Messages in this thread | | | Date | Tue, 1 Apr 2014 01:30:56 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | Re: [PATCH] tc: account for device_register() failure |
| |
On Fri, 15 Nov 2013, Levente Kurusa wrote:
> This patch makes the TURBOchannel driver bail out if the call > to device_register() failed. > > Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
This fixes some build warnings:
drivers/tc/tc.c: In function 'tc_bus_add_devices': drivers/tc/tc.c:132: warning: ignoring return value of 'device_register', declared with attribute warn_unused_result drivers/tc/tc.c: In function 'tc_init': drivers/tc/tc.c:151: warning: ignoring return value of 'device_register', declared with attribute warn_unused_result
Levente, thanks for your fix and apologies for the long RTT -- can you please resend your patch to <linux-mips@linux-mips.org> and Ralf so that it'll be pulled via the MIPS tree? I'll post a follow-up update to fix some issues with `tc_init' that I noticed thanks to your change.
> --- > tc.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c > index a8aaf6a..6b3a038 100644 > --- a/drivers/tc/tc.c > +++ b/drivers/tc/tc.c > @@ -129,7 +129,10 @@ static void __init tc_bus_add_devices(struct tc_bus *tbus) > > tc_device_get_irq(tdev); > > - device_register(&tdev->dev); > + if (device_register(&tdev->dev)) { > + put_device(&tdev->dev); > + goto out_err; > + } > list_add_tail(&tdev->node, &tbus->devices); > > out_err: > @@ -148,7 +151,10 @@ static int __init tc_init(void) > > INIT_LIST_HEAD(&tc_bus.devices); > dev_set_name(&tc_bus.dev, "tc"); > - device_register(&tc_bus.dev); > + if (device_register(&tc_bus.dev)) { > + put_device(&tc_bus.dev); > + return 0; > + } > > if (tc_bus.info.slot_size) { > unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000; >
Maciej
| |