Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
clk: imx: get stdout clk count from device tree
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>
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20230104110032.1220721-3-peng.fan@oss.nxp.com
+9
-3
+9
-3
drivers/clk/imx/clk.c
+9
-3
drivers/clk/imx/clk.c
···
167
167
168
168
void imx_register_uart_clocks(unsigned int clk_count)
169
169
{
170
+
unsigned int num __maybe_unused;
171
+
170
172
imx_enabled_uart_clocks = 0;
171
173
172
174
/* i.MX boards use device trees now. For build tests without CONFIG_OF, do nothing */
···
176
174
if (imx_keep_uart_clocks) {
177
175
int i;
178
176
179
-
imx_uart_clocks = kcalloc(clk_count, sizeof(struct clk *), GFP_KERNEL);
180
-
if (!imx_uart_clocks)
177
+
num = of_clk_get_parent_count(of_stdout);
178
+
if (!num)
181
179
return;
182
180
183
181
if (!of_stdout)
184
182
return;
185
183
186
-
for (i = 0; i < clk_count; i++) {
184
+
imx_uart_clocks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL);
185
+
if (!imx_uart_clocks)
186
+
return;
187
+
188
+
for (i = 0; i < num; i++) {
187
189
imx_uart_clocks[imx_enabled_uart_clocks] = of_clk_get(of_stdout, i);
188
190
189
191
/* Stop if there are no more of_stdout references */