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Commit 98f28a19 authored by Venkata Rao Kakani's avatar Venkata Rao Kakani
Browse files

hibernation: msm: arm64: avoid swap image header corruption 



Avoid swap image header corruption based on golden_image boot
argument.

Change-Id: If15408b79cf4ff1d04af9a0abb9bfac603a3e569
Signed-off-by: default avatarVenkata Rao Kakani <vkakani@codeaurora.org>
parent 84da71b2

kernel/power/swap.c

+15 −1
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ 


#define HIBERNATE_SIG	"S1SUSPEND"



static int goldenimage;

/*

 * When reading an {un,}compressed image, we may restore pages in place,

 * in which case some architectures need these pages cleaning before they
@@ -1531,7 +1532,13 @@ int swsusp_check(void) 
			goto put;



		if (!memcmp(HIBERNATE_SIG, swsusp_header->sig, 10)) {

			memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10);

			if (!goldenimage) {

				pr_debug("PM: corrupt hibernate image header\n");

				memcpy(swsusp_header->sig,

					swsusp_header->orig_sig, 10);

			} else {

				pr_debug("PM: Header corruption avoided\n");

			}

			/* Reset swap signature now */

			error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,

						swsusp_header, NULL);
@@ -1605,3 +1612,10 @@ static int swsusp_header_init(void) 
}



core_initcall(swsusp_header_init);



static int __init golden_image_setup(char *str)

{

	goldenimage = 1;

	return 1;

}

__setup("golden_image", golden_image_setup);