Rafael Mendonca 5e87d41221 uio: uio_dmem_genirq: Fix deadlock between irq config and handling ... [ Upstream commit 118b918018 ] This fixes a concurrency issue addressed in commit 34cb275283 ("UIO: Fix concurrency issue"): "In a SMP case there was a race condition issue between Uio_pdrv_genirq_irqcontrol() running on one CPU and irq handler on another CPU. Fix it by spin_locking shared resources access inside irq handler." The implementation of "uio_dmem_genirq" was based on "uio_pdrv_genirq" and it is used in a similar manner to the "uio_pdrv_genirq" driver with respect to interrupt configuration and handling. At the time "uio_dmem_genirq" was merged, both had the same implementation of the 'uio_info' handlers irqcontrol() and handler(), thus, both had the same concurrency issue mentioned by the above commit. However, the above patch was only applied to the "uio_pdrv_genirq" driver. Split out from commit 34cb275283 ("UIO: Fix concurrency issue"). Fixes: 0a0c3b5a24 ("Add new uio device for dynamic memory allocation") Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com> Link: https://lore.kernel.org/r/20220930224100.816175-3-rafaelmendsr@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-31 13:14:27 +01:00
..
Kconfig	uio: Remove leading spaces in Kconfig	2021-05-21 14:52:37 +02:00
Makefile	uio: uio_dfl: add userspace i/o driver for DFL bus	2021-03-28 14:58:18 +02:00
uio.c	Merge 5.10-rc4 into char-misc-next	2020-11-16 09:18:46 +01:00
uio_aec.c	uio: uio_aec: Use pci_iounmap instead of iounmap	2021-05-14 13:39:47 +02:00
uio_cif.c	uio: uio_cif: use devm_kzalloc() for uio_info object	2020-12-09 19:59:00 +01:00
uio_dfl.c	uio: uio_dfl: add userspace i/o driver for DFL bus	2021-03-28 14:58:18 +02:00
uio_dmem_genirq.c	uio: uio_dmem_genirq: Fix deadlock between irq config and handling	2022-12-31 13:14:27 +01:00
uio_fsl_elbc_gpcm.c	uio: uio_fsl_elbc_gpcm: use device-managed allocators	2020-12-09 19:59:00 +01:00
uio_hv_generic.c	uio_hv_generic: Fix another memory leak in error handling paths	2021-05-14 13:26:04 +02:00
uio_mf624.c	uio: uio_mf624: use devm_kzalloc() for uio_info object	2020-12-09 19:58:54 +01:00
uio_netx.c	uio: uio_netx: use devm_kzalloc() for or uio_info object	2020-12-09 19:58:54 +01:00
uio_pci_generic.c	Merge 50f09a3dd5 ("Merge tag 'char-misc-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc") into char-misc-next	2021-05-21 09:48:31 +02:00
uio_pdrv_genirq.c	Merge branch 'char-misc-linus' into 'char-misc-next'	2020-07-10 13:42:33 +02:00
uio_pruss.c	uio: pruss: use devm_clk_get() for clk init	2020-12-09 19:57:03 +01:00
uio_sercos3.c	uio: uio_sercos3: use device-managed functions for simple allocs	2020-12-09 19:58:54 +01:00