Patch "clk: keystone: pll: fix a couple NULL vs IS_ERR() checks" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    clk: keystone: pll: fix a couple NULL vs IS_ERR() checks

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     clk-keystone-pll-fix-a-couple-null-vs-is_err-checks.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 5cf3428205b12862d4919d13000062d26026a298
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date:   Thu Oct 5 17:01:57 2023 +0300

    clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
    
    [ Upstream commit a5d14f8b551eb1551c10053653ee8e27f19672fa ]
    
    The clk_register_divider() and clk_register_mux() functions returns
    error pointers on error but this code checks for NULL.  Fix that.
    
    Fixes: b9e0d40c0d83 ("clk: keystone: add Keystone PLL clock driver")
    Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/d9da4c97-0da9-499f-9a21-1f8e3f148dc1@moroto.mountain
    Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/clk/keystone/pll.c b/drivers/clk/keystone/pll.c
index ee5c72369334f..6bbdd4705d71f 100644
--- a/drivers/clk/keystone/pll.c
+++ b/drivers/clk/keystone/pll.c
@@ -281,12 +281,13 @@ static void __init of_pll_div_clk_init(struct device_node *node)
 
 	clk = clk_register_divider(NULL, clk_name, parent_name, 0, reg, shift,
 				 mask, 0, NULL);
-	if (clk) {
-		of_clk_add_provider(node, of_clk_src_simple_get, clk);
-	} else {
+	if (IS_ERR(clk)) {
 		pr_err("%s: error registering divider %s\n", __func__, clk_name);
 		iounmap(reg);
+		return;
 	}
+
+	of_clk_add_provider(node, of_clk_src_simple_get, clk);
 }
 CLK_OF_DECLARE(pll_divider_clock, "ti,keystone,pll-divider-clock", of_pll_div_clk_init);
 
@@ -328,10 +329,12 @@ static void __init of_pll_mux_clk_init(struct device_node *node)
 	clk = clk_register_mux(NULL, clk_name, (const char **)&parents,
 				ARRAY_SIZE(parents) , 0, reg, shift, mask,
 				0, NULL);
-	if (clk)
-		of_clk_add_provider(node, of_clk_src_simple_get, clk);
-	else
+	if (IS_ERR(clk)) {
 		pr_err("%s: error registering mux %s\n", __func__, clk_name);
+		return;
+	}
+
+	of_clk_add_provider(node, of_clk_src_simple_get, clk);
 }
 CLK_OF_DECLARE(pll_mux_clock, "ti,keystone,pll-mux-clock", of_pll_mux_clk_init);