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authorMilan Svoboda <msvoboda@ra.rockwell.com>2006-06-26 07:19:00 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-27 11:58:52 -0700
commit8a7471aba19dc526978a03bfe2e3c122712b5900 (patch)
treecc78b29c2b0118a805197c8d143188a4a4e1ea8a /drivers/usb/gadget/inode.c
parent07cb7f23d07aa4d197dbeb123eb9719c176190ee (diff)
USB: fix ep_config to return correct value
This patch fixes ep_config to return correct value. Without patch ep_config returns submitted lenght minus 4 on succes. With this patch applied, whole submitted lenght is returned. ep_config parses submitted data and if buffer starts with (int) 1 it is parsed, otherwise error is reported. Problem is that ep_config returns size of buffer minus 4 on success. I think that size of buffer should be returned instead, because there were no problems and all data were processed. Signed-off-by: Milan Svoboda <msvoboda@ra.rockwell.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/inode.c')
-rw-r--r--drivers/usb/gadget/inode.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index da85732fa99..72c88aa94d5 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -741,7 +741,7 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
struct ep_data *data = fd->private_data;
struct usb_ep *ep;
u32 tag;
- int value;
+ int value, length = len;
if ((value = down_interruptible (&data->lock)) < 0)
return value;
@@ -792,7 +792,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
goto fail0;
}
}
- value = len;
spin_lock_irq (&data->dev->lock);
if (data->dev->state == STATE_DEV_UNBOUND) {
@@ -822,8 +821,10 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
data->name);
data->state = STATE_EP_DEFER_ENABLE;
}
- if (value == 0)
+ if (value == 0) {
fd->f_op = &ep_io_operations;
+ value = length;
+ }
gone:
spin_unlock_irq (&data->dev->lock);
if (value < 0) {