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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2005-06-27 16:29:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-27 18:03:22 -0700 |
| commit | 3248ff43f86493368b321376d447d84fa9a2737d (patch) | |
| tree | 36b11c42479f7370e669f8c6747501ad5a72795b /drivers/pcmcia/ds.c | |
| parent | 57b6281cea59639cce995745f1dc42fe9da2c533 (diff) | |
| download | lwn-3248ff43f86493368b321376d447d84fa9a2737d.tar.gz lwn-3248ff43f86493368b321376d447d84fa9a2737d.zip | |
[PATCH] pcmcia: export modalias in sysfs
Provide a "modalias" entry in sysfs for PCMCIA devices.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/pcmcia/ds.c')
| -rw-r--r-- | drivers/pcmcia/ds.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index f018d26f1817..cabddd49f6ff 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -847,9 +847,29 @@ pcmcia_device_stringattr(prod_id2, prod_id[1]); pcmcia_device_stringattr(prod_id3, prod_id[2]); pcmcia_device_stringattr(prod_id4, prod_id[3]); +static ssize_t modalias_show(struct device *dev, char *buf) +{ + struct pcmcia_device *p_dev = to_pcmcia_dev(dev); + int i; + u32 hash[4] = { 0, 0, 0, 0}; + + /* calculate hashes */ + for (i=0; i<4; i++) { + if (!p_dev->prod_id[i]) + continue; + hash[i] = crc32(0,p_dev->prod_id[i],strlen(p_dev->prod_id[i])); + } + return sprintf(buf, "pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" + "pa%08Xpb%08Xpc%08Xpd%08X\n", + p_dev->has_manf_id ? p_dev->manf_id : 0, + p_dev->has_card_id ? p_dev->card_id : 0, + p_dev->has_func_id ? p_dev->func_id : 0, + p_dev->func, p_dev->device_no, + hash[0], hash[1], hash[2], hash[3]); +} -static ssize_t pcmcia_store_allow_func_id_match (struct device * dev, struct device_attribute *attr, - const char * buf, size_t count) +static ssize_t pcmcia_store_allow_func_id_match(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) { struct pcmcia_device *p_dev = to_pcmcia_dev(dev); if (!count) @@ -873,6 +893,7 @@ static struct device_attribute pcmcia_dev_attrs[] = { __ATTR_RO(prod_id2), __ATTR_RO(prod_id3), __ATTR_RO(prod_id4), + __ATTR_RO(modalias), __ATTR(allow_func_id_match, 0200, NULL, pcmcia_store_allow_func_id_match), __ATTR_NULL, }; |