diff options
| -rw-r--r-- | drivers/tty/vt/vc_screen.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c index 3e3a6a9a7f44..1850bacdb5b0 100644 --- a/drivers/tty/vt/vc_screen.c +++ b/drivers/tty/vt/vc_screen.c @@ -293,22 +293,6 @@ static void vcs_read_buf_noattr(const struct vc_data *vc, char *con_buf, } } -static unsigned int vcs_read_buf_header(const struct vc_data *vc, char *con_buf, - unsigned int pos, unsigned int count) -{ - count = min(HEADER_SIZE - pos, count); - - /* clamp header values if they don't fit */ - con_buf[0] = min(vc->vc_rows, 0xFFu); - con_buf[1] = min(vc->vc_cols, 0xFFu); - getconsxy(vc, con_buf + 2); - - if (pos) - memmove(con_buf, con_buf + pos, count); - - return count; -} - static unsigned int vcs_read_buf(const struct vc_data *vc, char *con_buf, unsigned int pos, unsigned int count, bool viewed, unsigned int *skip) @@ -318,11 +302,22 @@ static unsigned int vcs_read_buf(const struct vc_data *vc, char *con_buf, unsigned int filled = count; if (pos < HEADER_SIZE) { - count -= vcs_read_buf_header(vc, con_buf, pos, count); + /* clamp header values if they don't fit */ + con_buf[0] = min(vc->vc_rows, 0xFFu); + con_buf[1] = min(vc->vc_cols, 0xFFu); + getconsxy(vc, con_buf + 2); + + *skip += pos; + count += pos; + if (count > CON_BUF_SIZE) { + count = CON_BUF_SIZE; + filled = count - pos; + } + /* Advance state pointers and move on. */ + count -= min(HEADER_SIZE, count); pos = HEADER_SIZE; con_buf += HEADER_SIZE; - /* If count >= 0, then pos is even... */ } else if (pos & 1) { /* |