On 14/12/12 11:02, Konstantin Khlebnikov wrote:
> This patch forbids loading vme_pio2 module without specifing "num_bus" parameter.
> Otherwise on module unloading pio2_exit() calls vme_unregister_driver() for not
> registered pio2_driver.
>
Acked-by: Martyn Welch <martyn.welch@xxxxxx>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
> Cc: Martyn Welch <martyn.welch@xxxxxx>
> Cc: Manohar Vanga <manohar.vanga@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: devel@xxxxxxxxxxxxxxxxxxxx
> ---
> drivers/staging/vme/devices/vme_pio2_core.c | 14 ++------------
> 1 file changed, 2 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/staging/vme/devices/vme_pio2_core.c b/drivers/staging/vme/devices/vme_pio2_core.c
> index 0331178..bf73ba2 100644
> --- a/drivers/staging/vme/devices/vme_pio2_core.c
> +++ b/drivers/staging/vme/devices/vme_pio2_core.c
> @@ -162,11 +162,9 @@ static struct vme_driver pio2_driver = {
>
> static int __init pio2_init(void)
> {
> - int retval = 0;
> -
> if (bus_num == 0) {
> pr_err("No cards, skipping registration\n");
> - goto err_nocard;
> + return -ENODEV;
> }
>
> if (bus_num > PIO2_CARDS_MAX) {
> @@ -176,15 +174,7 @@ static int __init pio2_init(void)
> }
>
> /* Register the PIO2 driver */
> - retval = vme_register_driver(&pio2_driver, bus_num);
> - if (retval != 0)
> - goto err_reg;
> -
> - return retval;
> -
> -err_reg:
> -err_nocard:
> - return retval;
> + return vme_register_driver(&pio2_driver, bus_num);
> }
>
> static int pio2_match(struct vme_dev *vdev)
>
--
Martyn Welch (Lead Software Engineer) | Registered in England and Wales
GE Intelligent Platforms | (3828642) at 100 Barbirolli Square
T +44(0)1327322748 | Manchester, M2 3AB
E martyn.welch@xxxxxx | VAT:GB 927559189
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