On 1/24/22 8:17 AM, Patrick Delaunay wrote:
It is safe to check if the uclass id on the device is UCLASS_CLK before to call the clk_ functions, but today this comparison is not done on the device used in API: clkp->dev->parent but on the device himself: clkp->dev.This patch corrects this behavior and tests if the parent device is a clock device before to call the clock API, clk_enable or clk_disable, on this device. Fixes: 0520be0f67e3 ("clk: prograte clk enable/disable to parent") Signed-off-by: Patrick Delaunay <patrick.delau...@foss.st.com> --- drivers/clk/clk-uclass.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c index d245b672fa..8b6981a307 100644 --- a/drivers/clk/clk-uclass.c +++ b/drivers/clk/clk-uclass.c @@ -652,7 +652,7 @@ int clk_enable(struct clk *clk) return 0; } if (clkp->dev->parent && - device_get_uclass_id(clkp->dev) == UCLASS_CLK) { + device_get_uclass_id(clkp->dev->parent) == UCLASS_CLK) { ret = clk_enable(dev_get_clk_ptr(clkp->dev->parent)); if (ret) { printf("Enable %s failed\n", @@ -726,7 +726,7 @@ int clk_disable(struct clk *clk) }if (clkp && clkp->dev->parent &&- device_get_uclass_id(clkp->dev) == UCLASS_CLK) { + device_get_uclass_id(clkp->dev->parent) == UCLASS_CLK) { ret = clk_disable(dev_get_clk_ptr(clkp->dev->parent)); if (ret) { printf("Disable %s failed\n",
Looks like I put this in [1] in v6, so Reviewed-by: Sean Anderson <sean...@gmail.com> [1] https://lore.kernel.org/u-boot/20200521161503.384823-4-sean...@gmail.com/
