These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 178 insertions, 66 deletions

diff --git a/kernel/drivers/mmc/card/block.c b/kernel/drivers/mmc/card/block.c
index 31d2627d9..d84861684 100644
--- a/kernel/drivers/mmc/card/block.c
+++ b/kernel/drivers/mmc/card/block.c
@@ -47,10 +47,13 @@
 #include "queue.h"
 
 MODULE_ALIAS("mmc:block");
+
+#ifdef KERNEL
 #ifdef MODULE_PARAM_PREFIX
 #undef MODULE_PARAM_PREFIX
 #endif
 #define MODULE_PARAM_PREFIX "mmcblk."
+#endif
 
 #define INAND_CMD38_ARG_EXT_CSD  113
 #define INAND_CMD38_ARG_ERASE    0x00
@@ -62,8 +65,7 @@ MODULE_ALIAS("mmc:block");
 #define MMC_SANITIZE_REQ_TIMEOUT 240000
 #define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16)
 
-#define mmc_req_rel_wr(req)	(((req->cmd_flags & REQ_FUA) || \
-				  (req->cmd_flags & REQ_META)) && \
+#define mmc_req_rel_wr(req)	((req->cmd_flags & REQ_FUA) && \
 				  (rq_data_dir(req) == WRITE))
 #define PACKED_CMD_VER	0x01
 #define PACKED_CMD_WR	0x02
@@ -384,6 +386,24 @@ out:
 	return ERR_PTR(err);
 }
 
+static int mmc_blk_ioctl_copy_to_user(struct mmc_ioc_cmd __user *ic_ptr,
+				      struct mmc_blk_ioc_data *idata)
+{
+	struct mmc_ioc_cmd *ic = &idata->ic;
+
+	if (copy_to_user(&(ic_ptr->response), ic->response,
+			 sizeof(ic->response)))
+		return -EFAULT;
+
+	if (!idata->ic.write_flag) {
+		if (copy_to_user((void __user *)(unsigned long)ic->data_ptr,
+				 idata->buf, idata->buf_bytes))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
 static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status,
 				       u32 retries_max)
 {
@@ -444,12 +464,9 @@ out:
 	return err;
 }
 
-static int mmc_blk_ioctl_cmd(struct block_device *bdev,
-	struct mmc_ioc_cmd __user *ic_ptr)
+static int __mmc_blk_ioctl_cmd(struct mmc_card *card, struct mmc_blk_data *md,
+			       struct mmc_blk_ioc_data *idata)
 {
-	struct mmc_blk_ioc_data *idata;
-	struct mmc_blk_data *md;
-	struct mmc_card *card;
 	struct mmc_command cmd = {0};
 	struct mmc_data data = {0};
 	struct mmc_request mrq = {NULL};
@@ -458,33 +475,12 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	int is_rpmb = false;
 	u32 status = 0;
 
-	/*
-	 * The caller must have CAP_SYS_RAWIO, and must be calling this on the
-	 * whole block device, not on a partition.  This prevents overspray
-	 * between sibling partitions.
-	 */
-	if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains))
-		return -EPERM;
-
-	idata = mmc_blk_ioctl_copy_from_user(ic_ptr);
-	if (IS_ERR(idata))
-		return PTR_ERR(idata);
-
-	md = mmc_blk_get(bdev->bd_disk);
-	if (!md) {
-		err = -EINVAL;
-		goto cmd_err;
-	}
+	if (!card || !md || !idata)
+		return -EINVAL;
 
 	if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
 		is_rpmb = true;
 
-	card = md->queue.card;
-	if (IS_ERR(card)) {
-		err = PTR_ERR(card);
-		goto cmd_done;
-	}
-
 	cmd.opcode = idata->ic.opcode;
 	cmd.arg = idata->ic.arg;
 	cmd.flags = idata->ic.flags;
@@ -527,23 +523,21 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 
 	mrq.cmd = &cmd;
 
-	mmc_get_card(card);
-
 	err = mmc_blk_part_switch(card, md);
 	if (err)
-		goto cmd_rel_host;
+		return err;
 
 	if (idata->ic.is_acmd) {
 		err = mmc_app_cmd(card->host, card);
 		if (err)
-			goto cmd_rel_host;
+			return err;
 	}
 
 	if (is_rpmb) {
 		err = mmc_set_blockcount(card, data.blocks,
 			idata->ic.write_flag & (1 << 31));
 		if (err)
-			goto cmd_rel_host;
+			return err;
 	}
 
 	if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_SANITIZE_START) &&
@@ -554,7 +548,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 			pr_err("%s: ioctl_do_sanitize() failed. err = %d",
 			       __func__, err);
 
-		goto cmd_rel_host;
+		return err;
 	}
 
 	mmc_wait_for_req(card->host, &mrq);
@@ -562,14 +556,12 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	if (cmd.error) {
 		dev_err(mmc_dev(card->host), "%s: cmd error %d\n",
 						__func__, cmd.error);
-		err = cmd.error;
-		goto cmd_rel_host;
+		return cmd.error;
 	}
 	if (data.error) {
 		dev_err(mmc_dev(card->host), "%s: data error %d\n",
 						__func__, data.error);
-		err = data.error;
-		goto cmd_rel_host;
+		return data.error;
 	}
 
 	/*
@@ -579,18 +571,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	if (idata->ic.postsleep_min_us)
 		usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
 
-	if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) {
-		err = -EFAULT;
-		goto cmd_rel_host;
-	}
-
-	if (!idata->ic.write_flag) {
-		if (copy_to_user((void __user *)(unsigned long) idata->ic.data_ptr,
-						idata->buf, idata->buf_bytes)) {
-			err = -EFAULT;
-			goto cmd_rel_host;
-		}
-	}
+	memcpy(&(idata->ic.response), cmd.resp, sizeof(cmd.resp));
 
 	if (is_rpmb) {
 		/*
@@ -604,24 +585,132 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 					__func__, status, err);
 	}
 
-cmd_rel_host:
+	return err;
+}
+
+static int mmc_blk_ioctl_cmd(struct block_device *bdev,
+			     struct mmc_ioc_cmd __user *ic_ptr)
+{
+	struct mmc_blk_ioc_data *idata;
+	struct mmc_blk_data *md;
+	struct mmc_card *card;
+	int err = 0, ioc_err = 0;
+
+	idata = mmc_blk_ioctl_copy_from_user(ic_ptr);
+	if (IS_ERR(idata))
+		return PTR_ERR(idata);
+
+	md = mmc_blk_get(bdev->bd_disk);
+	if (!md) {
+		err = -EINVAL;
+		goto cmd_err;
+	}
+
+	card = md->queue.card;
+	if (IS_ERR(card)) {
+		err = PTR_ERR(card);
+		goto cmd_done;
+	}
+
+	mmc_get_card(card);
+
+	ioc_err = __mmc_blk_ioctl_cmd(card, md, idata);
+
 	mmc_put_card(card);
 
+	err = mmc_blk_ioctl_copy_to_user(ic_ptr, idata);
+
 cmd_done:
 	mmc_blk_put(md);
 cmd_err:
 	kfree(idata->buf);
 	kfree(idata);
-	return err;
+	return ioc_err ? ioc_err : err;
+}
+
+static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev,
+				   struct mmc_ioc_multi_cmd __user *user)
+{
+	struct mmc_blk_ioc_data **idata = NULL;
+	struct mmc_ioc_cmd __user *cmds = user->cmds;
+	struct mmc_card *card;
+	struct mmc_blk_data *md;
+	int i, err = 0, ioc_err = 0;
+	__u64 num_of_cmds;
+
+	if (copy_from_user(&num_of_cmds, &user->num_of_cmds,
+			   sizeof(num_of_cmds)))
+		return -EFAULT;
+
+	if (num_of_cmds > MMC_IOC_MAX_CMDS)
+		return -EINVAL;
+
+	idata = kcalloc(num_of_cmds, sizeof(*idata), GFP_KERNEL);
+	if (!idata)
+		return -ENOMEM;
+
+	for (i = 0; i < num_of_cmds; i++) {
+		idata[i] = mmc_blk_ioctl_copy_from_user(&cmds[i]);
+		if (IS_ERR(idata[i])) {
+			err = PTR_ERR(idata[i]);
+			num_of_cmds = i;
+			goto cmd_err;
+		}
+	}
+
+	md = mmc_blk_get(bdev->bd_disk);
+	if (!md)
+		goto cmd_err;
+
+	card = md->queue.card;
+	if (IS_ERR(card)) {
+		err = PTR_ERR(card);
+		goto cmd_done;
+	}
+
+	mmc_get_card(card);
+
+	for (i = 0; i < num_of_cmds && !ioc_err; i++)
+		ioc_err = __mmc_blk_ioctl_cmd(card, md, idata[i]);
+
+	mmc_put_card(card);
+
+	/* copy to user if data and response */
+	for (i = 0; i < num_of_cmds && !err; i++)
+		err = mmc_blk_ioctl_copy_to_user(&cmds[i], idata[i]);
+
+cmd_done:
+	mmc_blk_put(md);
+cmd_err:
+	for (i = 0; i < num_of_cmds; i++) {
+		kfree(idata[i]->buf);
+		kfree(idata[i]);
+	}
+	kfree(idata);
+	return ioc_err ? ioc_err : err;
 }
 
 static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode,
 	unsigned int cmd, unsigned long arg)
 {
-	int ret = -EINVAL;
-	if (cmd == MMC_IOC_CMD)
-		ret = mmc_blk_ioctl_cmd(bdev, (struct mmc_ioc_cmd __user *)arg);
-	return ret;
+	/*
+	 * The caller must have CAP_SYS_RAWIO, and must be calling this on the
+	 * whole block device, not on a partition.  This prevents overspray
+	 * between sibling partitions.
+	 */
+	if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains))
+		return -EPERM;
+
+	switch (cmd) {
+	case MMC_IOC_CMD:
+		return mmc_blk_ioctl_cmd(bdev,
+				(struct mmc_ioc_cmd __user *)arg);
+	case MMC_IOC_MULTI_CMD:
+		return mmc_blk_ioctl_multi_cmd(bdev,
+				(struct mmc_ioc_multi_cmd __user *)arg);
+	default:
+		return -EINVAL;
+	}
 }
 
 #ifdef CONFIG_COMPAT
@@ -915,6 +1004,9 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req,
 		if (!err)
 			break;
 
+		/* Re-tune if needed */
+		mmc_retune_recheck(card->host);
+
 		prev_cmd_status_valid = false;
 		pr_err("%s: error %d sending status command, %sing\n",
 		       req->rq_disk->disk_name, err, retry ? "retry" : "abort");
@@ -1206,6 +1298,7 @@ static int mmc_blk_err_check(struct mmc_card *card,
 						    mmc_active);
 	struct mmc_blk_request *brq = &mq_mrq->brq;
 	struct request *req = mq_mrq->req;
+	int need_retune = card->host->need_retune;
 	int ecc_err = 0, gen_err = 0;
 
 	/*
@@ -1273,6 +1366,12 @@ static int mmc_blk_err_check(struct mmc_card *card,
 	}
 
 	if (brq->data.error) {
+		if (need_retune && !brq->retune_retry_done) {
+			pr_info("%s: retrying because a re-tune was needed\n",
+				req->rq_disk->disk_name);
+			brq->retune_retry_done = 1;
+			return MMC_BLK_RETRY;
+		}
 		pr_err("%s: error %d transferring data, sector %u, nr %u, cmd response %#x, card status %#x\n",
 		       req->rq_disk->disk_name, brq->data.error,
 		       (unsigned)blk_rq_pos(req),
@@ -1367,13 +1466,9 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
 
 	/*
 	 * Reliable writes are used to implement Forced Unit Access and
-	 * REQ_META accesses, and are supported only on MMCs.
-	 *
-	 * XXX: this really needs a good explanation of why REQ_META
-	 * is treated special.
+	 * are supported only on MMCs.
 	 */
-	bool do_rel_wr = ((req->cmd_flags & REQ_FUA) ||
-			  (req->cmd_flags & REQ_META)) &&
+	bool do_rel_wr = (req->cmd_flags & REQ_FUA) &&
 		(rq_data_dir(req) == WRITE) &&
 		(md->flags & MMC_BLK_REL_WR);
 
@@ -1832,7 +1927,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 	struct mmc_blk_data *md = mq->data;
 	struct mmc_card *card = md->queue.card;
 	struct mmc_blk_request *brq = &mq->mqrq_cur->brq;
-	int ret = 1, disable_multi = 0, retry = 0, type;
+	int ret = 1, disable_multi = 0, retry = 0, type, retune_retry_done = 0;
 	enum mmc_blk_status status;
 	struct mmc_queue_req *mq_rq;
 	struct request *req = rqc;
@@ -1918,6 +2013,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 				goto start_new_req;
 			break;
 		case MMC_BLK_RETRY:
+			retune_retry_done = brq->retune_retry_done;
 			if (retry++ < 5)
 				break;
 			/* Fall through */
@@ -1980,6 +2076,7 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc)
 				mmc_start_req(card->host,
 						&mq_rq->mmc_active, NULL);
 			}
+			mq_rq->brq.retune_retry_done = retune_retry_done;
 		}
 	} while (ret);
 
@@ -2221,7 +2318,8 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
 		 * The CSD capacity field is in units of read_blkbits.
 		 * set_capacity takes units of 512 bytes.
 		 */
-		size = card->csd.capacity << (card->csd.read_blkbits - 9);
+		size = (typeof(sector_t))card->csd.capacity
+			<< (card->csd.read_blkbits - 9);
 	}
 
 	return mmc_blk_alloc_req(card, &card->dev, size, false, NULL,
@@ -2373,6 +2471,7 @@ force_ro_fail:
 #define CID_MANFID_TOSHIBA	0x11
 #define CID_MANFID_MICRON	0x13
 #define CID_MANFID_SAMSUNG	0x15
+#define CID_MANFID_KINGSTON	0x70
 
 static const struct mmc_fixup blk_fixups[] =
 {
@@ -2395,6 +2494,10 @@ static const struct mmc_fixup blk_fixups[] =
 	 *
 	 * N.B. This doesn't affect SD cards.
 	 */
+	MMC_FIXUP("SDMB-32", CID_MANFID_SANDISK, CID_OEMID_ANY, add_quirk_mmc,
+		  MMC_QUIRK_BLK_NO_CMD23),
+	MMC_FIXUP("SDM032", CID_MANFID_SANDISK, CID_OEMID_ANY, add_quirk_mmc,
+		  MMC_QUIRK_BLK_NO_CMD23),
 	MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_BLK_NO_CMD23),
 	MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
@@ -2431,6 +2534,15 @@ static const struct mmc_fixup blk_fixups[] =
 	MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
 
+	/*
+	 *  On Some Kingston eMMCs, performing trim can result in
+	 *  unrecoverable data conrruption occasionally due to a firmware bug.
+	 */
+	MMC_FIXUP("V10008", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
+		  MMC_QUIRK_TRIM_BROKEN),
+	MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
+		  MMC_QUIRK_TRIM_BROKEN),
+
 	END_FIXUP
 };