diff options
| author | Bin Meng <bin.meng@windriver.com> | 2022-04-21 13:56:29 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-04-29 10:47:45 +1000 |
| commit | 58303fc0be8ccd7557414a920d4c666fce36eb41 (patch) | |
| tree | 900873ca93397a3faf1c3f538c050692bc532276 | |
| parent | 6d3b9c024ce4e115f4dc24706d4c45bdc04ba093 (diff) | |
hw/riscv: Don't add empty bootargs to device tree
Commit 7c28f4da20e5 ("RISC-V: Don't add NULL bootargs to device-tree")
tried to avoid adding *NULL* bootargs to device tree, but unfortunately
the changes were entirely useless, due to MachineState::kernel_cmdline
can't be NULL at all as the default value is given as an empty string.
(see hw/core/machine.c::machine_initfn()).
Note the wording of *NULL* bootargs is wrong. It can't be NULL otherwise
a segfault had already been observed by dereferencing the NULL pointer.
It should be worded as *empty" bootargs.
Fixes: 7c28f4da20e5 ("RISC-V: Don't add NULL bootargs to device-tree")
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220421055629.1177285-2-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
| -rw-r--r-- | hw/riscv/microchip_pfsoc.c | 2 | ||||
| -rw-r--r-- | hw/riscv/sifive_u.c | 2 | ||||
| -rw-r--r-- | hw/riscv/spike.c | 2 | ||||
| -rw-r--r-- | hw/riscv/virt.c | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c index cafd1fc9ae..10a5d0e501 100644 --- a/hw/riscv/microchip_pfsoc.c +++ b/hw/riscv/microchip_pfsoc.c @@ -571,7 +571,7 @@ static void microchip_icicle_kit_machine_init(MachineState *machine) "linux,initrd-end", end); } - if (machine->kernel_cmdline) { + if (machine->kernel_cmdline && *machine->kernel_cmdline) { qemu_fdt_setprop_string(machine->fdt, "/chosen", "bootargs", machine->kernel_cmdline); } diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index 7fbc7dea42..cc8c7637cb 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -511,7 +511,7 @@ static void create_fdt(SiFiveUState *s, const MemMapEntry *memmap, g_free(nodename); update_bootargs: - if (cmdline) { + if (cmdline && *cmdline) { qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } } diff --git a/hw/riscv/spike.c b/hw/riscv/spike.c index 1562b000bb..068ba3493e 100644 --- a/hw/riscv/spike.c +++ b/hw/riscv/spike.c @@ -177,7 +177,7 @@ static void create_fdt(SpikeState *s, const MemMapEntry *memmap, qemu_fdt_add_subnode(fdt, "/chosen"); qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", "/htif"); - if (cmdline) { + if (cmdline && *cmdline) { qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); } } diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index b49c5361bd..643fee23f7 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -1004,7 +1004,7 @@ static void create_fdt(RISCVVirtState *s, const MemMapEntry *memmap, create_fdt_flash(s, memmap); update_bootargs: - if (cmdline) { + if (cmdline && *cmdline) { qemu_fdt_setprop_string(mc->fdt, "/chosen", "bootargs", cmdline); } } |