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Atsushi Nemoto 1e9a51dca1 [PATCH] SPI: alternative fix for spi_busnum_to_master ... If a SPI master device exists, udev (udevtrigger) causes kernel crash, due to wrong kobj pointer in kobject_uevent_env(). This problem was not in 2.6.19. The backtrace (on MIPS) was: [<8024db6c>] kobject_uevent_env+0x54c/0x5e8 [<802a8264>] store_uevent+0x1c/0x3c (in drivers/class.c) [<801cb14c>] subsys_attr_store+0x2c/0x50 [<801cb80c>] flush_write_buffer+0x38/0x5c [<801cb900>] sysfs_write_file+0xd0/0x190 [<80181444>] vfs_write+0xc4/0x1a0 [<80181cdc>] sys_write+0x54/0xa0 [<8010dae4>] stack_done+0x20/0x3c flush_write_buffer() passes kobject of spi_master_class.subsys to subsys_addr_store(), then subsys_addr_store() passes a pointer to a struct subsystem to store_uevent() which expects a pointer to a struct class_device. The problem seems subsys_attr_store() called instead of class_device_attr_store(). This mismatch was caused by commit 3bd0f69435, which overrides kset of master class. This made spi_master_class.subsys.kset.ktype NULL so subsys_sysfs_ops is used instead of class_dev_sysfs_ops. The commit was to fix spi_busnum_to_master(). Here is a patch fixes this function in other way, just searching children list of class_device. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Kconfig	Fix misc Kconfig typos	18 years ago
Makefile	[PATCH] S3C24XX: hardware SPI driver	19 years ago
pxa2xx_spi.c	[PATCH] spi: fix error setting the spi mode in pxa2xx_spi.c	18 years ago
spi.c	[PATCH] SPI: alternative fix for spi_busnum_to_master	18 years ago
spi_bitbang.c	[PATCH] slab: remove SLAB_KERNEL	18 years ago
spi_butterfly.c	[PATCH] spi: check platform_device_register_simple() error	18 years ago
spi_mpc83xx.c	[PATCH] SPI: define null tx_buf to mean "shift out zeroes"	18 years ago
spi_s3c24xx.c	[PATCH] S3C24XX: fix passing spi chipselect to select routine	18 years ago
spi_s3c24xx_gpio.c	[PATCH] spi_s3c24xx_gpio: use right header	18 years ago