Commit 875826a7 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Martin K. Petersen

scsi: megaraid: fix format-overflow warning

gcc-7 complains that the firmware version strings might overflow
for some values:

drivers/scsi/megaraid.c: In function 'megaraid_probe_one':
drivers/scsi/megaraid.c:314:33: error: '%d' directive writing between 1 and 2 bytes into a region of size between 1 and 2 [-Werror=format-overflow=]
drivers/scsi/megaraid.c:314:33: note: directive argument in the range [0, 15]
drivers/scsi/megaraid.c:314:3: note: 'sprintf' output between 7 and 9 bytes into a destination of size 7
drivers/scsi/megaraid.c:320:35: error: '%d' directive writing between 1 and 2 bytes into a region of size between 1 and 2 [-Werror=format-overflow=]
drivers/scsi/megaraid.c:320:35: note: directive argument in the range [0, 15]
drivers/scsi/megaraid.c:320:3: note: 'sprintf' output between 7 and 9 bytes into a destination of size 7

This makes the code use a truncating snprintf() instead, which shuts
up that warning.
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a7ec87a9
...@@ -311,13 +311,15 @@ mega_query_adapter(adapter_t *adapter) ...@@ -311,13 +311,15 @@ mega_query_adapter(adapter_t *adapter)
right 8 bits making them zero. This 0 value was hardcoded to fix right 8 bits making them zero. This 0 value was hardcoded to fix
sparse warnings. */ sparse warnings. */
if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
sprintf (adapter->fw_version, "%c%d%d.%d%d", snprintf(adapter->fw_version, sizeof(adapter->fw_version),
"%c%d%d.%d%d",
adapter->product_info.fw_version[2], adapter->product_info.fw_version[2],
0, 0,
adapter->product_info.fw_version[1] & 0x0f, adapter->product_info.fw_version[1] & 0x0f,
0, 0,
adapter->product_info.fw_version[0] & 0x0f); adapter->product_info.fw_version[0] & 0x0f);
sprintf (adapter->bios_version, "%c%d%d.%d%d", snprintf(adapter->bios_version, sizeof(adapter->fw_version),
"%c%d%d.%d%d",
adapter->product_info.bios_version[2], adapter->product_info.bios_version[2],
0, 0,
adapter->product_info.bios_version[1] & 0x0f, adapter->product_info.bios_version[1] & 0x0f,
......
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