From: Anton Vorontsov <[email protected]> After kfifo rework it's no longer possible to reliably know if kfifo is usable, since after kfifo_free(), kfifo_initialized() would still return true. The correct behaviour is needed for at least FHCI USB driver.
This patch fixes the issue by resetting the kfifo to zero values (the same approach is used in kfifo_alloc() if allocation failed). Signed-off-by: Anton Vorontsov <[email protected]> Acked-by: Stefani Seibold <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> kernel/kfifo.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) --- http://git.linuxtv.org/v4l-dvb.git?a=commitdiff;h=1a02d59aba9b61b820517fb135086471c065b573 diff --git a/kernel/kfifo.c b/kernel/kfifo.c index 498cabb..559fb55 100644 --- a/kernel/kfifo.c +++ b/kernel/kfifo.c @@ -97,6 +97,7 @@ EXPORT_SYMBOL(kfifo_alloc); void kfifo_free(struct kfifo *fifo) { kfree(fifo->buffer); + _kfifo_init(fifo, NULL, 0); } EXPORT_SYMBOL(kfifo_free); _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
