diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/usb.c | 6 | ||||
| -rw-r--r-- | common/usb_storage.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/common/usb.c b/common/usb.c index 349e838f1d..686f09a77d 100644 --- a/common/usb.c +++ b/common/usb.c @@ -172,6 +172,12 @@ int usb_detect_change(void) return change; } +/* Lock or unlock async schedule on the controller */ +__weak int usb_lock_async(struct usb_device *dev, int lock) +{ + return 0; +} + /* * disables the asynch behaviour of the control message. This is used for data * transfers that uses the exclusiv access to the control and bulk messages. diff --git a/common/usb_storage.c b/common/usb_storage.c index 097b6729c1..b291ac55d1 100644 --- a/common/usb_storage.c +++ b/common/usb_storage.c @@ -1157,6 +1157,7 @@ static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr, ss = (struct us_data *)udev->privptr; usb_disable_asynch(1); /* asynch transfer not allowed */ + usb_lock_async(udev, 1); srb->lun = block_dev->lun; buf_addr = (uintptr_t)buffer; start = blknr; @@ -1195,6 +1196,7 @@ retry_it: debug("usb_read: end startblk " LBAF ", blccnt %x buffer %lx\n", start, smallblks, buf_addr); + usb_lock_async(udev, 0); usb_disable_asynch(0); /* asynch transfer allowed */ if (blkcnt >= ss->max_xfer_blk) debug("\n"); @@ -1239,6 +1241,7 @@ static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr, ss = (struct us_data *)udev->privptr; usb_disable_asynch(1); /* asynch transfer not allowed */ + usb_lock_async(udev, 1); srb->lun = block_dev->lun; buf_addr = (uintptr_t)buffer; @@ -1280,6 +1283,7 @@ retry_it: debug("usb_write: end startblk " LBAF ", blccnt %x buffer %lx\n", start, smallblks, buf_addr); + usb_lock_async(udev, 0); usb_disable_asynch(0); /* asynch transfer allowed */ if (blkcnt >= ss->max_xfer_blk) debug("\n"); |