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| author | Tobias Klauser <tklauser@distanz.ch> | 2017-04-24 16:34:21 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-26 11:38:56 +0200 |
| commit | e73bbf64907c88d3bb811756fc25548131524035 (patch) | |
| tree | 2780e7b12e77a570dde0cadc346a266873b12189 /drivers/fpga | |
| parent | d721f9bbe6a7d9543f560053f8be5237e7db18e9 (diff) | |
| download | linux-e73bbf64907c88d3bb811756fc25548131524035.tar.gz linux-e73bbf64907c88d3bb811756fc25548131524035.tar.bz2 linux-e73bbf64907c88d3bb811756fc25548131524035.zip | |
fpga: region: release FPGA region reference in error path
If fpga_region_get_manager() fails in fpga_region_program_fpga(), a
reference to the fpga_manager instance previously acquired through
fpga_region_get() is retained. Make sure to properly release it in the
error case by using a separate jump label which will call
fpga_region_put() in before returning.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga')
| -rw-r--r-- | drivers/fpga/fpga-region.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index ae4c61aada99..3b6b2f4182a1 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -245,7 +245,8 @@ static int fpga_region_program_fpga(struct fpga_region *region, mgr = fpga_region_get_manager(region); if (IS_ERR(mgr)) { pr_err("failed to get fpga region manager\n"); - return PTR_ERR(mgr); + ret = PTR_ERR(mgr); + goto err_put_region; } ret = fpga_region_get_bridges(region, overlay); @@ -281,6 +282,7 @@ err_put_br: fpga_bridges_put(®ion->bridge_list); err_put_mgr: fpga_mgr_put(mgr); +err_put_region: fpga_region_put(region); return ret; |