[PATCH 1/2] clk: qcom: common: fix legacy board-clock registration

[PATCH 1/2] clk: qcom: common: fix legacy board-clock registration

[Johan Hovold]

Make sure to search only the child nodes of "/clocks", rather than the
whole device-tree depth-first starting at "/clocks" when determining
whether to register a fixed clock in the legacy board-clock registration
helper.

Fixes: ee15faffef11 ("clk: qcom: common: Add API to register board clocks backwards compatibly")
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/clk/qcom/common.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c
index b35564c0493f..b8064a336d46 100644
--- a/drivers/clk/qcom/common.c
+++ b/drivers/clk/qcom/common.c
@@ -133,8 +133,10 @@ static int _qcom_cc_register_board_clk(struct device *dev, const char *path,
 	int ret;
 
 	clocks_node = of_find_node_by_path("/clocks");
-	if (clocks_node)
-		node = of_find_node_by_name(clocks_node, path);
+	if (clocks_node) {
+		node = of_get_child_by_name(clocks_node, path);
+		of_node_put(clocks_node);
+	}
 
 	if (!node) {
 		fixed = devm_kzalloc(dev, sizeof(*fixed), GFP_KERNEL);
-- 
2.15.0

[PATCH 2/2] clk: ti: dra7-atl-clock: fix child-node lookups

[Johan Hovold]

Fix child node-lookup during probe, which ended up searching the whole
device tree depth-first starting at parent rather than just matching on
its children.

Note that the original premature free of the parent node has already
been fixed separately, but that fix was apparently never backported to
stable.

Fixes: 9ac33b0ce81f ("CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
Fixes: 660e15519399 ("clk: ti: dra7-atl-clock: Fix of_node reference counting")
Cc: stable <stable@vger.kernel.org>     # 3.16: 660e15519399
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/clk/ti/clk-dra7-atl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
index 13eb04f72389..148815470431 100644
--- a/drivers/clk/ti/clk-dra7-atl.c
+++ b/drivers/clk/ti/clk-dra7-atl.c
@@ -274,8 +274,7 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
 
 		/* Get configuration for the ATL instances */
 		snprintf(prop, sizeof(prop), "atl%u", i);
-		of_node_get(node);
-		cfg_node = of_find_node_by_name(node, prop);
+		cfg_node = of_get_child_by_name(node, prop);
 		if (cfg_node) {
 			ret = of_property_read_u32(cfg_node, "bws",
 						   &cdesc->bws);
-- 
2.15.0

Re: [PATCH 2/2] clk: ti: dra7-atl-clock: fix child-node lookups

[Peter Ujfalusi]

On 11/11/2017 06:29 PM, Johan Hovold wrote:
> Fix child node-lookup during probe, which ended up searching the whole
> device tree depth-first starting at parent rather than just matching on
> its children.
> 
> Note that the original premature free of the parent node has already
> been fixed separately, but that fix was apparently never backported to
> stable.

Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>

> 
> Fixes: 9ac33b0ce81f ("CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
> Fixes: 660e15519399 ("clk: ti: dra7-atl-clock: Fix of_node reference counting")
> Cc: stable <stable@vger.kernel.org>     # 3.16: 660e15519399
> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---
>  drivers/clk/ti/clk-dra7-atl.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/ti/clk-dra7-atl.c b/drivers/clk/ti/clk-dra7-atl.c
> index 13eb04f72389..148815470431 100644
> --- a/drivers/clk/ti/clk-dra7-atl.c
> +++ b/drivers/clk/ti/clk-dra7-atl.c
> @@ -274,8 +274,7 @@ static int of_dra7_atl_clk_probe(struct platform_device *pdev)
>  
>  		/* Get configuration for the ATL instances */
>  		snprintf(prop, sizeof(prop), "atl%u", i);
> -		of_node_get(node);
> -		cfg_node = of_find_node_by_name(node, prop);
> +		cfg_node = of_get_child_by_name(node, prop);
>  		if (cfg_node) {
>  			ret = of_property_read_u32(cfg_node, "bws",
>  						   &cdesc->bws);
> 


-- 
Péter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

Re: [PATCH 2/2] clk: ti: dra7-atl-clock: fix child-node lookups

[Stephen Boyd]

On 11/11, Johan Hovold wrote:
> Fix child node-lookup during probe, which ended up searching the whole
> device tree depth-first starting at parent rather than just matching on
> its children.
> 
> Note that the original premature free of the parent node has already
> been fixed separately, but that fix was apparently never backported to
> stable.
> 
> Fixes: 9ac33b0ce81f ("CLK: TI: Driver for DRA7 ATL (Audio Tracking Logic)")
> Fixes: 660e15519399 ("clk: ti: dra7-atl-clock: Fix of_node reference counting")
> Cc: stable <stable@vger.kernel.org>     # 3.16: 660e15519399
> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---

Applied to clk-next

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH 1/2] clk: qcom: common: fix legacy board-clock registration

[Stephen Boyd]

On 11/11, Johan Hovold wrote:
> Make sure to search only the child nodes of "/clocks", rather than the
> whole device-tree depth-first starting at "/clocks" when determining
> whether to register a fixed clock in the legacy board-clock registration
> helper.
> 
> Fixes: ee15faffef11 ("clk: qcom: common: Add API to register board clocks backwards compatibly")
> Signed-off-by: Johan Hovold <johan@kernel.org>
> ---

Applied to clk-next

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project