[13/15] ARM: zynq: fix a leaked reference by addingmissing of_node_put
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Message ID 1551430616-42014-13-git-send-email-wen.yang99@zte.com.cn
State New
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Series
  • [01/15] ARM: actions: fix a leaked reference by addingmissing of_node_put
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Commit Message

Wen Yang March 1, 2019, 8:56 a.m. UTC
The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.

Detected by coccinelle with the following warnings:
./arch/arm/mach-zynq/common.c:89:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 80, but without a corresponding object release within this function.
./arch/arm/mach-zynq/common.c:98:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 80, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 arch/arm/mach-zynq/common.c | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/arch/arm/mach-zynq/common.c b/arch/arm/mach-zynq/common.c
index 6aba9eb..a8b1b9c 100644
--- a/arch/arm/mach-zynq/common.c
+++ b/arch/arm/mach-zynq/common.c
@@ -84,6 +84,7 @@  static int __init zynq_get_revision(void)
 	}
 
 	zynq_devcfg_base = of_iomap(np, 0);
+	of_node_put(np);
 	if (!zynq_devcfg_base) {
 		pr_err("%s: Unable to map I/O memory\n", __func__);
 		return -1;