redonkable/remarkable-linux
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[PATCH] mmc: conditional scr sysfs entry

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Only show the scr file in sysfs for SD cards.  Previously this was present
for all cards but had a contents of 0 for MMC cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pierre Ossman 2005-09-06 15:18:58 -07:00 committed by Linus Torvalds
parent 65ae2118e8
commit 4bc20a8d49
1 changed files with 18 additions and 3 deletions
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21
drivers/mmc/mmc_sysfs.c
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@ -48,7 +48,6 @@ MMC_ATTR(serial, "0x%08x\n", card->cid.serial);
static struct device_attribute mmc_dev_attrs[] = {
MMC_ATTR_RO(cid),
MMC_ATTR_RO(csd),
MMC_ATTR_RO(scr),
MMC_ATTR_RO(date),
MMC_ATTR_RO(fwrev),
MMC_ATTR_RO(hwrev),
@ -59,6 +58,8 @@ static struct device_attribute mmc_dev_attrs[] = {
__ATTR_NULL
};
static struct device_attribute mmc_dev_attr_scr = MMC_ATTR_RO(scr);
static void mmc_release_card(struct device *dev)
{
@ -209,10 +210,20 @@ void mmc_init_card(struct mmc_card *card, struct mmc_host *host)
*/
int mmc_register_card(struct mmc_card *card)
{
int ret;
snprintf(card->dev.bus_id, sizeof(card->dev.bus_id),
"%s:%04x", mmc_hostname(card->host), card->rca);
return device_add(&card->dev);
ret = device_add(&card->dev);
if (ret == 0) {
if (mmc_card_sd(card)) {
ret = device_create_file(&card->dev, &mmc_dev_attr_scr);
if (ret)
device_del(&card->dev);
}
}
return ret;
}
/*
@ -221,8 +232,12 @@ int mmc_register_card(struct mmc_card *card)
*/
void mmc_remove_card(struct mmc_card *card)
{
if (mmc_card_present(card))
if (mmc_card_present(card)) {
if (mmc_card_sd(card))
device_remove_file(&card->dev, &mmc_dev_attr_scr);
device_del(&card->dev);
}
put_device(&card->dev);
}