4.18-stable review patch. If anyone has any objections, please let me know.
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From: Guenter Roeck linux@roeck-us.net
[ Upstream commit e866d3e84eb7c9588afb77604d417e8cc49fe216 ]
setup_initrd() overwrites initrd_start and initrd_end if __initramfs_size is larger than 0, which is always true even if there is no embedded initramfs. This prevents booting qemu with "-initrd" parameter. Overwriting initrd_start and initrd_end is not necessary since __initramfs_start and __initramfs_size are used directly in populate_rootfs() to load the built-in initramfs, so just drop that code.
Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Palmer Dabbelt palmer@sifive.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/riscv/kernel/setup.c | 7 ------- 1 file changed, 7 deletions(-)
--- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -64,15 +64,8 @@ atomic_t hart_lottery; #ifdef CONFIG_BLK_DEV_INITRD static void __init setup_initrd(void) { - extern char __initramfs_start[]; - extern unsigned long __initramfs_size; unsigned long size;
- if (__initramfs_size > 0) { - initrd_start = (unsigned long)(&__initramfs_start); - initrd_end = initrd_start + __initramfs_size; - } - if (initrd_start >= initrd_end) { printk(KERN_INFO "initrd not found or empty"); goto disable;