On Thu, 14 Nov 2013 [email protected] wrote:
> From: Oliver Neukum <[email protected]>
>
> To allow a full switch to dynamic debugging make the
> debug parameter conditional on defined(DEBUF) || defined(DYNAMIC_DEBUG)
>
> Signed-off-by: Oliver Neukum <[email protected]>
> ---
> drivers/usb/host/uhci-hcd.c | 48
> +++++++++++++++++++++++++++------------------
> 1 file changed, 29 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
> index 4a86b63..e3b1a4c 100644
> --- a/drivers/usb/host/uhci-hcd.c
> +++ b/drivers/usb/host/uhci-hcd.c
> @@ -69,18 +69,21 @@ MODULE_PARM_DESC(ignore_oc, "ignore hardware overcurrent
> indications");
> * show all queues in /sys/kernel/debug/uhci/[pci_addr]
> * debug = 3, show all TDs in URBs when dumping
> */
> -#ifdef DEBUG
> -#define DEBUG_CONFIGURED 1
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> +
> static int debug = 1;
> module_param(debug, int, S_IRUGO | S_IWUSR);
> MODULE_PARM_DESC(debug, "Debug level");
> +static char *errbuf;
>
> #else
> -#define DEBUG_CONFIGURED 0
> -#define debug 0
> +
> +#define debug 0
> +#define errbuf NULL
> +
> #endif
The advantage of keeping the DEBUG_CONFIGURED symbol shows up later...
> @@ -462,12 +465,14 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd)
> if (uhci->rh_state >= UHCI_RH_RUNNING) {
> dev_err(uhci_dev(uhci),
> "host controller halted, very bad!\n");
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> if (debug > 1 && errbuf) {
> /* Print the schedule for debugging */
> uhci_sprint_schedule(uhci, errbuf,
> ERRBUF_LEN - EXTRA_SPACE);
> lprintk(errbuf);
> }
> +#endif
You're going to remove this #if, right?
> @@ -823,8 +827,10 @@ static int uhci_count_ports(struct usb_hcd *hcd)
> if (!(portstatus & 0x0080) || portstatus == 0xffff)
> break;
> }
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> if (debug)
> dev_info(uhci_dev(uhci), "detected %d ports\n", port);
> +#endif
And this one?
> @@ -868,14 +874,14 @@ static int __init uhci_hcd_init(void)
> ignore_oc ? ", overcurrent ignored" : "");
> set_bit(USB_UHCI_LOADED, &usb_hcds_loaded);
>
> - if (DEBUG_CONFIGURED) {
> - errbuf = kmalloc(ERRBUF_LEN, GFP_KERNEL);
> - if (!errbuf)
> - goto errbuf_failed;
> - uhci_debugfs_root = debugfs_create_dir("uhci", usb_debug_root);
> - if (!uhci_debugfs_root)
> - goto debug_failed;
> - }
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> + errbuf = kmalloc(ERRBUF_LEN, GFP_KERNEL);
> + if (!errbuf)
> + goto errbuf_failed;
> +#endif
> + uhci_debugfs_root = debugfs_create_dir("uhci", usb_debug_root);
> + if (!uhci_debugfs_root)
> + goto debug_failed;
If you retain the DEBUG_CONFIGURED symbol then this change isn't
needed.
> @@ -909,9 +915,11 @@ up_failed:
> debugfs_remove(uhci_debugfs_root);
>
> debug_failed:
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> kfree(errbuf);
>
> errbuf_failed:
> +#endif
Likewise, this #if can be replaced with a normal "if" statement.
> @@ -927,7 +935,9 @@ static void __exit uhci_hcd_cleanup(void)
> #endif
> kmem_cache_destroy(uhci_up_cachep);
> debugfs_remove(uhci_debugfs_root);
> +#if defined(DEBUG) || defined(DYNAMIC_DEBUG)
> kfree(errbuf);
> +#endif
And here too.
Alan Stern
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