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zhaoyifeng
2011-07-14 11:30:17 +08:00
parent 48cbdd20c6
commit 168894d423
1 changed files with 6 additions and 6 deletions
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12
fs/block_dev.c
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@@ -1480,7 +1480,7 @@ static const struct address_space_operations def_blk_aops = {
ssize_t mydo_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
{
unsigned long buf_addr = (unsigned long)buf;
if(memcmp(filp->f_mapping->host->i_bdev->bd_disk->disk_name, "mtdblock", 8) == 0 )// kernel mem is usb tran &&(buf_addr >= 0xc0000000)
if((memcmp(filp->f_mapping->host->i_bdev->bd_disk->disk_name, "mtdblock", 8) == 0) &&(buf_addr >= 0xc0000000))// kernel mem is usb tran &&(buf_addr >= 0xc0000000)
{
struct mtd_blktrans_dev *dev;
struct mtd_blktrans_ops *tr;
@@ -1488,10 +1488,10 @@ ssize_t mydo_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *
dev = (filp->f_mapping->host->i_bdev->bd_disk->private_data);
mtd = dev->mtd;
if((buf_addr < 0xc0000000)&&(mtd->name[0]=='u' &&mtd->name[3]=='r' && mtd->name[4]==0)) // user part
/*if((buf_addr < 0xc0000000)&&(mtd->name[0]=='u' &&mtd->name[3]=='r' && mtd->name[4]==0)) // user part
{
return(do_sync_read(filp, buf,len,ppos));
}
}*/
tr = dev->tr;
if (!tr->readsect)
{
@@ -1515,7 +1515,7 @@ ssize_t mydo_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *
ssize_t mydo_sync_write(struct file *filp, const char __user *buf, size_t len, loff_t *ppos)
{
unsigned long buf_addr = (unsigned long)buf;
if(memcmp(filp->f_mapping->host->i_bdev->bd_disk->disk_name, "mtdblock", 8) == 0)// kernel mem is usb tran &&(buf_addr >= 0xc0000000)
if((memcmp(filp->f_mapping->host->i_bdev->bd_disk->disk_name, "mtdblock", 8) == 0) &&(buf_addr >= 0xc0000000))// kernel mem is usb tran &&(buf_addr >= 0xc0000000)
{
struct mtd_blktrans_dev *dev;
struct mtd_blktrans_ops *tr;
@@ -1524,10 +1524,10 @@ ssize_t mydo_sync_write(struct file *filp, const char __user *buf, size_t len, l
dev = (filp->f_mapping->host->i_bdev->bd_disk->private_data);
mtd = dev->mtd;
if((buf_addr < 0xc0000000)&&(mtd->name[0]=='u' &&mtd->name[3]=='r' && mtd->name[4]==0))
/*if((buf_addr < 0xc0000000)&&(mtd->name[0]=='u' &&mtd->name[3]=='r' && mtd->name[4]==0))
{
return(do_sync_write(filp, buf,len,ppos));
}
}*/
tr = dev->tr;