MIPS: Do not request resources for crashkernel if one isn't defined

When KEXEC is enabled but crashkernel details are not passed through the kernel commandline unnecessary resources are requested (start==end==0) Signed-off-by: Marcin Nowakowski <[email protected]> Cc: [email protected] Patchwork: https://patchwork.linux-mips.org/patch/14607/ Signed-off-by: Ralf Baechle <[email protected]>
cail · Jan 3, 2017 · 269aa43 · 269aa43
1 parent 39a3cb2
commit 269aa43
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
@@ -672,6 +672,9 @@ static void __init request_crashkernel(struct resource *res)
 {
 	int ret;
 
+	if (crashk_res.start == crashk_res.end)
+		return;
+
 	ret = request_resource(res, &crashk_res);
 	if (!ret)
 		pr_info("Reserving %ldMB of memory at %ldMB for crashkernel\n",