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path: root/drivers/pcmcia
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Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/ds.c25
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index f018d26f181..cabddd49f6f 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,
};