The patch titled
mmc: add Extended CSD as a device attribute
has been added to the -mm tree. Its filename is
mmc-add-extended-csd-as-a-device-attribute.patch
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------------------------------------------------------
Subject: mmc: add Extended CSD as a device attribute
From: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>
Signed-off-by: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>
Cc: Pierre Ossman <drzeus-list@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/core/mmc.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff -puN drivers/mmc/core/mmc.c~mmc-add-extended-csd-as-a-device-attribute drivers/mmc/core/mmc.c
--- a/drivers/mmc/core/mmc.c~mmc-add-extended-csd-as-a-device-attribute
+++ a/drivers/mmc/core/mmc.c
@@ -259,6 +259,34 @@ MMC_DEV_ATTR(name, "%s\n", card->cid.pro
MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial);
+static ssize_t mmc_ext_csd_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct mmc_card *card = container_of(dev, struct mmc_card, dev);
+ ssize_t n = 0;
+ u8 *ext_csd;
+ int err, i;
+
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd)
+ return 0;
+
+ mmc_claim_host(card->host);
+ err = mmc_send_ext_csd(card, ext_csd);
+ mmc_release_host(card->host);
+
+ if (!err) {
+ for (i = 511; i >= 0; i--)
+ n += sprintf(buf + n, "%02x", (unsigned)ext_csd[i]);
+ n += sprintf(buf + n, "\n");
+ }
+
+ kfree(ext_csd);
+
+ return n;
+}
+
+static DEVICE_ATTR(ext_csd, S_IRUGO, mmc_ext_csd_show, NULL);
+
static struct attribute *mmc_std_attrs[] = {
&dev_attr_cid.attr,
&dev_attr_csd.attr,
@@ -269,6 +297,7 @@ static struct attribute *mmc_std_attrs[]
&dev_attr_name.attr,
&dev_attr_oemid.attr,
&dev_attr_serial.attr,
+ &dev_attr_ext_csd.attr,
NULL,
};
_
Patches currently in -mm which might be from ext-adrian.hunter@xxxxxxxxx are
mmc-add-extended-csd-as-a-device-attribute.patch
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