https://github.com/torvalds/linux
Revision 371a015344b6e270e7e3632107d9554ec6d27a6b authored by Yadi.hu on 18 September 2016, 10:52:31 UTC, committed by Wolfram Sang on 21 September 2016, 16:07:51 UTC
the eg20t driver call request_irq() function before the pch_base_address, base address of i2c controller's register, is assigned an effective value. there is one possible scenario that an interrupt which isn't inside eg20t arrives immediately after request_irq() is executed when i2c controller shares an interrupt number with others. since the interrupt handler pch_i2c_handler() has already active as shared action, it will be called and read its own register to determine if this interrupt is from itself. At that moment, since base address of i2c registers is not remapped in kernel space yet,so the INT handler will access an illegal address and then a error occurs. Signed-off-by: Yadi.hu <yadi.hu@windriver.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
1 parent 3be7988
Tip revision: 371a015344b6e270e7e3632107d9554ec6d27a6b authored by Yadi.hu on 18 September 2016, 10:52:31 UTC
i2c-eg20t: fix race between i2c init and interrupt enable
i2c-eg20t: fix race between i2c init and interrupt enable
Tip revision: 371a015
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| arch | ||
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| drivers | ||
| firmware | ||
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| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| net | ||
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| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitignore | -rw-r--r-- | 1.3 KB |
| .mailmap | -rw-r--r-- | 7.3 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 95.5 KB |
| Kbuild | -rw-r--r-- | 2.8 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 363.7 KB |
| Makefile | -rw-r--r-- | 56.8 KB |
| README | -rw-r--r-- | 18.1 KB |
| REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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