On Tue, Aug 24, 2010 at 09:52:36AM -0300, Mauro Carvalho Chehab wrote: > Em 08-08-2010 13:10, Richard Zidlicky escreveu: > > On Wed, Jul 28, 2010 at 12:24:39AM +0200, Jiri Slaby wrote: > > > > sorry for seeing this so late, was flooded with email lately. > > > >> There is a better fix (which fixes the potential NULL dereference): > >> http://lkml.org/lkml/2010/6/7/175 > > > >> Richard, could you address the comments there and resend? > > > > I am running this patch since many weeks (after fixing the compile error obviously). > > Did not implement your beautification suggestion yet, was doing all kinds of experiments > > with IR and had plenty of unrelated issues. > > This patch seems a way better than the previous patch. I've rebased it against > the current tree (and fixed the identation). thanks for looking at it. > The only missing issue on it is the lack of your Signed-off-by. Richard, could you > please send it to us? Signed-off-by: Richard Zidlicky <rz@xxxxxxxxxxxxxx> PS: I will be away for a while. > > --- > drivers/media/dvb/siano/smscoreapi.c | 31 +++++++++++++------------------ > 1 file changed, 13 insertions(+), 18 deletions(-) > > --- patchwork.orig/drivers/media/dvb/siano/smscoreapi.c > +++ patchwork/drivers/media/dvb/siano/smscoreapi.c > @@ -1098,31 +1098,26 @@ EXPORT_SYMBOL_GPL(smscore_onresponse); > * > * @return pointer to descriptor on success, NULL on error. > */ > -struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev) > + > +struct smscore_buffer_t *get_entry(struct smscore_device_t *coredev) > { > struct smscore_buffer_t *cb = NULL; > unsigned long flags; > > - DEFINE_WAIT(wait); > - > spin_lock_irqsave(&coredev->bufferslock, flags); > + if (!list_empty(&coredev->buffers)) { > + cb = (struct smscore_buffer_t *) coredev->buffers.next; > + list_del(&cb->entry); > + } > + spin_unlock_irqrestore(&coredev->bufferslock, flags); > + return cb; > +} > > - /* This function must return a valid buffer, since the buffer list is > - * finite, we check that there is an available buffer, if not, we wait > - * until such buffer become available. > - */ > - > - prepare_to_wait(&coredev->buffer_mng_waitq, &wait, TASK_INTERRUPTIBLE); > - > - if (list_empty(&coredev->buffers)) > - schedule(); > - > - finish_wait(&coredev->buffer_mng_waitq, &wait); > - > - cb = (struct smscore_buffer_t *) coredev->buffers.next; > - list_del(&cb->entry); > +struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev) > +{ > + struct smscore_buffer_t *cb = NULL; > > - spin_unlock_irqrestore(&coredev->bufferslock, flags); > + wait_event(coredev->buffer_mng_waitq, (cb = get_entry(coredev))); > > return cb; > } -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
