diff options
Diffstat (limited to 'drivers/firmware/dmi_scan.c')
| -rw-r--r-- | drivers/firmware/dmi_scan.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 5e596a7e3601..0b24a1141009 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -8,6 +8,8 @@ #include <linux/slab.h> #include <asm/dmi.h> +static char dmi_empty_string[] = " "; + static char * __init dmi_string(const struct dmi_header *dm, u8 s) { const u8 *bp = ((u8 *) dm) + dm->length; @@ -21,11 +23,16 @@ static char * __init dmi_string(const struct dmi_header *dm, u8 s) } if (*bp != 0) { - str = dmi_alloc(strlen(bp) + 1); + size_t len = strlen(bp)+1; + size_t cmp_len = len > 8 ? 8 : len; + + if (!memcmp(bp, dmi_empty_string, cmp_len)) + return dmi_empty_string; + str = dmi_alloc(len); if (str != NULL) strcpy(str, bp); else - printk(KERN_ERR "dmi_string: out of memory.\n"); + printk(KERN_ERR "dmi_string: cannot allocate %Zu bytes.\n", len); } } @@ -175,12 +182,23 @@ static void __init dmi_save_devices(const struct dmi_header *dm) } } +static struct dmi_device empty_oem_string_dev = { + .name = dmi_empty_string, +}; + static void __init dmi_save_oem_strings_devices(const struct dmi_header *dm) { int i, count = *(u8 *)(dm + 1); struct dmi_device *dev; for (i = 1; i <= count; i++) { + char *devname = dmi_string(dm, i); + + if (!strcmp(devname, dmi_empty_string)) { + list_add(&empty_oem_string_dev.list, &dmi_devices); + continue; + } + dev = dmi_alloc(sizeof(*dev)); if (!dev) { printk(KERN_ERR @@ -189,7 +207,7 @@ static void __init dmi_save_oem_strings_devices(const struct dmi_header *dm) } dev->type = DMI_DEV_TYPE_OEM_STRING; - dev->name = dmi_string(dm, i); + dev->name = devname; dev->device_data = NULL; list_add(&dev->list, &dmi_devices); |