]> pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - drivers/usb/host/r8a66597-hcd.c
Fix ohci-ssb with !CONFIG_PM
[linux-2.6-omap-h63xx.git] / drivers / usb / host / r8a66597-hcd.c
index a7a7070c6e2ac9d9d8c10d815a0c38e3169775ca..ae8ec4474eb801a1a748d3480cbbcb3fed1ddfd8 100644 (file)
 #include <linux/interrupt.h>
 #include <linux/usb.h>
 #include <linux/platform_device.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
+#include <linux/io.h>
+#include <linux/irq.h>
 
 #include "../core/hcd.h"
 #include "r8a66597.h"
@@ -54,16 +52,21 @@ static const char hcd_name[] = "r8a66597_hcd";
 /* module parameters */
 static unsigned short clock = XTAL12;
 module_param(clock, ushort, 0644);
-MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0(default=0)");
+MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
+               "(default=0)");
+
 static unsigned short vif = LDRV;
 module_param(vif, ushort, 0644);
 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
-static unsigned short endian = 0;
+
+static unsigned short endian;
 module_param(endian, ushort, 0644);
-MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)");
+MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
+
 static unsigned short irq_sense = INTL;
 module_param(irq_sense, ushort, 0644);
-MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)");
+MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
+               "(default=32)");
 
 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
 static int r8a66597_get_frame(struct usb_hcd *hcd);
@@ -308,7 +311,7 @@ static int make_r8a66597_device(struct r8a66597 *r8a66597,
        struct r8a66597_device *dev;
        int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
 
-       dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL);
+       dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
        if (dev == NULL)
                return -ENOMEM;
 
@@ -611,33 +614,33 @@ static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
        u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
 
        memset(array, 0, sizeof(array));
-        switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
-        case USB_ENDPOINT_XFER_BULK:
+       switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+       case USB_ENDPOINT_XFER_BULK:
                if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
                        array[i++] = 4;
                else {
                        array[i++] = 3;
                        array[i++] = 5;
                }
-                break;
-        case USB_ENDPOINT_XFER_INT:
+               break;
+       case USB_ENDPOINT_XFER_INT:
                if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
                        array[i++] = 6;
                        array[i++] = 7;
                        array[i++] = 8;
                } else
                        array[i++] = 9;
-                break;
-        case USB_ENDPOINT_XFER_ISOC:
+               break;
+       case USB_ENDPOINT_XFER_ISOC:
                if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
                        array[i++] = 2;
                else
                        array[i++] = 1;
-                break;
-        default:
-                err("Illegal type");
-                return 0;
-        }
+               break;
+       default:
+               err("Illegal type");
+               return 0;
+       }
 
        i = 1;
        min = array[0];
@@ -654,7 +657,7 @@ static u16 get_r8a66597_type(__u8 type)
 {
        u16 r8a66597_type;
 
-       switch(type) {
+       switch (type) {
        case USB_ENDPOINT_XFER_BULK:
                r8a66597_type = R8A66597_BULK;
                break;
@@ -779,10 +782,12 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
                kfree(td);
 
                if (urb) {
-                       urb->status = -ENODEV;
-                       urb->hcpriv = NULL;
+                       usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
+                                       urb);
+
                        spin_unlock(&r8a66597->lock);
-                       usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb);
+                       usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
+                                       -ENODEV);
                        spin_lock(&r8a66597->lock);
                }
                break;
@@ -829,7 +834,7 @@ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
        info.pipenum = get_empty_pipenum(r8a66597, ep);
        info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
        info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
-       info.maxpacket = ep->wMaxPacketSize;
+       info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
        info.type = get_r8a66597_type(ep->bmAttributes
                                      & USB_ENDPOINT_XFERTYPE_MASK);
        info.bufnum = get_bufnum(info.pipenum);
@@ -874,7 +879,7 @@ static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
 {
        r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
                                         | (1 << USB_PORT_FEAT_C_CONNECTION);
-       r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port));
+       r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
        r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
 }
 
@@ -917,10 +922,10 @@ static void prepare_setup_packet(struct r8a66597 *r8a66597,
 
        r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
                       DCPMAXP);
-       r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1);
+       r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
 
        for (i = 0; i < 4; i++) {
-               r8a66597_write(r8a66597, p[i], setup_addr);
+               r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
                setup_addr += 2;
        }
        r8a66597_write(r8a66597, SUREQ, DCPCTR);
@@ -948,19 +953,18 @@ static void prepare_packet_read(struct r8a66597 *r8a66597,
                        pipe_irq_disable(r8a66597, td->pipenum);
                        pipe_setting(r8a66597, td);
                        pipe_stop(r8a66597, td->pipe);
-                       r8a66597_write(r8a66597, (u16)~(1 << td->pipenum),
-                                      BRDYSTS);
+                       r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
 
                        if (td->pipe->pipetre) {
                                r8a66597_write(r8a66597, TRCLR,
-                                               td->pipe->pipetre);
+                                               td->pipe->pipetre);
                                r8a66597_write(r8a66597,
-                                              (urb->transfer_buffer_length
-                                              + td->maxpacket - 1)
-                                              / td->maxpacket,
-                                              td->pipe->pipetrn);
+                                               (urb->transfer_buffer_length
+                                               + td->maxpacket - 1)
+                                               / td->maxpacket,
+                                               td->pipe->pipetrn);
                                r8a66597_bset(r8a66597, TRENB,
-                                             td->pipe->pipetre);
+                                               td->pipe->pipetre);
                        }
 
                        pipe_start(r8a66597, td->pipe);
@@ -991,7 +995,7 @@ static void prepare_packet_write(struct r8a66597 *r8a66597,
                if (td->pipe->pipetre)
                        r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
        }
-       r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS);
+       r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
 
        fifo_change_from_pipe(r8a66597, td->pipe);
        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
@@ -1009,27 +1013,36 @@ static void prepare_status_packet(struct r8a66597 *r8a66597,
        struct urb *urb = td->urb;
 
        r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
+       pipe_stop(r8a66597, td->pipe);
 
        if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
                r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
                r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
-               r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR);
-               r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
+               r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
+               r8a66597_write(r8a66597, BCLR, CFIFOCTR);
+               r8a66597_write(r8a66597, BVAL, CFIFOCTR);
                enable_irq_empty(r8a66597, 0);
        } else {
                r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
                r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
                r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
                r8a66597_write(r8a66597, BCLR, CFIFOCTR);
-               r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS);
-               r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
                enable_irq_ready(r8a66597, 0);
        }
        enable_irq_nrdy(r8a66597, 0);
        pipe_start(r8a66597, td->pipe);
 }
 
+static int is_set_address(unsigned char *setup_packet)
+{
+       if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
+                       setup_packet[1] == USB_REQ_SET_ADDRESS)
+               return 1;
+       else
+               return 0;
+}
+
 /* this function must be called with interrupt disabled */
 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 {
@@ -1037,7 +1050,7 @@ static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 
        switch (td->type) {
        case USB_PID_SETUP:
-               if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
+               if (is_set_address(td->urb->setup_packet)) {
                        td->set_address = 1;
                        td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
                                                                     td->urb);
@@ -1104,8 +1117,9 @@ static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
 }
 
 /* this function must be called with interrupt disabled */
-static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
-                u16 pipenum, struct urb *urb)
+static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
+               u16 pipenum, struct urb *urb, int status)
+__releases(r8a66597->lock) __acquires(r8a66597->lock)
 {
        int restart = 0;
        struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
@@ -1113,7 +1127,7 @@ static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
        r8a66597->timeout_map &= ~(1 << pipenum);
 
        if (likely(td)) {
-               if (td->set_address && urb->status != 0)
+               if (td->set_address && (status != 0 || urb->unlinked))
                        r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
 
                pipe_toggle_save(r8a66597, td->pipe, urb);
@@ -1128,9 +1142,9 @@ static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
                if (usb_pipeisoc(urb->pipe))
                        urb->start_frame = r8a66597_get_frame(hcd);
 
-               urb->hcpriv = NULL;
+               usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
                spin_unlock(&r8a66597->lock);
-               usb_hcd_giveback_urb(hcd, urb);
+               usb_hcd_giveback_urb(hcd, urb, status);
                spin_lock(&r8a66597->lock);
        }
 
@@ -1144,14 +1158,6 @@ static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
        }
 }
 
-/* this function must be called with interrupt disabled */
-static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
-                          u16 pipenum, struct urb *urb)
-__releases(r8a66597->lock) __acquires(r8a66597->lock)
-{
-       done(r8a66597, td, pipenum, urb);
-}
-
 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
 {
        u16 tmp;
@@ -1160,6 +1166,7 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
        struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
        struct urb *urb;
        int finish = 0;
+       int status = 0;
 
        if (unlikely(!td))
                return;
@@ -1168,17 +1175,15 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
        fifo_change_from_pipe(r8a66597, td->pipe);
        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
        if (unlikely((tmp & FRDY) == 0)) {
-               urb->status = -EPIPE;
                pipe_stop(r8a66597, td->pipe);
                pipe_irq_disable(r8a66597, pipenum);
                err("in fifo not ready (%d)", pipenum);
-               finish_request(r8a66597, td, pipenum, td->urb);
+               finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
                return;
        }
 
        /* prepare parameters */
        rcv_len = tmp & DTLN;
-       bufsize = td->maxpacket;
        if (usb_pipeisoc(urb->pipe)) {
                buf = (u16 *)(urb->transfer_buffer +
                                urb->iso_frame_desc[td->iso_cnt].offset);
@@ -1187,29 +1192,31 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
                buf = (void *)urb->transfer_buffer + urb->actual_length;
                urb_len = urb->transfer_buffer_length - urb->actual_length;
        }
-       if (rcv_len < bufsize)
-               size = min(rcv_len, urb_len);
-       else
-               size = min(bufsize, urb_len);
+       bufsize = min(urb_len, (int) td->maxpacket);
+       if (rcv_len <= bufsize) {
+               size = rcv_len;
+       } else {
+               size = bufsize;
+               status = -EOVERFLOW;
+               finish = 1;
+       }
 
        /* update parameters */
        urb->actual_length += size;
        if (rcv_len == 0)
                td->zero_packet = 1;
-       if ((size % td->maxpacket) > 0) {
+       if (rcv_len < bufsize) {
                td->short_packet = 1;
-               if (urb->transfer_buffer_length != urb->actual_length &&
-                   urb->transfer_flags & URB_SHORT_NOT_OK)
-                       td->urb->status = -EREMOTEIO;
        }
        if (usb_pipeisoc(urb->pipe)) {
                urb->iso_frame_desc[td->iso_cnt].actual_length = size;
-               urb->iso_frame_desc[td->iso_cnt].status = 0;
+               urb->iso_frame_desc[td->iso_cnt].status = status;
                td->iso_cnt++;
+               finish = 0;
        }
 
        /* check transfer finish */
-       if (check_transfer_finish(td, urb)) {
+       if (finish || check_transfer_finish(td, urb)) {
                pipe_stop(r8a66597, td->pipe);
                pipe_irq_disable(r8a66597, pipenum);
                finish = 1;
@@ -1224,11 +1231,8 @@ static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
                                           buf, size);
        }
 
-       if (finish && pipenum != 0) {
-               if (td->urb->status == -EINPROGRESS)
-                       td->urb->status = 0;
-               finish_request(r8a66597, td, pipenum, urb);
-       }
+       if (finish && pipenum != 0)
+               finish_request(r8a66597, td, pipenum, urb, status);
 }
 
 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
@@ -1246,11 +1250,10 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
        fifo_change_from_pipe(r8a66597, td->pipe);
        tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
        if (unlikely((tmp & FRDY) == 0)) {
-               urb->status = -EPIPE;
                pipe_stop(r8a66597, td->pipe);
                pipe_irq_disable(r8a66597, pipenum);
                err("out write fifo not ready. (%d)", pipenum);
-               finish_request(r8a66597, td, pipenum, td->urb);
+               finish_request(r8a66597, td, pipenum, urb, -EPIPE);
                return;
        }
 
@@ -1269,7 +1272,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
 
        /* write fifo */
        if (pipenum > 0)
-               r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS);
+               r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
        if (urb->transfer_buffer) {
                r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
                if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
@@ -1295,7 +1298,7 @@ static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
 }
 
 
-static void check_next_phase(struct r8a66597 *r8a66597)
+static void check_next_phase(struct r8a66597 *r8a66597, int status)
 {
        struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
        struct urb *urb;
@@ -1308,49 +1311,41 @@ static void check_next_phase(struct r8a66597 *r8a66597)
        switch (td->type) {
        case USB_PID_IN:
        case USB_PID_OUT:
-               if (urb->status != -EINPROGRESS) {
-                       finish = 1;
-                       break;
-               }
                if (check_transfer_finish(td, urb))
                        td->type = USB_PID_ACK;
                break;
        case USB_PID_SETUP:
-               if (urb->status != -EINPROGRESS)
-                       finish = 1;
-               else if (urb->transfer_buffer_length == urb->actual_length) {
+               if (urb->transfer_buffer_length == urb->actual_length)
                        td->type = USB_PID_ACK;
-                       urb->status = 0;
-               } else if (usb_pipeout(urb->pipe))
+               else if (usb_pipeout(urb->pipe))
                        td->type = USB_PID_OUT;
                else
                        td->type = USB_PID_IN;
                break;
        case USB_PID_ACK:
                finish = 1;
-               if (urb->status == -EINPROGRESS)
-                       urb->status = 0;
                break;
        }
 
-       if (finish)
-               finish_request(r8a66597, td, 0, urb);
+       if (finish || status != 0 || urb->unlinked)
+               finish_request(r8a66597, td, 0, urb, status);
        else
                start_transfer(r8a66597, td);
 }
 
-static void set_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
+static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
 {
        struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
 
-       if (td && td->urb) {
+       if (td) {
                u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
 
                if (pid == PID_NAK)
-                       td->urb->status = -ECONNRESET;
+                       return -ECONNRESET;
                else
-                       td->urb->status = -EPIPE;
+                       return -EPIPE;
        }
+       return 0;
 }
 
 static void irq_pipe_ready(struct r8a66597 *r8a66597)
@@ -1362,14 +1357,14 @@ static void irq_pipe_ready(struct r8a66597 *r8a66597)
 
        mask = r8a66597_read(r8a66597, BRDYSTS)
               & r8a66597_read(r8a66597, BRDYENB);
-       r8a66597_write(r8a66597, (u16)~mask, BRDYSTS);
+       r8a66597_write(r8a66597, ~mask, BRDYSTS);
        if (mask & BRDY0) {
                td = r8a66597_get_td(r8a66597, 0);
                if (td && td->type == USB_PID_IN)
                        packet_read(r8a66597, 0);
                else
                        pipe_irq_disable(r8a66597, 0);
-               check_next_phase(r8a66597);
+               check_next_phase(r8a66597, 0);
        }
 
        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
@@ -1397,13 +1392,13 @@ static void irq_pipe_empty(struct r8a66597 *r8a66597)
 
        mask = r8a66597_read(r8a66597, BEMPSTS)
               & r8a66597_read(r8a66597, BEMPENB);
-       r8a66597_write(r8a66597, (u16)~mask, BEMPSTS);
+       r8a66597_write(r8a66597, ~mask, BEMPSTS);
        if (mask & BEMP0) {
                cfifo_change(r8a66597, 0);
                td = r8a66597_get_td(r8a66597, 0);
                if (td && td->type != USB_PID_OUT)
                        disable_irq_empty(r8a66597, 0);
-               check_next_phase(r8a66597);
+               check_next_phase(r8a66597, 0);
        }
 
        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
@@ -1418,9 +1413,8 @@ static void irq_pipe_empty(struct r8a66597 *r8a66597)
                        if ((tmp & INBUFM) == 0) {
                                disable_irq_empty(r8a66597, pipenum);
                                pipe_irq_disable(r8a66597, pipenum);
-                               if (td->urb->status == -EINPROGRESS)
-                                       td->urb->status = 0;
-                               finish_request(r8a66597, td, pipenum, td->urb);
+                               finish_request(r8a66597, td, pipenum, td->urb,
+                                               0);
                        }
                }
        }
@@ -1431,15 +1425,16 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
        u16 check;
        u16 pipenum;
        u16 mask;
+       int status;
 
        mask = r8a66597_read(r8a66597, NRDYSTS)
               & r8a66597_read(r8a66597, NRDYENB);
-       r8a66597_write(r8a66597, (u16)~mask, NRDYSTS);
+       r8a66597_write(r8a66597, ~mask, NRDYSTS);
        if (mask & NRDY0) {
                cfifo_change(r8a66597, 0);
-               set_urb_error(r8a66597, 0);
+               status = get_urb_error(r8a66597, 0);
                pipe_irq_disable(r8a66597, 0);
-               check_next_phase(r8a66597);
+               check_next_phase(r8a66597, status);
        }
 
        for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
@@ -1450,10 +1445,10 @@ static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
                        if (unlikely(!td))
                                continue;
 
-                       set_urb_error(r8a66597, pipenum);
+                       status = get_urb_error(r8a66597, pipenum);
                        pipe_irq_disable(r8a66597, pipenum);
                        pipe_stop(r8a66597, td->pipe);
-                       finish_request(r8a66597, td, pipenum, td->urb);
+                       finish_request(r8a66597, td, pipenum, td->urb, status);
                }
        }
 }
@@ -1473,6 +1468,7 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
        u16 intsts0, intsts1, intsts2;
        u16 intenb0, intenb1, intenb2;
        u16 mask0, mask1, mask2;
+       int status;
 
        spin_lock(&r8a66597->lock);
 
@@ -1488,14 +1484,14 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
        mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
        if (mask2) {
                if (mask2 & ATTCH) {
-                       r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2);
+                       r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
                        r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
 
                        /* start usb bus sampling */
                        start_root_hub_sampling(r8a66597, 1);
                }
                if (mask2 & DTCH) {
-                       r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2);
+                       r8a66597_write(r8a66597, ~DTCH, INTSTS2);
                        r8a66597_bclr(r8a66597, DTCHE, INTENB2);
                        r8a66597_usb_disconnect(r8a66597, 1);
                }
@@ -1503,25 +1499,25 @@ static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
 
        if (mask1) {
                if (mask1 & ATTCH) {
-                       r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1);
+                       r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
                        r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
 
                        /* start usb bus sampling */
                        start_root_hub_sampling(r8a66597, 0);
                }
                if (mask1 & DTCH) {
-                       r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1);
+                       r8a66597_write(r8a66597, ~DTCH, INTSTS1);
                        r8a66597_bclr(r8a66597, DTCHE, INTENB1);
                        r8a66597_usb_disconnect(r8a66597, 0);
                }
                if (mask1 & SIGN) {
-                       r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1);
-                       set_urb_error(r8a66597, 0);
-                       check_next_phase(r8a66597);
+                       r8a66597_write(r8a66597, ~SIGN, INTSTS1);
+                       status = get_urb_error(r8a66597, 0);
+                       check_next_phase(r8a66597, status);
                }
                if (mask1 & SACK) {
-                       r8a66597_write(r8a66597, (u16)~SACK, INTSTS1);
-                       check_next_phase(r8a66597);
+                       r8a66597_write(r8a66597, ~SACK, INTSTS1);
+                       check_next_phase(r8a66597, 0);
                }
        }
        if (mask0) {
@@ -1663,13 +1659,9 @@ static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
 static int r8a66597_start(struct usb_hcd *hcd)
 {
        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
-       int ret;
 
        hcd->state = HC_STATE_RUNNING;
-       if ((ret = enable_controller(r8a66597)) < 0)
-               return ret;
-
-       return 0;
+       return enable_controller(r8a66597);
 }
 
 static void r8a66597_stop(struct usb_hcd *hcd)
@@ -1696,13 +1688,12 @@ static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
 
 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
                                            struct urb *urb,
-                                           struct usb_host_endpoint *hep,
-                                           gfp_t mem_flags)
+                                           struct usb_host_endpoint *hep)
 {
        struct r8a66597_td *td;
        u16 pipenum;
 
-       td = kzalloc(sizeof(struct r8a66597_td), mem_flags);
+       td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
        if (td == NULL)
                return NULL;
 
@@ -1725,23 +1716,28 @@ static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
 }
 
 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
-                               struct usb_host_endpoint *hep,
                                struct urb *urb,
                                gfp_t mem_flags)
 {
+       struct usb_host_endpoint *hep = urb->ep;
        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
        struct r8a66597_td *td = NULL;
-       int ret = 0, request = 0;
+       int ret, request = 0;
        unsigned long flags;
 
        spin_lock_irqsave(&r8a66597->lock, flags);
        if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
                ret = -ENODEV;
-               goto error;
+               goto error_not_linked;
        }
 
+       ret = usb_hcd_link_urb_to_ep(hcd, urb);
+       if (ret)
+               goto error_not_linked;
+
        if (!hep->hcpriv) {
-               hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags);
+               hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
+                               GFP_ATOMIC);
                if (!hep->hcpriv) {
                        ret = -ENOMEM;
                        goto error;
@@ -1755,7 +1751,7 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
                init_pipe_config(r8a66597, urb);
 
        set_address_zero(r8a66597, urb);
-       td = r8a66597_make_td(r8a66597, urb, hep, mem_flags);
+       td = r8a66597_make_td(r8a66597, urb, hep);
        if (td == NULL) {
                ret = -ENOMEM;
                goto error;
@@ -1763,15 +1759,7 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
        if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
                request = 1;
        list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
-
-       spin_lock(&urb->lock);
-       if (urb->status != -EINPROGRESS) {
-               spin_unlock(&urb->lock);
-               ret = -EPIPE;
-               goto error;
-       }
        urb->hcpriv = td;
-       spin_unlock(&urb->lock);
 
        if (request) {
                ret = start_transfer(r8a66597, td);
@@ -1783,26 +1771,36 @@ static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
                set_td_timer(r8a66597, td);
 
 error:
+       if (ret)
+               usb_hcd_unlink_urb_from_ep(hcd, urb);
+error_not_linked:
        spin_unlock_irqrestore(&r8a66597->lock, flags);
        return ret;
 }
 
-static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
+               int status)
 {
        struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
        struct r8a66597_td *td;
        unsigned long flags;
+       int rc;
 
        spin_lock_irqsave(&r8a66597->lock, flags);
+       rc = usb_hcd_check_unlink_urb(hcd, urb, status);
+       if (rc)
+               goto done;
+
        if (urb->hcpriv) {
                td = urb->hcpriv;
                pipe_stop(r8a66597, td->pipe);
                pipe_irq_disable(r8a66597, td->pipenum);
                disable_irq_empty(r8a66597, td->pipenum);
-               done(r8a66597, td, td->pipenum, urb);
+               finish_request(r8a66597, td, td->pipenum, urb, status);
        }
+ done:
        spin_unlock_irqrestore(&r8a66597->lock, flags);
-       return 0;
+       return rc;
 }
 
 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
@@ -1832,7 +1830,7 @@ static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
        td = r8a66597_get_td(r8a66597, pipenum);
        if (td)
                urb = td->urb;
-       done(r8a66597, td, pipenum, urb);
+       finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
        kfree(hep->hcpriv);
        hep->hcpriv = NULL;
        spin_unlock_irqrestore(&r8a66597->lock, flags);
@@ -2029,7 +2027,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
        case GetPortStatus:
                if (wIndex > R8A66597_MAX_ROOT_HUB)
                        goto error;
-               *(u32 *)buf = rh->port;
+               *(u32 *)buf = cpu_to_le32(rh->port);
                break;
        case SetPortFeature:
                if (wIndex > R8A66597_MAX_ROOT_HUB)
@@ -2128,8 +2126,8 @@ static int __init_or_module r8a66597_remove(struct platform_device *pdev)
        struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
 
        del_timer_sync(&r8a66597->rh_timer);
-       iounmap((void *)r8a66597->reg);
        usb_remove_hcd(hcd);
+       iounmap((void *)r8a66597->reg);
        usb_put_hcd(hcd);
        return 0;
 }
@@ -2210,8 +2208,6 @@ static int __init r8a66597_probe(struct platform_device *pdev)
 clean_up:
        if (reg)
                iounmap(reg);
-       if (res)
-               release_mem_region(res->start, 1);
 
        return ret;
 }