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Subject[PATCH] powerpc: Use common error handling code in setup_new_fdt()
Date
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sun, 11 Mar 2018 09:03:42 +0100

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
arch/powerpc/kernel/machine_kexec_file_64.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/arch/powerpc/kernel/machine_kexec_file_64.c b/arch/powerpc/kernel/machine_kexec_file_64.c
index e4395f937d63..90c6004c2eec 100644
--- a/arch/powerpc/kernel/machine_kexec_file_64.c
+++ b/arch/powerpc/kernel/machine_kexec_file_64.c
@@ -302,18 +302,14 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
ret = fdt_setprop_u64(fdt, chosen_node,
"linux,initrd-start",
initrd_load_addr);
- if (ret < 0) {
- pr_err("Error setting up the new device tree.\n");
- return -EINVAL;
- }
+ if (ret < 0)
+ goto report_setup_failure;

/* initrd-end is the first address after the initrd image. */
ret = fdt_setprop_u64(fdt, chosen_node, "linux,initrd-end",
initrd_load_addr + initrd_len);
- if (ret < 0) {
- pr_err("Error setting up the new device tree.\n");
- return -EINVAL;
- }
+ if (ret < 0)
+ goto report_setup_failure;

ret = fdt_add_mem_rsv(fdt, initrd_load_addr, initrd_len);
if (ret) {
@@ -325,10 +321,8 @@ int setup_new_fdt(const struct kimage *image, void *fdt,

if (cmdline != NULL) {
ret = fdt_setprop_string(fdt, chosen_node, "bootargs", cmdline);
- if (ret < 0) {
- pr_err("Error setting up the new device tree.\n");
- return -EINVAL;
- }
+ if (ret < 0)
+ goto report_setup_failure;
} else {
ret = fdt_delprop(fdt, chosen_node, "bootargs");
if (ret && ret != -FDT_ERR_NOTFOUND) {
@@ -344,10 +338,12 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
}

ret = fdt_setprop(fdt, chosen_node, "linux,booted-from-kexec", NULL, 0);
- if (ret) {
- pr_err("Error setting up the new device tree.\n");
- return -EINVAL;
- }
+ if (ret)
+ goto report_setup_failure;

return 0;
+
+report_setup_failure:
+ pr_err("Error setting up the new device tree.\n");
+ return -EINVAL;
}
--
2.16.2
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