diff options
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/test/ntb_tool.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/ntb/test/ntb_tool.c b/drivers/ntb/test/ntb_tool.c index 209ef7ceb98a..a0ead31cd799 100644 --- a/drivers/ntb/test/ntb_tool.c +++ b/drivers/ntb/test/ntb_tool.c @@ -239,7 +239,14 @@ static ssize_t tool_spadfn_read(struct tool_ctx *tc, char __user *ubuf, if (!spad_read_fn) return -EINVAL; - buf_size = min_t(size_t, size, 0x100); + spad_count = ntb_spad_count(tc->ntb); + + /* + * We multiply the number of spads by 15 to get the buffer size + * this is from 3 for the %d, 10 for the largest hex value + * (0x00000000) and 2 for the tab and line feed. + */ + buf_size = min_t(size_t, size, spad_count * 15); buf = kmalloc(buf_size, GFP_KERNEL); if (!buf) @@ -247,7 +254,6 @@ static ssize_t tool_spadfn_read(struct tool_ctx *tc, char __user *ubuf, pos = 0; - spad_count = ntb_spad_count(tc->ntb); for (i = 0; i < spad_count; ++i) { pos += scnprintf(buf + pos, buf_size - pos, "%d\t%#x\n", i, spad_read_fn(tc->ntb, i)); |