1 files changed, 29 insertions, 12 deletions

diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 0ceec123ddfd..bee558aed427 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -35,7 +35,9 @@
 #include <linux/usb.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/mm.h>
 #include <linux/irq.h>
+#include <asm/cacheflush.h>
 
 #include "../core/hcd.h"
 #include "r8a66597.h"
@@ -820,6 +822,26 @@ static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
 }
 
+static void r8a66597_urb_done(struct r8a66597 *r8a66597, struct urb *urb,
+                              int status)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
+{
+        if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+                void *ptr;
+
+                for (ptr = urb->transfer_buffer;
+                     ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+                     ptr += PAGE_SIZE)
+                        flush_dcache_page(virt_to_page(ptr));
+        }
+
+        usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
+        spin_unlock(&r8a66597->lock);
+        usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb, status);
+        spin_lock(&r8a66597->lock);
+}
+
 /* this function must be called with interrupt disabled */
 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
 {
@@ -838,15 +860,9 @@ static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
                 list_del(&td->queue);
                 kfree(td);
 
-                if (urb) {
-                        usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
-                                        urb);
+                if (urb)
+                        r8a66597_urb_done(r8a66597, urb, -ENODEV);
 
-                        spin_unlock(&r8a66597->lock);
-                        usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
-                                        -ENODEV);
-                        spin_lock(&r8a66597->lock);
-                }
                 break;
         }
 }
@@ -1006,6 +1022,8 @@ static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
 /* this function must be called with interrupt disabled */
 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
                                         u16 syssts)
+__releases(r8a66597->lock)
+__acquires(r8a66597->lock)
 {
         if (syssts == SE0) {
                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
@@ -1023,7 +1041,9 @@ static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
                         usb_hcd_resume_root_hub(r8a66597_to_hcd(r8a66597));
         }
 
+        spin_unlock(&r8a66597->lock);
         usb_hcd_poll_rh_status(r8a66597_to_hcd(r8a66597));
+        spin_lock(&r8a66597->lock);
 }
 
 /* this function must be called with interrupt disabled */
@@ -1283,10 +1303,7 @@ __releases(r8a66597->lock) __acquires(r8a66597->lock)
                 if (usb_pipeisoc(urb->pipe))
                         urb->start_frame = r8a66597_get_frame(hcd);
 
-                usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
-                spin_unlock(&r8a66597->lock);
-                usb_hcd_giveback_urb(hcd, urb, status);
-                spin_lock(&r8a66597->lock);
+                r8a66597_urb_done(r8a66597, urb, status);
         }
 
         if (restart) {