The patch titled mmc: add Extended CSD register to debugfs has been added to the -mm tree. Its filename is mmc-add-extended-csd-register-to-debugfs.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: mmc: add Extended CSD register to debugfs From: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx> Extended CSD is a MMC card register. As increasingly interesting fields are being added to Extended CSD, it is helpful to see its value. Note that SD cards do not have an Extended CSD register, so it is MMC only. Signed-off-by: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx> Cc: Pierre Ossman <drzeus-mmc@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/mmc/core/debugfs.c | 67 +++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) diff -puN drivers/mmc/core/debugfs.c~mmc-add-extended-csd-register-to-debugfs drivers/mmc/core/debugfs.c --- a/drivers/mmc/core/debugfs.c~mmc-add-extended-csd-register-to-debugfs +++ a/drivers/mmc/core/debugfs.c @@ -184,6 +184,68 @@ static int mmc_dbg_card_status_get(void DEFINE_SIMPLE_ATTRIBUTE(mmc_dbg_card_status_fops, mmc_dbg_card_status_get, NULL, "%08llx\n"); +#define EXT_CSD_STR_LEN 1025 + +static int mmc_ext_csd_open(struct inode *inode, struct file *filp) +{ + struct mmc_card *card = inode->i_private; + char *buf; + ssize_t n = 0; + u8 *ext_csd; + int err, i; + + buf = kmalloc(EXT_CSD_STR_LEN + 1, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + ext_csd = kmalloc(512, GFP_KERNEL); + if (!ext_csd) { + err = -ENOMEM; + goto out_free; + } + + mmc_claim_host(card->host); + err = mmc_send_ext_csd(card, ext_csd); + mmc_release_host(card->host); + if (err) + goto out_free; + + for (i = 511; i >= 0; i--) + n += sprintf(buf + n, "%02x", ext_csd[i]); + n += sprintf(buf + n, "\n"); + BUG_ON(n != EXT_CSD_STR_LEN); + + filp->private_data = buf; + kfree(ext_csd); + return 0; + +out_free: + kfree(buf); + kfree(ext_csd); + return err; +} + +static ssize_t mmc_ext_csd_read(struct file *filp, char __user *ubuf, + size_t cnt, loff_t *ppos) +{ + char *buf = filp->private_data; + + return simple_read_from_buffer(ubuf, cnt, ppos, + buf, EXT_CSD_STR_LEN); +} + +static int mmc_ext_csd_release(struct inode *inode, struct file *file) +{ + kfree(file->private_data); + return 0; +} + +static struct file_operations mmc_dbg_ext_csd_fops = { + .open = mmc_ext_csd_open, + .read = mmc_ext_csd_read, + .release = mmc_ext_csd_release, +}; + void mmc_add_card_debugfs(struct mmc_card *card) { struct mmc_host *host = card->host; @@ -211,6 +273,11 @@ void mmc_add_card_debugfs(struct mmc_car &mmc_dbg_card_status_fops)) goto err; + if (mmc_card_mmc(card)) + if (!debugfs_create_file("ext_csd", S_IRUSR, root, card, + &mmc_dbg_ext_csd_fops)) + goto err; + return; err: _ Patches currently in -mm which might be from ext-adrian.hunter@xxxxxxxxx are origin.patch linux-next.patch mmc-add-extended-csd-register-to-debugfs.patch mmc_core-fix-data-timeout-for-send_ext_csd.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html