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| author | Konstantin Khlebnikov <khlebnikov@openvz.org> | 2012-12-14 15:02:44 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-07 13:56:24 -0800 |
| commit | 9349f8af28ea89639b3c97da583d60631ed10398 (patch) | |
| tree | e4556c2aeb97fbcea025f2e1dceaa1f8fe24fc8d | |
| parent | 6102c48bd421074a33e102f2ebda3724e8d275f9 (diff) | |
| download | linux-9349f8af28ea89639b3c97da583d60631ed10398.tar.gz linux-9349f8af28ea89639b3c97da583d60631ed10398.tar.bz2 linux-9349f8af28ea89639b3c97da583d60631ed10398.zip | |
staging: vme_pio2: fix oops on module unloading
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.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Manohar Vanga <manohar.vanga@gmail.com>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/vme/devices/vme_pio2_core.c | 14 |
1 files 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 0331178ca3b3..bf73ba26e88a 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) |