diff options
| author | Florian Tobias Schandinat | 2009-09-22 16:47:34 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2009-09-23 07:39:53 -0700 |
| commit | 5ff32f69e75deca5ee1a2f421ca8a3e43cfaa339 (patch) | |
| tree | ce934068e33d0053eb85992316bbf942215e6984 | |
| parent | 837b0abba19a0ac7840f41debe267da2e2add6a7 (diff) | |
viafb: use read-only mode parsing
viafb: use read-only mode parsing
The previous method of mode parsing wrote to the strings resulting in
truncated mode strings in the sysfs.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Harald Welte <laforge@gnumonks.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/via/viafbdev.c | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index 94ade1f9ff72..61e652cb2138 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -1821,11 +1821,29 @@ static void viafb_remove_proc(struct proc_dir_entry *viafb_entry) remove_proc_entry("viafb", NULL); } +static void parse_mode(const char *str, u32 *xres, u32 *yres) +{ + char *ptr; + + *xres = simple_strtoul(str, &ptr, 10); + if (ptr[0] != 'x') + goto out_default; + + *yres = simple_strtoul(&ptr[1], &ptr, 10); + if (ptr[0]) + goto out_default; + + return; + +out_default: + printk(KERN_WARNING "viafb received invalid mode string: %s\n", str); + *xres = 640; + *yres = 480; +} + static int __devinit via_pci_probe(void) { - unsigned long default_xres, default_yres; - char *tmpc, *tmpm; - char *tmpc_sec, *tmpm_sec; + u32 default_xres, default_yres; int vmode_index; u32 viafb_par_length; @@ -1902,26 +1920,14 @@ static int __devinit via_pci_probe(void) viafb_second_size * 1024 * 1024; } - tmpm = viafb_mode; - tmpc = strsep(&tmpm, "x"); - strict_strtoul(tmpc, 0, &default_xres); - strict_strtoul(tmpm, 0, &default_yres); - + parse_mode(viafb_mode, &default_xres, &default_yres); vmode_index = viafb_get_mode_index(default_xres, default_yres); DEBUG_MSG(KERN_INFO "0->index=%d\n", vmode_index); if (viafb_SAMM_ON == 1) { - if (strcmp(viafb_mode, viafb_mode1)) { - tmpm_sec = viafb_mode1; - tmpc_sec = strsep(&tmpm_sec, "x"); - strict_strtoul(tmpc_sec, 0, - (unsigned long *)&viafb_second_xres); - strict_strtoul(tmpm_sec, 0, - (unsigned long *)&viafb_second_yres); - } else { - viafb_second_xres = default_xres; - viafb_second_yres = default_yres; - } + parse_mode(viafb_mode1, &viafb_second_xres, + &viafb_second_yres); + if (0 == viafb_second_virtual_xres) { switch (viafb_second_xres) { case 1400: |