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cmd: sf/nand: Print and return failure when 0 length is passed

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For sf commands, when '0' length is passed for erase, update, write or
read, there might be undesired results. Ideally '0' length means nothing to
do.

So print 'ERROR: Invalid size 0' and return cmd failure when length '0' is
passed to sf commands. Same thing applies for nand commands also.

Example:

ZynqMP> sf erase 0 0
ERROR: Invalid size 0
ZynqMP> sf write 10000 0 0
ERROR: Invalid size 0
ZynqMP> sf read 10000 0 0
ERROR: Invalid size 0
ZynqMP> sf update 1000 10000 0
ERROR: Invalid size 0
ZynqMP>

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20230516115236.22458-1-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Ashok Reddy Soma 2023-05-16 05:52:36 -06:00 committed by Michal Simek
parent b4501aa028
commit f5aa35c932
2 changed files with 10 additions and 0 deletions
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5
cmd/legacy-mtd-utils.c
View file

@ -88,6 +88,11 @@ int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off,
return -1; return -1;
} }
if (*size == 0) {
debug("ERROR: Invalid size 0\n");
return -1;
}
print: print:
printf("device %d ", *idx); printf("device %d ", *idx);
if (*size == chipsize) if (*size == chipsize)

5
cmd/sf.c
View file

@ -353,6 +353,11 @@ static int do_spi_flash_erase(int argc, char *const argv[])
if (ret != 1) if (ret != 1)
return CMD_RET_USAGE; return CMD_RET_USAGE;
if (size == 0) {
debug("ERROR: Invalid size 0\n");
return CMD_RET_FAILURE;
}
/* Consistency checking */ /* Consistency checking */
if (offset + size > flash->size) { if (offset + size > flash->size) {
printf("ERROR: attempting %s past flash size (%#x)\n", printf("ERROR: attempting %s past flash size (%#x)\n",