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ARM: imx: add missing of_node_put() 

Calling of_find_compatible_node() returns a node pointer with refcount
incremented. Use of_node_put() on it when done.
The patch fixes the same problem on different i.MX platforms.

Fixes: 8b88f7ef31 ("ARM: mx25: Retrieve IIM base from dt")
Fixes: 94b2bec1b0 ("ARM: imx27: Retrieve the SYSCTRL base address from devicetree")
Fixes: 3172225d45 ("ARM: imx31: Retrieve the IIM base address from devicetree")
Fixes: f68ea682d1 ("ARM: imx35: Retrieve the IIM base address from devicetree")
Fixes: ee18a7154e ("ARM: imx5: retrieve iim base from device tree")
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Dario Binacchi 2022-12-08 17:54:03 +01:00 committed by Shawn Guo
parent 62f0147fd4
commit 87b30c4b0e
5 changed files with 5 additions and 0 deletions
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1
arch/arm/mach-imx/cpu-imx25.c
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@ -23,6 +23,7 @@ static int mx25_read_cpu_rev(void)
np = of_find_compatible_node(NULL, NULL, "fsl,imx25-iim");
iim_base = of_iomap(np, 0);
of_node_put(np);
BUG_ON(!iim_base);
rev = readl(iim_base + MXC_IIMSREV);
iounmap(iim_base);

1
arch/arm/mach-imx/cpu-imx27.c
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@ -28,6 +28,7 @@ static int mx27_read_cpu_rev(void)
np = of_find_compatible_node(NULL, NULL, "fsl,imx27-ccm");
ccm_base = of_iomap(np, 0);
of_node_put(np);
BUG_ON(!ccm_base);
/*
* now we have access to the IO registers. As we need

1
arch/arm/mach-imx/cpu-imx31.c
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@ -39,6 +39,7 @@ static int mx31_read_cpu_rev(void)
np = of_find_compatible_node(NULL, NULL, "fsl,imx31-iim");
iim_base = of_iomap(np, 0);
of_node_put(np);
BUG_ON(!iim_base);
/* read SREV register from IIM module */

1
arch/arm/mach-imx/cpu-imx35.c
View File

@ -21,6 +21,7 @@ static int mx35_read_cpu_rev(void)
np = of_find_compatible_node(NULL, NULL, "fsl,imx35-iim");
iim_base = of_iomap(np, 0);
of_node_put(np);
BUG_ON(!iim_base);
rev = imx_readl(iim_base + MXC_IIMSREV);

1
arch/arm/mach-imx/cpu-imx5.c
View File

@ -28,6 +28,7 @@ static u32 imx5_read_srev_reg(const char *compat)
np = of_find_compatible_node(NULL, NULL, compat);
iim_base = of_iomap(np, 0);
of_node_put(np);
WARN_ON(!iim_base);
srev = readl(iim_base + IIM_SREV) & 0xff;