diff options
| -rw-r--r-- | drivers/pnp/base.h | 2 | ||||
| -rw-r--r-- | drivers/pnp/isapnp/core.c | 32 | ||||
| -rw-r--r-- | drivers/pnp/pnpbios/core.c | 2 | ||||
| -rw-r--r-- | drivers/pnp/pnpbios/rsparser.c | 26 | ||||
| -rw-r--r-- | drivers/pnp/support.c | 26 |
5 files changed, 43 insertions, 45 deletions
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h index ba55b0623f7e..9af0a6c7dd41 100644 --- a/drivers/pnp/base.h +++ b/drivers/pnp/base.h @@ -1,5 +1,7 @@ extern spinlock_t pnp_lock; void *pnp_alloc(long size); +#define PNP_EISA_ID_MASK 0x7fffffff +void pnp_eisa_id_to_string(u32 id, char *str); struct pnp_id *pnp_add_id(struct pnp_dev *dev, char *id); int pnp_interface_attach_device(struct pnp_dev *dev); void pnp_fixup_device(struct pnp_dev *dev); diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c index 10cade831433..ccb04190044b 100644 --- a/drivers/pnp/isapnp/core.c +++ b/drivers/pnp/isapnp/core.c @@ -398,24 +398,6 @@ static void __init isapnp_skip_bytes(int count) } /* - * Parse EISA id. - */ -static void isapnp_parse_id(struct pnp_dev *dev, unsigned short vendor, - unsigned short device) -{ - char id[8]; - - sprintf(id, "%c%c%c%x%x%x%x", - 'A' + ((vendor >> 2) & 0x3f) - 1, - 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, - 'A' + ((vendor >> 8) & 0x1f) - 1, - (device >> 4) & 0x0f, - device & 0x0f, (device >> 12) & 0x0f, (device >> 8) & 0x0f); - - pnp_add_id(dev, id); -} - -/* * Parse logical device tag. */ static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, @@ -423,13 +405,17 @@ static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, { unsigned char tmp[6]; struct pnp_dev *dev; + u32 eisa_id; + char id[8]; isapnp_peek(tmp, size); dev = kzalloc(sizeof(struct pnp_dev), GFP_KERNEL); if (!dev) return NULL; dev->number = number; - isapnp_parse_id(dev, (tmp[1] << 8) | tmp[0], (tmp[3] << 8) | tmp[2]); + eisa_id = tmp[0] | tmp[1] << 8 | tmp[2] << 16 | tmp[3] << 24; + pnp_eisa_id_to_string(eisa_id, id); + pnp_add_id(dev, id); dev->regs = tmp[4]; dev->card = card; if (size > 5) @@ -619,6 +605,8 @@ static int __init isapnp_create_device(struct pnp_card *card, unsigned char type, tmp[17]; struct pnp_option *option; struct pnp_dev *dev; + u32 eisa_id; + char id[8]; if ((dev = isapnp_parse_device(card, size, number++)) == NULL) return 1; @@ -658,8 +646,10 @@ static int __init isapnp_create_device(struct pnp_card *card, case _STAG_COMPATDEVID: if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { isapnp_peek(tmp, 4); - isapnp_parse_id(dev, (tmp[1] << 8) | tmp[0], - (tmp[3] << 8) | tmp[2]); + eisa_id = tmp[0] | tmp[1] << 8 | + tmp[2] << 16 | tmp[3] << 24; + pnp_eisa_id_to_string(eisa_id, id); + pnp_add_id(dev, id); compat++; size = 0; } diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c index 2d592aea0aa7..3ee5ed437385 100644 --- a/drivers/pnp/pnpbios/core.c +++ b/drivers/pnp/pnpbios/core.c @@ -332,7 +332,7 @@ static int __init insert_device(struct pnp_bios_node *node) if (!dev) return -1; - pnpid32_to_pnpid(node->eisa_id, id); + pnp_eisa_id_to_string(node->eisa_id & PNP_EISA_ID_MASK, id); dev_id = pnp_add_id(dev, id); if (!dev_id) { kfree(dev); diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c index dbc88412c12e..948a661280d7 100644 --- a/drivers/pnp/pnpbios/rsparser.c +++ b/drivers/pnp/pnpbios/rsparser.c @@ -494,32 +494,12 @@ len_err: * Compatible Device IDs */ -#define HEX(id,a) hex[((id)>>a) & 15] -#define CHAR(id,a) (0x40 + (((id)>>a) & 31)) - -void pnpid32_to_pnpid(u32 id, char *str) -{ - const char *hex = "0123456789abcdef"; - - id = be32_to_cpu(id); - str[0] = CHAR(id, 26); - str[1] = CHAR(id, 21); - str[2] = CHAR(id, 16); - str[3] = HEX(id, 12); - str[4] = HEX(id, 8); - str[5] = HEX(id, 4); - str[6] = HEX(id, 0); - str[7] = '\0'; -} - -#undef CHAR -#undef HEX - static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_dev *dev) { int len, tag; + u32 eisa_id; char id[8]; struct pnp_id *dev_id; @@ -549,8 +529,8 @@ static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, case SMALL_TAG_COMPATDEVID: /* compatible ID */ if (len != 4) goto len_err; - pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << - 24, id); + eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; + pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); dev_id = pnp_add_id(dev, id); if (!dev_id) return NULL; diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c index 13c608f5fb30..e848b794e312 100644 --- a/drivers/pnp/support.c +++ b/drivers/pnp/support.c @@ -25,3 +25,29 @@ int pnp_is_active(struct pnp_dev *dev) } EXPORT_SYMBOL(pnp_is_active); + +/* + * Functionally similar to acpi_ex_eisa_id_to_string(), but that's + * buried in the ACPI CA, and we can't depend on it being present. + */ +void pnp_eisa_id_to_string(u32 id, char *str) +{ + id = be32_to_cpu(id); + + /* + * According to the specs, the first three characters are five-bit + * compressed ASCII, and the left-over high order bit should be zero. + * However, the Linux ISAPNP code historically used six bits for the + * first character, and there seem to be IDs that depend on that, + * e.g., "nEC8241" in the Linux 8250_pnp serial driver and the + * FreeBSD sys/pc98/cbus/sio_cbus.c driver. + */ + str[0] = 'A' + ((id >> 26) & 0x3f) - 1; + str[1] = 'A' + ((id >> 21) & 0x1f) - 1; + str[2] = 'A' + ((id >> 16) & 0x1f) - 1; + str[3] = hex_asc((id >> 12) & 0xf); + str[4] = hex_asc((id >> 8) & 0xf); + str[5] = hex_asc((id >> 4) & 0xf); + str[6] = hex_asc((id >> 0) & 0xf); + str[7] = '\0'; +} |