/// NULL check before some freeing functions is not needed. /// /// Based on checkpatch warning /// "kfree(NULL) is safe this check is probably not required" /// and kfreeaddr.cocci by Julia Lawall. /// // Copyright: (C) 2014 Fabian Frederick. GPLv2. // Comments: - // Options: --no-includes --include-headers virtual patch virtual org virtual report virtual context @r2 depends on patch@ expression E; @@ - if (E != NULL) ( kfree(E); | kzfree(E); | debugfs_remove(E); | debugfs_remove_recursive(E); | usb_free_urb(E); | kmem_cache_destroy(E); | mempool_destroy(E); | dma_pool_destroy(E); ) @r depends on context || report || org @ expression E; position p; @@ * if (E != NULL) * \(kfree@p\|kzfree@p\|debugfs_remove@p\|debugfs_remove_recursive@p\| * usb_free_urb@p\|kmem_cache_destroy@p\|mempool_destroy@p\| * dma_pool_destroy@p\)(E); @script:python depends on org@ p << r.p; @@ cocci.print_main("NULL check before that freeing function is not needed", p) @script:python depends on report@ p << r.p; @@ msg = "WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values." coccilib.report.print_report(p[0], msg) back net-next plumbingsTobias Klauser
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authorAlexander Stein <alexander.stein@systec-electronic.com>2017-01-30 12:35:28 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-01-30 15:53:57 +0100
commitcdca06e4e85974d8a3503ab15709dbbaf90d3dd1 (patch)
tree268b0c01070a957006db97c88dccb5fb061440ff /fs/xfs/libxfs/xfs_refcount_btree.h
parent1b89970d81bbd52720fc64a3fe9572ee33588363 (diff)
pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler
According to VLI64 Intel Atom E3800 Specification Update (#329901) concurrent read accesses may result in returning 0xffffffff and write accesses may be dropped silently. To workaround all accesses must be protected by locks. Cc: stable@vger.kernel.org Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_refcount_btree.h')