diff options
| author | Alan Tull <atull@kernel.org> | 2018-09-12 09:43:23 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-30 08:49:55 -0700 |
| commit | 34bd283396af1f05c43fa64d51378d38affb1cf1 (patch) | |
| tree | 51ba04c6fbe0a5afbf97589873b738d49aa2b8d6 /drivers/fpga | |
| parent | 41e270f6898e7502be9fd6920ee0a108ca259d36 (diff) | |
| download | lwn-34bd283396af1f05c43fa64d51378d38affb1cf1.tar.gz lwn-34bd283396af1f05c43fa64d51378d38affb1cf1.zip | |
fpga: do not access region struct after fpga_region_unregister
A couple drivers were accessing the region struct after it had been
freed. Save off the pointer to the mgr before the region struct gets
freed.
Signed-off-by: Alan Tull <atull@kernel.org>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga')
| -rw-r--r-- | drivers/fpga/dfl-fme-region.c | 4 | ||||
| -rw-r--r-- | drivers/fpga/of-fpga-region.c | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/fpga/dfl-fme-region.c b/drivers/fpga/dfl-fme-region.c index 0b7e19c27c6d..51a5ac2293a7 100644 --- a/drivers/fpga/dfl-fme-region.c +++ b/drivers/fpga/dfl-fme-region.c @@ -14,6 +14,7 @@ */ #include <linux/module.h> +#include <linux/fpga/fpga-mgr.h> #include <linux/fpga/fpga-region.h> #include "dfl-fme-pr.h" @@ -66,9 +67,10 @@ eprobe_mgr_put: static int fme_region_remove(struct platform_device *pdev) { struct fpga_region *region = dev_get_drvdata(&pdev->dev); + struct fpga_manager *mgr = region->mgr; fpga_region_unregister(region); - fpga_mgr_put(region->mgr); + fpga_mgr_put(mgr); return 0; } diff --git a/drivers/fpga/of-fpga-region.c b/drivers/fpga/of-fpga-region.c index 35fabb8083fb..052a1342ab7e 100644 --- a/drivers/fpga/of-fpga-region.c +++ b/drivers/fpga/of-fpga-region.c @@ -437,9 +437,10 @@ eprobe_mgr_put: static int of_fpga_region_remove(struct platform_device *pdev) { struct fpga_region *region = platform_get_drvdata(pdev); + struct fpga_manager *mgr = region->mgr; fpga_region_unregister(region); - fpga_mgr_put(region->mgr); + fpga_mgr_put(mgr); return 0; } |