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s390/boot: access kernel command line via parmarea 

Access the kernel command line via parmarea instead of using the
COMMAND_LINE define.
With this the following gcc11 warning is removed:

arch/s390/boot/ipl_parm.c: In function ‘setup_boot_command_line’:
arch/s390/boot/ipl_parm.c:168:50: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-05-07 19:12:54 +02:00 committed by Vasily Gorbik
parent f73c632d38
commit 27c1dac0b6
1 changed files with 4 additions and 4 deletions
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8
arch/s390/boot/ipl_parm.c
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@ -165,12 +165,12 @@ static inline int has_ebcdic_char(const char *str)
void setup_boot_command_line(void)
{
COMMAND_LINE[ARCH_COMMAND_LINE_SIZE - 1] = 0;
parmarea.command_line[ARCH_COMMAND_LINE_SIZE - 1] = 0;
/* convert arch command line to ascii if necessary */
if (has_ebcdic_char(COMMAND_LINE))
EBCASC(COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
if (has_ebcdic_char(parmarea.command_line))
EBCASC(parmarea.command_line, ARCH_COMMAND_LINE_SIZE);
/* copy arch command line */
strcpy(early_command_line, strim(COMMAND_LINE));
strcpy(early_command_line, strim(parmarea.command_line));
/* append IPL PARM data to the boot command line */
if (!is_prot_virt_guest() && ipl_block_valid)