Message ID | 20230104110032.1220721-3-peng.fan@oss.nxp.com |
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State | New |
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clk: imx: imx_register_uart_clocks update
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Commit Message
Peng Fan (OSS)
Jan. 4, 2023, 11 a.m. UTC
From: Peng Fan <peng.fan@nxp.com> Currently the clk_count is specified by API users, but this parameter is wrongly used, for example, i.MX8M clk driver use 4, however the uart device tree node only use 2 clock entries. So let using of_clk_get_parent_count to get the exact clock count. Signed-off-by: Peng Fan <peng.fan@nxp.com> --- drivers/clk/imx/clk.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/imx/clk.c b/drivers/clk/imx/clk.c index 5b73a477f11f..df810f0ee16d 100644 --- a/drivers/clk/imx/clk.c +++ b/drivers/clk/imx/clk.c @@ -167,6 +167,8 @@ __setup_param("earlyprintk", imx_keep_uart_earlyprintk, void imx_register_uart_clocks(unsigned int clk_count) { + unsigned int num __maybe_unused; + imx_enabled_uart_clocks = 0; /* i.MX boards use device trees now. For build tests without CONFIG_OF, do nothing */ @@ -174,14 +176,18 @@ void imx_register_uart_clocks(unsigned int clk_count) if (imx_keep_uart_clocks) { int i; - imx_uart_clocks = kcalloc(clk_count, sizeof(struct clk *), GFP_KERNEL); - if (!imx_uart_clocks) + num = of_clk_get_parent_count(of_stdout); + if (!num) return; if (!of_stdout) return; - for (i = 0; i < clk_count; i++) { + imx_uart_clocks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL); + if (!imx_uart_clocks) + return; + + for (i = 0; i < num; i++) { imx_uart_clocks[imx_enabled_uart_clocks] = of_clk_get(of_stdout, i); /* Stop if there are no more of_stdout references */