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USB: OHCI: fix bugs in debug routines 

The debug routine fill_async_buffer() in ohci-hcd is buggy: It never
produces any output because it forgets to initialize the output buffer
size.  Also, the debug routine ohci_dump() has an unused argument.

This patch adds the correct initialization and removes the unused
argument.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2014-07-17 16:32:26 -04:00 committed by Greg Kroah-Hartman
parent 6f65126c76
commit 256dbcd80f
2 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/usb/host/ohci-dbg.c
View File

@ -236,7 +236,7 @@ ohci_dump_roothub (
}
}
static void ohci_dump (struct ohci_hcd *controller, int verbose)
static void ohci_dump(struct ohci_hcd *controller)
{
ohci_dbg (controller, "OHCI controller state\n");
@ -464,15 +464,16 @@ show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed)
static ssize_t fill_async_buffer(struct debug_buffer *buf)
{
struct ohci_hcd *ohci;
size_t temp;
size_t temp, size;
unsigned long flags;
ohci = buf->ohci;
size = PAGE_SIZE;
/* display control and bulk lists together, for simplicity */
spin_lock_irqsave (&ohci->lock, flags);
temp = show_list(ohci, buf->page, buf->count, ohci->ed_controltail);
temp += show_list(ohci, buf->page + temp, buf->count - temp,
temp = show_list(ohci, buf->page, size, ohci->ed_controltail);
temp += show_list(ohci, buf->page + temp, size - temp,
ohci->ed_bulktail);
spin_unlock_irqrestore (&ohci->lock, flags);

10
drivers/usb/host/ohci-hcd.c
View File

@ -76,8 +76,8 @@ static const char hcd_name [] = "ohci_hcd";
#include "ohci.h"
#include "pci-quirks.h"
static void ohci_dump (struct ohci_hcd *ohci, int verbose);
static void ohci_stop (struct usb_hcd *hcd);
static void ohci_dump(struct ohci_hcd *ohci);
static void ohci_stop(struct usb_hcd *hcd);
#include "ohci-hub.c"
#include "ohci-dbg.c"
@ -770,7 +770,7 @@ retry:
ohci->ed_to_check = NULL;
}
ohci_dump (ohci, 1);
ohci_dump(ohci);
return 0;
}
@ -851,7 +851,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd)
usb_hc_died(hcd);
}
ohci_dump (ohci, 1);
ohci_dump(ohci);
ohci_usb_reset (ohci);
}
@ -951,7 +951,7 @@ static void ohci_stop (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
ohci_dump (ohci, 1);
ohci_dump(ohci);
if (quirk_nec(ohci))
flush_work(&ohci->nec_work);