diff options
| -rw-r--r-- | drivers/tty/vt/vt.c | 85 |
1 files changed, 36 insertions, 49 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index f81f77464f85..40d71cfdec32 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -357,18 +357,14 @@ static void vc_uniscr_set(struct vc_data *vc, u32 **new_uni_lines) static void vc_uniscr_putc(struct vc_data *vc, u32 uc) { - u32 **uni_lines = vc->vc_uni_lines; - - if (uni_lines) - uni_lines[vc->state.y][vc->state.x] = uc; + if (vc->vc_uni_lines) + vc->vc_uni_lines[vc->state.y][vc->state.x] = uc; } static void vc_uniscr_insert(struct vc_data *vc, unsigned int nr) { - u32 **uni_lines = vc->vc_uni_lines; - - if (uni_lines) { - u32 *ln = uni_lines[vc->state.y]; + if (vc->vc_uni_lines) { + u32 *ln = vc->vc_uni_lines[vc->state.y]; unsigned int x = vc->state.x, cols = vc->vc_cols; memmove(&ln[x + nr], &ln[x], (cols - x - nr) * sizeof(*ln)); @@ -378,10 +374,8 @@ static void vc_uniscr_insert(struct vc_data *vc, unsigned int nr) static void vc_uniscr_delete(struct vc_data *vc, unsigned int nr) { - u32 **uni_lines = vc->vc_uni_lines; - - if (uni_lines) { - u32 *ln = uni_lines[vc->state.y]; + if (vc->vc_uni_lines) { + u32 *ln = vc->vc_uni_lines[vc->state.y]; unsigned int x = vc->state.x, cols = vc->vc_cols; memcpy(&ln[x], &ln[x + nr], (cols - x - nr) * sizeof(*ln)); @@ -392,59 +386,52 @@ static void vc_uniscr_delete(struct vc_data *vc, unsigned int nr) static void vc_uniscr_clear_line(struct vc_data *vc, unsigned int x, unsigned int nr) { - u32 **uni_lines = vc->vc_uni_lines; - - if (uni_lines) { - u32 *ln = uni_lines[vc->state.y]; - - memset32(&ln[x], ' ', nr); - } + if (vc->vc_uni_lines) + memset32(&vc->vc_uni_lines[vc->state.y][x], ' ', nr); } static void vc_uniscr_clear_lines(struct vc_data *vc, unsigned int y, unsigned int nr) { - u32 **uni_lines = vc->vc_uni_lines; - - if (uni_lines) { - unsigned int cols = vc->vc_cols; - + if (vc->vc_uni_lines) while (nr--) - memset32(uni_lines[y++], ' ', cols); - } + memset32(vc->vc_uni_lines[y++], ' ', vc->vc_cols); } static void vc_uniscr_scroll(struct vc_data *vc, unsigned int t, unsigned int b, enum con_scroll dir, unsigned int nr) { u32 **uni_lines = vc->vc_uni_lines; + unsigned int i, j, k, sz, d, clear; - if (uni_lines) { - unsigned int i, j, k, sz, d, clear; + if (!uni_lines) + return; - sz = b - t; - clear = b - nr; - d = nr; - if (dir == SM_DOWN) { - clear = t; - d = sz - nr; - } - for (i = 0; i < gcd(d, sz); i++) { - u32 *tmp = uni_lines[t + i]; - j = i; - while (1) { - k = j + d; - if (k >= sz) - k -= sz; - if (k == i) - break; - uni_lines[t + j] = uni_lines[t + k]; - j = k; - } - uni_lines[t + j] = tmp; + sz = b - t; + clear = b - nr; + d = nr; + + if (dir == SM_DOWN) { + clear = t; + d = sz - nr; + } + + for (i = 0; i < gcd(d, sz); i++) { + u32 *tmp = uni_lines[t + i]; + j = i; + while (1) { + k = j + d; + if (k >= sz) + k -= sz; + if (k == i) + break; + uni_lines[t + j] = uni_lines[t + k]; + j = k; } - vc_uniscr_clear_lines(vc, clear, nr); + uni_lines[t + j] = tmp; } + + vc_uniscr_clear_lines(vc, clear, nr); } static void vc_uniscr_copy_area(u32 **dst_lines, |