On Fri, 04 May 2007 18:03:22 +0100
Simon Arlott <[email protected]> wrote:
> Since usbatm doesn't set the usb_interface driver data until after calling bind
> and heavy_init, it would be NULL when the sysfs attributes are read. Reading the
> MAC address from atm_dev before atm_dev exists would have been be possible too.
>
> Calling create_device_file in atm_start will avoid this problem, and the data
> is useless until the first status poll runs. However, it must be ready before a
> status poll does a printk on line status change otherwise userspace could react
> before the files exist.
>
> For completeness I've moved remove_device_file to atm_stop so it's not called in
> unbind when it's not needed.
>
This patch is mysteriously mangled.
>
> drivers/usb/atm/cxacru.c | 45 +++++++++++++++++++++++++--------------------
> 1 files changed, 25 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
> index 0b12ace..4ecb4c7 100644
> --- a/drivers/usb/atm/cxacru.c
> +++ b/drivers/usb/atm/cxacru.c
> @@ -618,10 +618,22 @@ static int cxacru_card_status(struct cxacru_data *instance)
> return 0;
> }
>
> +static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
> + struct atm_dev *atm_dev)
> +{
> + struct usb_interface *intf = usbatm_instance->usb_intf;
> +
> + #define CXACRU_DEVICE_REMOVE_FILE(_name) \
> + device_remove_file(&intf->dev, &dev_attr_##_name);
> + CXACRU_ALL_FILES(REMOVE);
> + #undef CXACRU_DEVICE_REMOVE_FILE
> +}
> +
> static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
> struct atm_dev *atm_dev)
> {
See, that "^{" should have been "^ {". Something has gobbled the leading
space.
Anyway, after some futzing around I was able to determine that this patch
is identical to the one I already have. Ho hum.
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