diff options
Diffstat (limited to 'drivers/video/console')
| -rw-r--r-- | drivers/video/console/newport_con.c | 12 | ||||
| -rw-r--r-- | drivers/video/console/vgacon.c | 7 |
2 files changed, 17 insertions, 2 deletions
diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c index 00dddf6e08b0..2d2ee17052e8 100644 --- a/drivers/video/console/newport_con.c +++ b/drivers/video/console/newport_con.c @@ -32,6 +32,8 @@ #include <linux/linux_logo.h> #include <linux/font.h> +#define NEWPORT_LEN 0x10000 + #define FONT_DATA ((unsigned char *)font_vga_8x16.data) /* borrowed from fbcon.c */ @@ -43,6 +45,7 @@ static unsigned char *font_data[MAX_NR_CONSOLES]; static struct newport_regs *npregs; +static unsigned long newport_addr; static int logo_active; static int topscan; @@ -702,7 +705,6 @@ const struct consw newport_con = { static int newport_probe(struct gio_device *dev, const struct gio_device_id *id) { - unsigned long newport_addr; int err; if (!dev->resource.start) @@ -712,7 +714,7 @@ static int newport_probe(struct gio_device *dev, return -EBUSY; /* we only support one Newport as console */ newport_addr = dev->resource.start + 0xF0000; - if (!request_mem_region(newport_addr, 0x10000, "Newport")) + if (!request_mem_region(newport_addr, NEWPORT_LEN, "Newport")) return -ENODEV; npregs = (struct newport_regs *)/* ioremap cannot fail */ @@ -720,6 +722,11 @@ static int newport_probe(struct gio_device *dev, console_lock(); err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1); console_unlock(); + + if (err) { + iounmap((void *)npregs); + release_mem_region(newport_addr, NEWPORT_LEN); + } return err; } @@ -727,6 +734,7 @@ static void newport_remove(struct gio_device *dev) { give_up_console(&newport_con); iounmap((void *)npregs); + release_mem_region(newport_addr, NEWPORT_LEN); } static struct gio_device_id newport_ids[] = { diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c index c6b3bdbbdbc9..e079b910feb2 100644 --- a/drivers/video/console/vgacon.c +++ b/drivers/video/console/vgacon.c @@ -251,6 +251,10 @@ static void vgacon_scrollback_update(struct vc_data *c, int t, int count) p = (void *) (c->vc_origin + t * c->vc_size_row); while (count--) { + if ((vgacon_scrollback_cur->tail + c->vc_size_row) > + vgacon_scrollback_cur->size) + vgacon_scrollback_cur->tail = 0; + scr_memcpyw(vgacon_scrollback_cur->data + vgacon_scrollback_cur->tail, p, c->vc_size_row); @@ -1316,6 +1320,9 @@ static int vgacon_font_get(struct vc_data *c, struct console_font *font) static int vgacon_resize(struct vc_data *c, unsigned int width, unsigned int height, unsigned int user) { + if ((width << 1) * height > vga_vram_size) + return -EINVAL; + if (width % 2 || width > screen_info.orig_video_cols || height > (screen_info.orig_video_lines * vga_default_font_height)/ c->vc_font.height) |