diff options
Diffstat (limited to 'drivers/usb/storage')
| -rw-r--r-- | drivers/usb/storage/isd200.c | 4 | ||||
| -rw-r--r-- | drivers/usb/storage/transport.c | 2 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.c | 15 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.h | 3 |
4 files changed, 8 insertions, 16 deletions
diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c index fdba2f69d4c9..e9cbc1467f76 100644 --- a/drivers/usb/storage/isd200.c +++ b/drivers/usb/storage/isd200.c @@ -490,13 +490,13 @@ static int isd200_action( struct us_data *us, int action, void* pointer, int value ) { union ata_cdb ata; - struct scsi_device srb_dev; + /* static to prevent this large struct being placed on the valuable stack */ + static struct scsi_device srb_dev; struct isd200_info *info = (struct isd200_info *)us->extra; struct scsi_cmnd *srb = &info->srb; int status; memset(&ata, 0, sizeof(ata)); - memset(&srb_dev, 0, sizeof(srb_dev)); srb->cmnd = info->cmnd; srb->device = &srb_dev; ++srb->serial_number; diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index f253edec3bb8..44716427c51c 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -147,11 +147,9 @@ static int usb_stor_msg_common(struct us_data *us, int timeout) * hasn't been mapped for DMA. Yes, this is clunky, but it's * easier than always having the caller tell us whether the * transfer buffer has already been mapped. */ - us->current_urb->transfer_flags = URB_NO_SETUP_DMA_MAP; if (us->current_urb->transfer_buffer == us->iobuf) us->current_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; us->current_urb->transfer_dma = us->iobuf_dma; - us->current_urb->setup_dma = us->cr_dma; /* submit the URB */ status = usb_submit_urb(us->current_urb, GFP_NOIO); diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index bbeeb92a2131..c54a370c76c5 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -407,9 +407,8 @@ static int associate_dev(struct us_data *us, struct usb_interface *intf) /* Store our private data in the interface */ usb_set_intfdata(intf, us); - /* Allocate the device-related DMA-mapped buffers */ - us->cr = usb_buffer_alloc(us->pusb_dev, sizeof(*us->cr), - GFP_KERNEL, &us->cr_dma); + /* Allocate the control/setup and DMA-mapped buffers */ + us->cr = kmalloc(sizeof(*us->cr), GFP_KERNEL); if (!us->cr) { US_DEBUGP("usb_ctrlrequest allocation failed\n"); return -ENOMEM; @@ -757,13 +756,9 @@ static void dissociate_dev(struct us_data *us) { US_DEBUGP("-- %s\n", __func__); - /* Free the device-related DMA-mapped buffers */ - if (us->cr) - usb_buffer_free(us->pusb_dev, sizeof(*us->cr), us->cr, - us->cr_dma); - if (us->iobuf) - usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, - us->iobuf_dma); + /* Free the buffers */ + kfree(us->cr); + usb_buffer_free(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); /* Remove our private data from the interface */ usb_set_intfdata(us->pusb_intf, NULL); diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h index 69717134231b..89d3bfff98df 100644 --- a/drivers/usb/storage/usb.h +++ b/drivers/usb/storage/usb.h @@ -139,8 +139,7 @@ struct us_data { struct usb_ctrlrequest *cr; /* control requests */ struct usb_sg_request current_sg; /* scatter-gather req. */ unsigned char *iobuf; /* I/O buffer */ - dma_addr_t cr_dma; /* buffer DMA addresses */ - dma_addr_t iobuf_dma; + dma_addr_t iobuf_dma; /* buffer DMA addresses */ struct task_struct *ctl_thread; /* the control thread */ /* mutual exclusion and synchronization structures */ |