On Tue, Jul 31, 2012 at 03:42:56PM +0800, wei_wang@realsil.com.cn wrote:

From: Wei WANG <redacted>

Realtek SD/MMC card interface driver is used to access
SD/MMC card, with the help of Realtek card reader adapter driver.

Signed-off-by: Wei WANG <redacted>
---

[ … ]

+static void __devexit realtek_sdmmc_remove(struct rtsx_dev *sock)
+{
+	struct mmc_host *mmc = rtsx_get_drvdata(sock);
+	struct realtek_sdmmc *host;
+
+	host = mmc_priv(mmc);
+	host->eject = 1;
+
+	mutex_lock(&host->host_mutex);
+	if (host->mrq) {
+		dev_dbg(&(sock->dev),
+			"%s: Controller removed during transfer\n",
+			mmc_hostname(mmc));
+
+		rtsx_complete_unfinished_transfer(sock);
+
+		host->mrq->cmd->error = -ENOMEDIUM;
+		if (host->mrq->stop)
+			host->mrq->stop->error = -ENOMEDIUM;
+		mmc_request_done(mmc, host->mrq);
+	}
+	mutex_unlock(&host->host_mutex);
+
+	mmc_remove_host(mmc);
+	mmc_free_host(mmc);
+
+	pr_info(DRV_NAME
+		": Realtek SDMMC controller has been removed\n");

Oh and this appears in the logs when I remove the card:

[11721.313471] rtsx_sdmmc: Realtek SDMMC controller has been removed

but it is simply polluting the logs with useless info that a card has
been removed.

If you really need those printk (same with the PCI-E driver) you could
try to use dev_dbg() like you do above.

Same for the probe function.

But, more importantly and while playing with this, I replugged the card
and it said:

[12072.632332] rtsx_core: MMC/SD card detected in socket 0:0
[12072.642855] rtsx_sdmmc: Realtek SDMMC controller found
[12073.839561] mmc0: error -110 whilst initialising SD card
[12075.138833] mmc0: error -110 whilst initialising SD card
[12076.438158] mmc0: error -110 whilst initialising SD card

and now I can't mount the card anymore:

$ mount /dev/mmcblk0 /mnt/tmp/
mount: /dev/mmcblk0 is not a valid block device

$ mount /dev/mmcblk0p1 /mnt/tmp/
mount: /dev/mmcblk0p1 is not a valid block device

Hmm..

-- 
Regards/Gruss,
Boris.