This is a note to let you know that I've just added the patch titled

fpga: region: release of_parse_phandle nodes after use

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-next branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will also be merged in the next major kernel release during the merge window.

If you have any questions about this process, please let me know.

From 0f5eb1545907edeea7672a9c1652c4231150ff22 Mon Sep 17 00:00:00 2001

From: Ian Abbott abbotti@mev.co.uk Date: Wed, 15 Nov 2017 16:33:12 -0600 Subject: fpga: region: release of_parse_phandle nodes after use

Both fpga_region_get_manager() and fpga_region_get_bridges() call of_parse_phandle(), but nothing calls of_node_put() on the returned struct device_node pointers. Make sure to do that to stop their reference counters getting out of whack.

Fixes: 0fa20cdfcc1f ("fpga: fpga-region: device tree control for FPGA") Cc: stable@vger.kernel.org # 4.10+ Signed-off-by: Ian Abbott abbotti@mev.co.uk Signed-off-by: Alan Tull atull@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/fpga/of-fpga-region.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c index c6b21194dcbc..119ff75522f1 100644 --- a/drivers/fpga/of-fpga-region.c +++ b/drivers/fpga/of-fpga-region.c @@ -73,6 +73,7 @@ static struct fpga_manager *of_fpga_region_get_mgr(struct device_node *np) mgr_node = of_parse_phandle(np, "fpga-mgr", 0); if (mgr_node) { mgr = of_fpga_mgr_get(mgr_node); + of_node_put(mgr_node); of_node_put(np); return mgr; } @@ -120,10 +121,13 @@ static int of_fpga_region_get_bridges(struct fpga_region *region) parent_br = region_np->parent;

/* If overlay has a list of bridges, use it. */ - if (of_parse_phandle(info->overlay, "fpga-bridges", 0)) + br = of_parse_phandle(info->overlay, "fpga-bridges", 0); + if (br) { + of_node_put(br); np = info->overlay; - else + } else { np = region_np; + }

for (i = 0; ; i++) { br = of_parse_phandle(np, "fpga-bridges", i); @@ -131,12 +135,15 @@ static int of_fpga_region_get_bridges(struct fpga_region *region) break;

/* If parent bridge is in list, skip it. */ - if (br == parent_br) + if (br == parent_br) { + of_node_put(br); continue; + }

/* If node is a bridge, get it and add to list */ ret = of_fpga_bridge_get_to_list(br, info, &region->bridge_list); + of_node_put(br);

/* If any of the bridges are in use, give up */ if (ret == -EBUSY) {