
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uclass_foreach_dev_probe(UCLASS_CLK, dev)
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show_clks(dev, -1, 0);
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return 0;
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