diff options
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/xenbus/xenbus_xs.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c index 6f0121e3be6..226d1ac55cf 100644 --- a/drivers/xen/xenbus/xenbus_xs.c +++ b/drivers/xen/xenbus/xenbus_xs.c @@ -532,21 +532,18 @@ int xenbus_printf(struct xenbus_transaction t, { va_list ap; int ret; -#define PRINTF_BUFFER_SIZE 4096 - char *printf_buffer; - - printf_buffer = kmalloc(PRINTF_BUFFER_SIZE, GFP_NOIO | __GFP_HIGH); - if (printf_buffer == NULL) - return -ENOMEM; + char *buf; va_start(ap, fmt); - ret = vsnprintf(printf_buffer, PRINTF_BUFFER_SIZE, fmt, ap); + buf = kvasprintf(GFP_NOIO | __GFP_HIGH, fmt, ap); va_end(ap); - BUG_ON(ret > PRINTF_BUFFER_SIZE-1); - ret = xenbus_write(t, dir, node, printf_buffer); + if (!buf) + return -ENOMEM; + + ret = xenbus_write(t, dir, node, buf); - kfree(printf_buffer); + kfree(buf); return ret; } |