Rafael Mendonca 2fcb7c7d52 uio: uio_dmem_genirq: Fix deadlock between irq config and handling ... [ Upstream commit 118b918018175d9fcd8db667f905012e986cc2c9 ] 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>		2023-01-14 10:15:55 +01:00
..
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile
uio_aec.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333	2019-06-05 17:37:06 +02:00
uio_cif.c
uio_dmem_genirq.c	uio: uio_dmem_genirq: Fix deadlock between irq config and handling	2023-01-14 10:15:55 +01:00
uio_fsl_elbc_gpcm.c	uio: uio_fsl_elbc_gpcm: convert platform driver to use dev_groups	2019-08-02 12:56:51 +02:00
uio_hv_generic.c	uio_hv_generic: Fix a memory leak in error handling paths	2021-05-26 12:06:52 +02:00
uio_mf624.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61	2019-05-24 17:36:45 +02:00
uio_netx.c
uio_pci_generic.c
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_sercos3.c
uio.c	uio: Fix use-after-free in uio_unregister_device()	2020-11-09 18:54:30 +01:00