[SCSI] aacraid: use lower snprintf() limit

This is just a cleanup, to silence static checker warnings.  It
doesn't change how the code works.

buf[] can either be BUF_SIZE if this is called from sysfs, or it can
be 16 if it's called from aac_get_adapter_info() via
aac_get_serial_number().  We use the smaller limit here.

sizeof(dev->supplement_adapter_info.MfgPcbaSerialNo) is 12 so there
is actually no chance of hitting either limit.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Achim Leubner <Achim_Leubner@pmc-sierra.com> 
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 3382475dc22d..4aa76d6f11df 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -894,16 +894,17 @@ static ssize_t aac_show_serial_number(struct device *device,
         int len = 0;
 
         if (le32_to_cpu(dev->adapter_info.serial[0]) != 0xBAD0)
-                len = snprintf(buf, PAGE_SIZE, "%06X\n",
+                len = snprintf(buf, 16, "%06X\n",
                   le32_to_cpu(dev->adapter_info.serial[0]));
         if (len &&
           !memcmp(&dev->supplement_adapter_info.MfgPcbaSerialNo[
             sizeof(dev->supplement_adapter_info.MfgPcbaSerialNo)-len],
           buf, len-1))
-                len = snprintf(buf, PAGE_SIZE, "%.*s\n",
+                len = snprintf(buf, 16, "%.*s\n",
                   (int)sizeof(dev->supplement_adapter_info.MfgPcbaSerialNo),
                   dev->supplement_adapter_info.MfgPcbaSerialNo);
-        return len;
+
+        return min(len, 16);
 }
 
 static ssize_t aac_show_max_channel(struct device *device,