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Merge git://git.infradead.org/~dwmw2/mtd-2.6.35

Browse source 
* git://git.infradead.org/~dwmw2/mtd-2.6.35:
  jffs2: update ctime when changing the file's permission by setfacl
  jffs2: Fix NFS race by using insert_inode_locked()
  jffs2: Fix in-core inode leaks on error paths
  mtd: Fix NAND submenu
  mtd/r852: update card detect early.
  mtd/r852: Fixes in case of DMA timeout
  mtd/r852: register IRQ as last step
  drivers/mtd: Use memdup_user
  docbook: make mtd nand module init static
This commit is contained in:
Linus Torvalds 2010-06-07 17:10:06 -07:00
commit 3975d16760
6 changed files with 106 additions and 90 deletions
Download patch file Download diff file Expand all files Collapse all files

11
drivers/mtd/mtdchar.c
View file

@ -404,14 +404,9 @@ static int mtd_do_writeoob(struct file *file, struct mtd_info *mtd,
if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs))
return -EINVAL;
ops.oobbuf = kmalloc(length, GFP_KERNEL);
if (!ops.oobbuf)
return -ENOMEM;
if (copy_from_user(ops.oobbuf, ptr, length)) {
kfree(ops.oobbuf);
return -EFAULT;
}
ops.oobbuf = memdup_user(ptr, length);
if (IS_ERR(ops.oobbuf))
return PTR_ERR(ops.oobbuf);
start &= ~((uint64_t)mtd->oobsize - 1);
ret = mtd->write_oob(mtd, start, &ops);

21
drivers/mtd/nand/Kconfig
View file

@ -1,13 +1,3 @@
menuconfig MTD_NAND
tristate "NAND Device Support"
depends on MTD
select MTD_NAND_IDS
select MTD_NAND_ECC
help
This enables support for accessing all type of NAND flash
devices. For further information see
<http://www.linux-mtd.infradead.org/doc/nand.html>.
config MTD_NAND_ECC
tristate
@ -19,6 +9,17 @@ config MTD_NAND_ECC_SMC
Software ECC according to the Smart Media Specification.
The original Linux implementation had byte 0 and 1 swapped.
menuconfig MTD_NAND
tristate "NAND Device Support"
depends on MTD
select MTD_NAND_IDS
select MTD_NAND_ECC
help
This enables support for accessing all type of NAND flash
devices. For further information see
<http://www.linux-mtd.infradead.org/doc/nand.html>.
if MTD_NAND
config MTD_NAND_VERIFY_WRITE

27
drivers/mtd/nand/r852.c
View file

@ -150,7 +150,6 @@ static void r852_dma_done(struct r852_device *dev, int error)
if (dev->phys_dma_addr && dev->phys_dma_addr != dev->phys_bounce_buffer)
pci_unmap_single(dev->pci_dev, dev->phys_dma_addr, R852_DMA_LEN,
dev->dma_dir ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
complete(&dev->dma_done);
}
/*
@ -182,6 +181,7 @@ static void r852_do_dma(struct r852_device *dev, uint8_t *buf, int do_read)
/* Set dma direction */
dev->dma_dir = do_read;
dev->dma_stage = 1;
INIT_COMPLETION(dev->dma_done);
dbg_verbose("doing dma %s ", do_read ? "read" : "write");
@ -494,6 +494,11 @@ int r852_ecc_correct(struct mtd_info *mtd, uint8_t *dat,
if (dev->card_unstable)
return 0;
if (dev->dma_error) {
dev->dma_error = 0;
return -1;
}
r852_write_reg(dev, R852_CTL, dev->ctlreg | R852_CTL_ECC_ACCESS);
ecc_reg = r852_read_reg_dword(dev, R852_DATALINE);
r852_write_reg(dev, R852_CTL, dev->ctlreg);
@ -707,6 +712,7 @@ void r852_card_detect_work(struct work_struct *work)
container_of(work, struct r852_device, card_detect_work.work);
r852_card_update_present(dev);
r852_update_card_detect(dev);
dev->card_unstable = 0;
/* False alarm */
@ -722,7 +728,6 @@ void r852_card_detect_work(struct work_struct *work)
else
r852_unregister_nand_device(dev);
exit:
/* Update detection logic */
r852_update_card_detect(dev);
}
@ -796,6 +801,7 @@ static irqreturn_t r852_irq(int irq, void *data)
if (dma_status & R852_DMA_IRQ_ERROR) {
dbg("recieved dma error IRQ");
r852_dma_done(dev, -EIO);
complete(&dev->dma_done);
goto out;
}
@ -825,8 +831,10 @@ static irqreturn_t r852_irq(int irq, void *data)
r852_dma_enable(dev);
/* Operation done */
if (dev->dma_stage == 3)
if (dev->dma_stage == 3) {
r852_dma_done(dev, 0);
complete(&dev->dma_done);
}
goto out;
}
@ -940,18 +948,19 @@ int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
r852_dma_test(dev);
dev->irq = pci_dev->irq;
spin_lock_init(&dev->irqlock);
dev->card_detected = 0;
r852_card_update_present(dev);
/*register irq handler*/
error = -ENODEV;
if (request_irq(pci_dev->irq, &r852_irq, IRQF_SHARED,
DRV_NAME, dev))
goto error10;
dev->irq = pci_dev->irq;
spin_lock_init(&dev->irqlock);
/* kick initial present test */
dev->card_detected = 0;
r852_card_update_present(dev);
queue_delayed_work(dev->card_workqueue,
&dev->card_detect_work, 0);
@ -1081,7 +1090,7 @@ int r852_resume(struct device *device)
dev->card_detected ? "added" : "removed");
queue_delayed_work(dev->card_workqueue,
&dev->card_detect_work, 1000);
&dev->card_detect_work, msecs_to_jiffies(1000));
return 0;
}