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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/mtd/nand/diskonchip.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
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>
Diffstat (limited to 'kernel/drivers/mtd/nand/diskonchip.c')
-rw-r--r--kernel/drivers/mtd/nand/diskonchip.c39
1 files changed, 19 insertions, 20 deletions
diff --git a/kernel/drivers/mtd/nand/diskonchip.c b/kernel/drivers/mtd/nand/diskonchip.c
index f68a7bcce..0802158a3 100644
--- a/kernel/drivers/mtd/nand/diskonchip.c
+++ b/kernel/drivers/mtd/nand/diskonchip.c
@@ -24,7 +24,7 @@
#include <linux/rslib.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
@@ -69,6 +69,9 @@ struct doc_priv {
int mh0_page;
int mh1_page;
struct mtd_info *nextdoc;
+
+ /* Handle the last stage of initialization (BBT scan, partitioning) */
+ int (*late_init)(struct mtd_info *mtd);
};
/* This is the syndrome computed by the HW ecc generator upon reading an empty
@@ -1294,14 +1297,11 @@ static int __init nftl_scan_bbt(struct mtd_info *mtd)
this->bbt_md = NULL;
}
- /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set.
- At least as nand_bbt.c is currently written. */
- if ((ret = nand_scan_bbt(mtd, NULL)))
+ ret = this->scan_bbt(mtd);
+ if (ret)
return ret;
- mtd_device_register(mtd, NULL, 0);
- if (!no_autopart)
- mtd_device_register(mtd, parts, numparts);
- return 0;
+
+ return mtd_device_register(mtd, parts, no_autopart ? 0 : numparts);
}
static int __init inftl_scan_bbt(struct mtd_info *mtd)
@@ -1344,10 +1344,10 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd)
this->bbt_md->pattern = "TBB_SYSM";
}
- /* It's safe to set bd=NULL below because NAND_BBT_CREATE is not set.
- At least as nand_bbt.c is currently written. */
- if ((ret = nand_scan_bbt(mtd, NULL)))
+ ret = this->scan_bbt(mtd);
+ if (ret)
return ret;
+
memset((char *)parts, 0, sizeof(parts));
numparts = inftl_partscan(mtd, parts);
/* At least for now, require the INFTL Media Header. We could probably
@@ -1355,10 +1355,7 @@ static int __init inftl_scan_bbt(struct mtd_info *mtd)
autopartitioning, but I want to give it more thought. */
if (!numparts)
return -EIO;
- mtd_device_register(mtd, NULL, 0);
- if (!no_autopart)
- mtd_device_register(mtd, parts, numparts);
- return 0;
+ return mtd_device_register(mtd, parts, no_autopart ? 0 : numparts);
}
static inline int __init doc2000_init(struct mtd_info *mtd)
@@ -1369,7 +1366,7 @@ static inline int __init doc2000_init(struct mtd_info *mtd)
this->read_byte = doc2000_read_byte;
this->write_buf = doc2000_writebuf;
this->read_buf = doc2000_readbuf;
- this->scan_bbt = nftl_scan_bbt;
+ doc->late_init = nftl_scan_bbt;
doc->CDSNControl = CDSN_CTRL_FLASH_IO | CDSN_CTRL_ECC_IO;
doc2000_count_chips(mtd);
@@ -1396,13 +1393,13 @@ static inline int __init doc2001_init(struct mtd_info *mtd)
can have multiple chips. */
doc2000_count_chips(mtd);
mtd->name = "DiskOnChip 2000 (INFTL Model)";
- this->scan_bbt = inftl_scan_bbt;
+ doc->late_init = inftl_scan_bbt;
return (4 * doc->chips_per_floor);
} else {
/* Bog-standard Millennium */
doc->chips_per_floor = 1;
mtd->name = "DiskOnChip Millennium";
- this->scan_bbt = nftl_scan_bbt;
+ doc->late_init = nftl_scan_bbt;
return 1;
}
}
@@ -1415,7 +1412,7 @@ static inline int __init doc2001plus_init(struct mtd_info *mtd)
this->read_byte = doc2001plus_read_byte;
this->write_buf = doc2001plus_writebuf;
this->read_buf = doc2001plus_readbuf;
- this->scan_bbt = inftl_scan_bbt;
+ doc->late_init = inftl_scan_bbt;
this->cmd_ctrl = NULL;
this->select_chip = doc2001plus_select_chip;
this->cmdfunc = doc2001plus_command;
@@ -1591,6 +1588,8 @@ static int __init doc_probe(unsigned long physadr)
nand->ecc.bytes = 6;
nand->ecc.strength = 2;
nand->bbt_options = NAND_BBT_USE_FLASH;
+ /* Skip the automatic BBT scan so we can run it manually */
+ nand->options |= NAND_SKIP_BBTSCAN;
doc->physadr = physadr;
doc->virtadr = virtadr;
@@ -1608,7 +1607,7 @@ static int __init doc_probe(unsigned long physadr)
else
numchips = doc2001_init(mtd);
- if ((ret = nand_scan(mtd, numchips))) {
+ if ((ret = nand_scan(mtd, numchips)) || (ret = doc->late_init(mtd))) {
/* DBB note: i believe nand_release is necessary here, as
buffers may have been allocated in nand_base. Check with
Thomas. FIX ME! */