kernel.git/drivers/sh/intc/virq.c, branch master

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

drivers/sh/intc/virq.c: delete an error message for a failed memory allocation in add_virq_to_pirq()

2017-07-06T23:24:30Z

This issue was detected by using the Coccinelle software. Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf Link: http://lkml.kernel.org/r/54e30d61-5183-9911-cf35-1410fb78da5a@users.sourceforge.net Signed-off-by: Markus Elfring Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lib: radix-tree: check accounting of existing slot replacement users

2016-12-13T02:55:08Z

The bug in khugepaged fixed earlier in this series shows that radix tree slot replacement is fragile; and it will become more so when not only NULL<->!NULL transitions need to be caught but transitions from and to exceptional entries as well. We need checks. Re-implement radix_tree_replace_slot() on top of the sanity-checked __radix_tree_replace(). This requires existing callers to also pass the radix tree root, but it'll warn us when somebody replaces slots with contents that need proper accounting (transitions between NULL entries, real entries, exceptional entries) and where a replacement through the slot pointer would corrupt the radix tree node counts. Link: http://lkml.kernel.org/r/20161117193021.GB23430@cmpxchg.org Signed-off-by: Johannes Weiner Suggested-by: Jan Kara Reviewed-by: Jan Kara Cc: Kirill A. Shutemov Cc: Hugh Dickins Cc: Matthew Wilcox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

genirq: Remove irq argument from irq flow handlers

2015-09-16T13:47:51Z

Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner Cc: Julia Lawall Cc: Jiang Liu

sh/intc: Prepare irq flow handlers for irq argument removal

2015-07-29T08:08:09Z

The irq argument of most interrupt flow handlers is unused or merily used instead of a local variable. The handlers which need the irq argument can retrieve the irq number from the irq descriptor. Search and update was done with coccinelle and the invaluable help of Julia Lawall. Signed-off-by: Thomas Gleixner Cc: Jiang Liu Cc: Simon Horman Cc: Magnus Damm Cc: Julia Lawall Link: http://lkml.kernel.org/r/20150713151626.872605327@linutronix.de Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

sh/intc: Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc

2015-07-29T08:08:08Z

Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we already have a pointer to corresponding irq_desc. Also replace generic_handle_irq with generic_handle_irq_desc() to avoid looking up irq_desc again. Signed-off-by: Jiang Liu Cc: Simon Horman Cc: Magnus Damm Link: http://lkml.kernel.org/r/20150713151626.792845830@linutronix.de Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

sh/irq: Use irq accessor functions instead of open coded access

2015-07-29T08:08:07Z

This is a preparatory patch for refactoring the internals if irq_data. Signed-off-by: Jiang Liu Cc: Simon Horman Cc: Magnus Damm Link: http://lkml.kernel.org/r/20150713151626.616384365@linutronix.de Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar

sh/intc: Fix potential race in installing chained IRQ handler

2015-06-25T09:57:19Z

Fix a race where a pending interrupt could be received and the handler called before the handler's data has been setup, by moving the call to irq_set_chained_handler() after the function which sets up the handler data. Found by code inspection. Reported-by: Russell King Signed-off-by: Thomas Gleixner Cc: Simon Horman Cc: Magnus Damm Cc: linux-sh@vger.kernel.org

sh: intc: Allocate subgroup virq backing desc directly.

2012-06-13T03:08:36Z

This switches to using irq_alloc_desc() directly for subgroup IRQs. We still need to call activate_irq() on these in order to make them requestable, at least up until these get moved in to their own irq domain.. Signed-off-by: Paul Mundt

sh: intc: remove dependency on NR_IRQS

2012-01-26T02:37:48Z

SH intc has a compile time dependency on NR_IRQS. Make this dependency a local define so that shmobile (and ARM in general) can have run-time NR_IRQS setting. Signed-off-by: Rob Herring