The patch titled uml: fix spurious IRQ testing has been removed from the -mm tree. Its filename was uml-fix-spurious-irq-testing.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ Subject: uml: fix spurious IRQ testing From: Jeff Dike <jdike@xxxxxxxxxxx> The spurious IRQ testing in request_irq is mishandled in um_request_irq, which sets the incoming file descriptors non-blocking only after request_irq succeeds. This results in the spurious irq calling read on a blocking descriptor, and a hang. Fixed by reversing the O_NONBLOCK setting and the request_irq call. Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/um/kernel/irq.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff -puN arch/um/kernel/irq.c~uml-fix-spurious-irq-testing arch/um/kernel/irq.c --- a/arch/um/kernel/irq.c~uml-fix-spurious-irq-testing +++ a/arch/um/kernel/irq.c @@ -347,14 +347,15 @@ int um_request_irq(unsigned int irq, int { int err; - err = request_irq(irq, handler, irqflags, devname, dev_id); - if (err) - return err; - - if (fd != -1) + if (fd != -1) { err = activate_fd(irq, fd, type, dev_id); - return err; + if (err) + return err; + } + + return request_irq(irq, handler, irqflags, devname, dev_id); } + EXPORT_SYMBOL(um_request_irq); EXPORT_SYMBOL(reactivate_fd); _ Patches currently in -mm which might be from jdike@xxxxxxxxxxx are origin.patch git-kvm.patch uml-implement-get_wchan.patch uml-implement-get_wchan-fix.patch uml-get-rid-of-asmlinkage.patch uml-get-rid-of-asmlinkage-checkpatch-fixes.patch uml-document-new-ubd-flag.patch uml-further-bugsc-tidying.patch uml-further-bugsc-tidying-checkpatch-fixes.patch uml-smp-needs-to-depend-on-broken-for-now.patch uml-console-driver-cleanups.patch uml-clonec-tidying.patch uml-borrow-consth-techniques.patch uml-delete-some-unused-headers.patch uml-allow-lflags-on-command-line.patch uml-tidy-kern_utilh.patch uml-tidy-pgtableh.patch uml-reconst-a-parameter.patch arch-um-remove-duplicate-includes.patch iget-stop-hostfs-from-using-iget-and-read_inode.patch iget-stop-hostfs-from-using-iget-and-read_inode-checkpatch-fixes.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html